to be fair, json mode is only supported on a small amount of models

T

ToriannaOP•2/6/25, 2:16 PM

since it requires modifying how the model responds

TTorianna to be fair, json mode is only supported on a small amount of models

I

Isaac McFadyen•2/6/25, 2:17 PM

Kind of? Like, the models themselves have "JSON mode" but it's not actually that hard to force it to be JSON, it just needs some forced logits but theoretically any backend that does that will work with any model.

I

Isaac McFadyen•2/6/25, 2:17 PM

I just don't think CF's backend has that setting or if it does it's not enabled.

T

ToriannaOP•2/6/25, 2:18 PM

true

T

ToriannaOP•2/6/25, 2:18 PM

but also looking at the models CF has, most dont allow modifying the logit bias

M

Muhammadreza Haghiri•2/6/25, 2:24 PM

Hi everyone.
I am using CF AI workers a lot and recently, my startup (basically me and my team) relesead this new 8B multilingual model:

https://huggingface.co/mann-e/Hormoz-8B

I just want to know how can we use it through AI workers?

mann-e/Hormoz-8B · Hugging Face

MMuhammadreza Haghiri Hi everyone. I am using CF AI workers a lot and recently, my startup (basically...

I

Isaac McFadyen•2/6/25, 2:32 PM

?workers-ai-models

S

SuperHelpflare•2/6/25, 2:32 PM

Workers AI currently only supports popular open-source models provided by the Cloudflare team, as well as your own LoRAs that can be applied on top of the Cloudflare-provided models. You cannot currently upload your own models or use a model from HuggingFace. See the documentation for the list of Cloudflare-provided models: https://developers.cloudflare.com/workers-ai/models/

M

Mitya•2/6/25, 4:29 PM

Update on the structured/JSON output discussion above, I've had great results with a mixture of LangChain, native JSON schemas and Mistral (when using Mistral directly via their own API). Here's a truncated example:

import { ChatMistralAI } from "@langchain/mistralai"
router.get('/mistral', async req => {
  const model = new ChatMistralAI({
    model: "mistral-large-latest",
    temperature: 0,
    apiKey: <MISTRAL-API-KEY>
  });
  const structuredLlm = model.withStructuredOutput(<JSON-SCHEMA-HERE>);
  return await structuredLlm.invoke(<YOUR-PROMPT-HERE>);
})

import { ChatMistralAI } from "@langchain/mistralai"
router.get('/mistral', async req => {
  const model = new ChatMistralAI({
    model: "mistral-large-latest",
    temperature: 0,
    apiKey: <MISTRAL-API-KEY>
  });
  const structuredLlm = model.withStructuredOutput(<JSON-SCHEMA-HERE>);
  return await structuredLlm.invoke(<YOUR-PROMPT-HERE>);
})

import { ChatMistralAI } from "@langchain/mistralai"
router.get('/mistral', async req => {
  const model = new ChatMistralAI({
    model: "mistral-large-latest",
    temperature: 0,
    apiKey: <MISTRAL-API-KEY>
  });
  const structuredLlm = model.withStructuredOutput(<JSON-SCHEMA-HERE>);
  return await structuredLlm.invoke(<YOUR-PROMPT-HERE>);
})

import { ChatMistralAI } from "@langchain/mistralai"
router.get('/mistral', async req => {
  const model = new ChatMistralAI({
    model: "mistral-large-latest",
    temperature: 0,
    apiKey: <MISTRAL-API-KEY>
  });
  const structuredLlm = model.withStructuredOutput(<JSON-SCHEMA-HERE>);
  return await structuredLlm.invoke(<YOUR-PROMPT-HERE>);
})

Returns JSON nearly every time and there's support for built-in retries where it fails.

C

crazyjack12•2/6/25, 7:11 PM

There was a beta to be able to use a hugging face model, but not sure what’s the state of that project @Muhammadreza Haghiri

D

dandoen•2/7/25, 11:44 AM

maybe this channel is more appropriate than vectorize, but i'm wondering if there are any short term plans to make the multi-lingual text embedding model BAAI/bge-m3 available? current BGE ones are EN only
vectorize

G

GaryLi•2/7/25, 4:11 PM

asking if workers ai can get full-sized deepseek r1 model

.

.triloksingh•2/7/25, 4:48 PM

#workers-aiI have a paid plan, but I want to make expectations for my admin panel. my website url is example.com/admin

P

prisum 🎄•2/8/25, 1:01 AM

so if I upgrade to the $5 a month plan I get infinite ai requests?

Pprisum 🎄so if I upgrade to the $5 a month plan I get infinite ai requests?

G

GaryLi•2/8/25, 10:42 AM

go to docs, theres s pricing list for ai

P

Puliczek•2/8/25, 12:36 PM

what type of MCP is used by worker-mcp? command or SSE?

N

nukely•2/8/25, 5:37 PM

any tutorial on how to use Gemini Multimodal Live API with nextjs and a websocket server

GGaryLi go to docs, theres s pricing list for ai

P

prisum 🎄•2/8/25, 6:49 PM

Yeah I did but on the direct worker ai page it says 30,000 requests monthly but on the pricing document it says unlimited

Pprisum 🎄Yeah I did but on the direct worker ai page it says 30,000 requests monthly but ...

N

Nutjob 홍•2/8/25, 10:18 PM

Which page are you looking at?

https://developers.cloudflare.com/workers-ai/platform/pricing/

10,000 free tokens a day and then pricing based on model size and blended input/output tokens.

Cloudflare Docs

Pricing · Cloudflare Workers AI docs

Workers AI is included in both the Free and Paid Workers plans and is priced based on model task, model size, and units.

Eelement14 I would also like to know if there is any REST API Endpoint (or via wrangler com...

U

user•2/9/25, 7:59 AM

Anything on this?

M

Muhammadreza Haghiri•2/9/25, 3:57 PM

Will FLUX-Dev be added to the models as well?

S

shoo•2/9/25, 5:09 PM

InferenceUpstreamError: undefined: undefined

anyone who knows workaorund to this?

if I use --remote, it doesn't connect to any other worker in local as workers binding

B

Bob•2/9/25, 7:23 PM

Hello. I have a question.
bge-large-en-v1.5 <- for this model, how many text items I can send in 1 request? I can't seem to find any info on it.

BBumblebeeSquare hi guys , anyone know why https://github.com/cloudflare/workers-ai-provider does...

B

BumblebeeSquare•2/10/25, 9:18 PM

L

leisure•2/11/25, 6:19 AM

Hi, I have a question. When I use it, I find that Daily Usage Limits will not reset at zero normally. Is this a special problem?

BBumblebeeSquare Empty message

R

Raylight•2/11/25, 11:27 AM

Yes. It's not implemented in the package. I created a quick fix (https://github.com/Raylight-PWL/workers-ai-provider/pull/1) but haven't used/tested the package. In any case, you can look at the diff if you want to patch it yourself.

GGaryLi asking if workers ai can get full-sized deepseek r1 model

G

GaryLi•2/11/25, 3:34 PM

idk why they dont put this on

R

rob•2/11/25, 3:48 PM

i dont think they can handle the size

R

rob•2/11/25, 3:48 PM

yet

M

Marco Aleixo•2/11/25, 7:51 PM

do you plan to add more embedding models?
only having a single not multi lingual model available for embedding is kind of a big blocker to use workers ai

B

beingmudit [WePlayDOS]•2/12/25, 9:08 PM

Hi CF team, had a doubt about function calling and the supported model. I can see that only one model is supported but in the documentation of this llama model - https://developers.cloudflare.com/workers-ai/models/llama-3.2-11b-vision-instruct/

I can see in the input/output params, we can pass tools. Is there a documentation mismatch?

Cloudflare Docs

llama-3.2-11b-vision-instruct · Cloudflare Workers AI docs

The Llama 3.2-Vision instruction-tuned models are optimized for visual recognition, image reasoning, captioning, and answering general questions about an image.

B

beingmudit [WePlayDOS]•2/12/25, 9:48 PM

One more q - I am trying out the hermes model and sending this payload as per this example - https://developers.cloudflare.com/workers-ai/function-calling/traditional/

I am using the gateway to make the call - https://gateway.ai.cloudflare.com/v1/{ACC_ID}/{gateway}/workers-ai/v1/chat/completions

const response = await env.AI.run("@hf/nousresearch/hermes-2-pro-mistral-7b", {
  messages: [
    {
      role: "user",
      content: "what is the weather in london?",
    },
  ],
  tools: [
    {
      name: "getWeather",
      description: "Return the weather for a latitude and longitude",
      parameters: {
        type: "object",
        properties: {
          latitude: {
            type: "string",
            description: "The latitude for the given location",
          },
          longitude: {
            type: "string",
            description: "The longitude for the given location",
          },
        },
        required: ["latitude", "longitude"],
      },
    },
  ],
});

return new Response(JSON.stringify(response.tool_calls));

const response = await env.AI.run("@hf/nousresearch/hermes-2-pro-mistral-7b", {
  messages: [
    {
      role: "user",
      content: "what is the weather in london?",
    },
  ],
  tools: [
    {
      name: "getWeather",
      description: "Return the weather for a latitude and longitude",
      parameters: {
        type: "object",
        properties: {
          latitude: {
            type: "string",
            description: "The latitude for the given location",
          },
          longitude: {
            type: "string",
            description: "The longitude for the given location",
          },
        },
        required: ["latitude", "longitude"],
      },
    },
  ],
});

return new Response(JSON.stringify(response.tool_calls));

const response = await env.AI.run("@hf/nousresearch/hermes-2-pro-mistral-7b", {
  messages: [
    {
      role: "user",
      content: "what is the weather in london?",
    },
  ],
  tools: [
    {
      name: "getWeather",
      description: "Return the weather for a latitude and longitude",
      parameters: {
        type: "object",
        properties: {
          latitude: {
            type: "string",
            description: "The latitude for the given location",
          },
          longitude: {
            type: "string",
            description: "The longitude for the given location",
          },
        },
        required: ["latitude", "longitude"],
      },
    },
  ],
});

return new Response(JSON.stringify(response.tool_calls));

const response = await env.AI.run("@hf/nousresearch/hermes-2-pro-mistral-7b", {
  messages: [
    {
      role: "user",
      content: "what is the weather in london?",
    },
  ],
  tools: [
    {
      name: "getWeather",
      description: "Return the weather for a latitude and longitude",
      parameters: {
        type: "object",
        properties: {
          latitude: {
            type: "string",
            description: "The latitude for the given location",
          },
          longitude: {
            type: "string",
            description: "The longitude for the given location",
          },
        },
        required: ["latitude", "longitude"],
      },
    },
  ],
});

return new Response(JSON.stringify(response.tool_calls));

I am getting back this

{
  "id": "id-1739396566250",
  "object": "chat.completion",
  "created": 1739396566,
  "model": "@hf/nousresearch/hermes-2-pro-mistral-7b",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": null
      },
      "logprobs": null,
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "input": 15,
    "output": 0,
    "total": 15
  }
}

{
  "id": "id-1739396566250",
  "object": "chat.completion",
  "created": 1739396566,
  "model": "@hf/nousresearch/hermes-2-pro-mistral-7b",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": null
      },
      "logprobs": null,
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "input": 15,
    "output": 0,
    "total": 15
  }
}

{
  "id": "id-1739396566250",
  "object": "chat.completion",
  "created": 1739396566,
  "model": "@hf/nousresearch/hermes-2-pro-mistral-7b",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": null
      },
      "logprobs": null,
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "input": 15,
    "output": 0,
    "total": 15
  }
}

{
  "id": "id-1739396566250",
  "object": "chat.completion",
  "created": 1739396566,
  "model": "@hf/nousresearch/hermes-2-pro-mistral-7b",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": null
      },
      "logprobs": null,
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "input": 15,
    "output": 0,
    "total": 15
  }
}

Seems like function calling is not working. Can anyone help?

Cloudflare Docs

Traditional function calling · Cloudflare Workers AI docs

This page shows how you can do traditional function calling, as defined by industry standards. Workers AI also offers embedded function calling, which is drastically easier than traditional function calling.

J

Jason Barry•2/12/25, 9:52 PM

yes, my function calling isn't working either, using

@cf/meta/llama-3.1-8b-instruct-fast

@cf/meta/llama-3.1-8b-instruct-fast

. I'm seeing a lot of

Error: oneOf at '.' not met: required properties at '.name' is 'type,description', required properties at '.tools.0.function.parameters' is 'type,properties'

Error: oneOf at '.' not met: required properties at '.name' is 'type,description', required properties at '.tools.0.function.parameters' is 'type,properties'

Error: oneOf at '.' not met: required properties at '.name' is 'type,description', required properties at '.tools.0.function.parameters' is 'type,properties'

Error: oneOf at '.' not met: required properties at '.name' is 'type,description', required properties at '.tools.0.function.parameters' is 'type,properties'

errors in my AI Gateway logs. I'm comparing to requests that I sent last friday -- the request schema I'm using is the same, but something is causing it to error out

J

Jason Barry•2/12/25, 9:55 PM

internalCode 5006, fwiw

J

Jason Barry•2/12/25, 9:57 PM

looking in my logs I see the error starting last night, here's an example payload that used to work that is currently failing

{
  "prompt": "Find the computer specs",
  "temperature": 0,
  "messages": [
    {
      "role": "user",
      "content": "..."
    }
  ],
  "tools": [
    {
      "name": "dataExtractor",
      "description": "Extract data that conforms to the provided schema",
      "parameters": {
        "type": "object",
        "properties": {
          "model": {
            "type": "string"
          },
          "cpu": {
            "type": "string"
          },
          "ram": {
            "type": "string"
          },
          "hard_drive": {
            "type": "string"
          },
          "year": {
            "type": "integer"
          },
          "screen_size": {
            "type": "string"
          },
          "dollars": {
            "type": "integer"
          },
          "location": {
            "type": "string"
          },
          "condition": {
            "type": "string",
            "enum": [
              "new",
              "like new",
              "excellent",
              "good",
              "fair",
              "salvage"
            ]
          }
        },
        "required": [
          "model",
          "cpu",
          "ram",
          "hard_drive",
          "year",
          "screen_size",
          "dollars",
          "location",
          "condition"
        ],
        "additionalProperties": false
      }
    }
  ]
}

{
  "prompt": "Find the computer specs",
  "temperature": 0,
  "messages": [
    {
      "role": "user",
      "content": "..."
    }
  ],
  "tools": [
    {
      "name": "dataExtractor",
      "description": "Extract data that conforms to the provided schema",
      "parameters": {
        "type": "object",
        "properties": {
          "model": {
            "type": "string"
          },
          "cpu": {
            "type": "string"
          },
          "ram": {
            "type": "string"
          },
          "hard_drive": {
            "type": "string"
          },
          "year": {
            "type": "integer"
          },
          "screen_size": {
            "type": "string"
          },
          "dollars": {
            "type": "integer"
          },
          "location": {
            "type": "string"
          },
          "condition": {
            "type": "string",
            "enum": [
              "new",
              "like new",
              "excellent",
              "good",
              "fair",
              "salvage"
            ]
          }
        },
        "required": [
          "model",
          "cpu",
          "ram",
          "hard_drive",
          "year",
          "screen_size",
          "dollars",
          "location",
          "condition"
        ],
        "additionalProperties": false
      }
    }
  ]
}

{
  "prompt": "Find the computer specs",
  "temperature": 0,
  "messages": [
    {
      "role": "user",
      "content": "..."
    }
  ],
  "tools": [
    {
      "name": "dataExtractor",
      "description": "Extract data that conforms to the provided schema",
      "parameters": {
        "type": "object",
        "properties": {
          "model": {
            "type": "string"
          },
          "cpu": {
            "type": "string"
          },
          "ram": {
            "type": "string"
          },
          "hard_drive": {
            "type": "string"
          },
          "year": {
            "type": "integer"
          },
          "screen_size": {
            "type": "string"
          },
          "dollars": {
            "type": "integer"
          },
          "location": {
            "type": "string"
          },
          "condition": {
            "type": "string",
            "enum": [
              "new",
              "like new",
              "excellent",
              "good",
              "fair",
              "salvage"
            ]
          }
        },
        "required": [
          "model",
          "cpu",
          "ram",
          "hard_drive",
          "year",
          "screen_size",
          "dollars",
          "location",
          "condition"
        ],
        "additionalProperties": false
      }
    }
  ]
}

{
  "prompt": "Find the computer specs",
  "temperature": 0,
  "messages": [
    {
      "role": "user",
      "content": "..."
    }
  ],
  "tools": [
    {
      "name": "dataExtractor",
      "description": "Extract data that conforms to the provided schema",
      "parameters": {
        "type": "object",
        "properties": {
          "model": {
            "type": "string"
          },
          "cpu": {
            "type": "string"
          },
          "ram": {
            "type": "string"
          },
          "hard_drive": {
            "type": "string"
          },
          "year": {
            "type": "integer"
          },
          "screen_size": {
            "type": "string"
          },
          "dollars": {
            "type": "integer"
          },
          "location": {
            "type": "string"
          },
          "condition": {
            "type": "string",
            "enum": [
              "new",
              "like new",
              "excellent",
              "good",
              "fair",
              "salvage"
            ]
          }
        },
        "required": [
          "model",
          "cpu",
          "ram",
          "hard_drive",
          "year",
          "screen_size",
          "dollars",
          "location",
          "condition"
        ],
        "additionalProperties": false
      }
    }
  ]
}

B

beingmudit [WePlayDOS]•2/13/25, 5:41 AM

CF team, can anyone help with yhe above?

JJason Barry looking in my logs I see the error starting last night, here's an example payloa...

B

blindChicken•2/13/25, 8:58 PM

I think the error may be caused because you did not provide a description for your properties.
You have:

"properties": {
  "model": {
    "type": "string"
  },
  ...

"properties": {
  "model": {
    "type": "string"
  },
  ...

"properties": {
  "model": {
    "type": "string"
  },
  ...

"properties": {
  "model": {
    "type": "string"
  },
  ...

This should be:

"properties": {
  "model": {
    "type": "string",
    "description": "name of the model to be used" //or whatever the appropriate description is
  },
  ...

"properties": {
  "model": {
    "type": "string",
    "description": "name of the model to be used" //or whatever the appropriate description is
  },
  ...

"properties": {
  "model": {
    "type": "string",
    "description": "name of the model to be used" //or whatever the appropriate description is
  },
  ...

"properties": {
  "model": {
    "type": "string",
    "description": "name of the model to be used" //or whatever the appropriate description is
  },
  ...

And this should be repeated for each of your props.

L

Lila Rest•2/13/25, 9:26 PM

Hey! our AI requests are failing with the following rate limit error, while the volume is relatively low ($20 of consumption). That heavily impacts our services

 {       message: 'AiError: AiError: Capacity temporarily exceeded, please try again.',       code: 3040     }

 {       message: 'AiError: AiError: Capacity temporarily exceeded, please try again.',       code: 3040     }

LLila Rest Hey! our AI requests are failing with the following rate limit error, while the ...

B

blindChicken•2/13/25, 11:28 PM

I was getting the same error, but according to my dashboard I was no where close to the my limit. I think the error is not specific to any one account but may be that the network is overloaded. (I'm speculating) I waited a few minutes and I was able to continue normally.

TTanis Wolfbane Any one manage to get flux to work? When I run the exactly example in the docume...

V

vehu•2/14/25, 1:57 AM

hey, have you found any solution to the problem? (sorry for the ping)

BblindChicken I think the error may be caused because you did not provide a description for yo...

J

Jason Barry•2/14/25, 2:53 AM

do you know if this requirement changed recently? it seems that last week, there wasn't enforcement of the

description

description

key

JJason Barry do you know if this requirement changed recently? it seems that last week, there...

B

blindChicken•2/14/25, 3:29 AM

IDK about enforcement, but it is needed so that the model can assign the proper value to the proper properties. Since all this AI stuff is probabilistic it is possible that it can work without the description, and then just as easily not work.

Bbeingmudit [WePlayDOS]CF team, can anyone help with yhe above?

�

😈 Donkey 💫•2/14/25, 5:00 AM

only 1 ancient model on CF support Func Calling, even when your payload works, it would return something poor-quality and irrelevant, that's my experience

LLila Rest Hey! our AI requests are failing with the following rate limit error, while the ...

�

😈 Donkey 💫•2/14/25, 5:00 AM

since CF list their inference on OR, I encounter the same problem

BblindChicken I was getting the same error, but according to my dashboard I was no where close...

L

Lila Rest•2/14/25, 9:23 AM

Same it finally solved by itself after a few hours. That sucks :/

to be fair, json mode is only supported on a small amount of models

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