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Aug 5, 2025
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changelog and model docs #24184

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changelog and model docs
mchenco Aug 5, 2025
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Update 2025-08-05-openai-open-models.mdx
mchenco Aug 5, 2025
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mchenco Aug 5, 2025
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4 changes: 3 additions & 1 deletion .gitignore
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Expand Up @@ -29,4 +29,6 @@ pnpm-debug.log*
/assets/secrets
/worker/functions/

.idea
.idea

public/*
45 changes: 45 additions & 0 deletions src/content/changelog/workers-ai/2025-08-05-openai-open-models.mdx
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---
title: OpenAI open models now available on Workers AI
description: Partnering with OpenAI as a Day 0 launch partner to bring you 2 new open models on Workers AI
products:
- agents
- workers-ai
date: 2025-08-05
---

We're thrilled to be a Day 0 partner with [OpenAI](http://openai.com/index/introducing-gpt-oss) to bring their [latest open models](https://openai.com/index/gpt-oss-model-card/) to Workers AI, including support for Responses API, Code Interpreter, and Web Search (coming soon).

Get started with the new models at `@cf/openai/gpt-oss-120b` and `@cf/openai/gpt-oss-20b`.
Check out the [blog](https://blog.cloudflare.com/openai-gpt-oss-on-workers-ai) for more details about the new models, and the [`gpt-oss-120b`](/workers-ai/models/gpt-oss-120b) and [`gpt-oss-20b`](/workers-ai/models/gpt-oss-20b) model pages for more information about pricing and context windows.

## Responses API
If you call the model through:
- Workers Binding, it will accept/return Responses API – `env.AI.run(“@cf/openai/gpt-oss-120b”)`
- REST API on `/run` endpoint, it will accept/return Responses API – `https://api.cloudflare.com/client/v4/accounts/<account_id>/ai/run/@cf/openai/gpt-oss-120b`
- REST API on new `/responses` endpoint, it will accept/return Responses API – `https://api.cloudflare.com/client/v4/accounts/<account_id>/ai/v1/responses`
- REST API for OpenAI Compatible endpoint, it will return Chat Completions (coming soon) – `https://api.cloudflare.com/client/v4/accounts/<account_id>/ai/v1/chat/completions`


```
curl https://api.cloudflare.com/client/v4/accounts/<account_id>/ai/v1/responses \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $CLOUDFLARE_API_KEY" \
-d '{
"model": "@cf/openai/gpt-oss-120b",
"reasoning": {"effort": "medium"},
"input": [
{
"role": "user",
"content": "What are the benefits of open-source models?"
}
]
}'


```

## Code Interpreter
The model is natively trained to support stateful code execution, and we've implemented support for this feature using our [Sandbox SDK](https://github.com/cloudflare/sandbox-sdk) and [Containers](https://blog.cloudflare.com/containers-are-available-in-public-beta-for-simple-global-and-programmable/). Cloudflare's Developer Platform is uniquely positioned to support this feature, so we're very excited to bring our products together to support this new use case.

## Web Search (coming soon)
We are working to implement Web Search for the model, where users can bring their own Exa API Key so the model can browse the Internet.
99 changes: 99 additions & 0 deletions src/content/workers-ai-models/gpt-oss-120b.json
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{
"id": "f9f2250b-1048-4a52-9910-d0bf976616a1",
"source": 1,
"name": "@cf/openai/gpt-oss-120b",
"description": "OpenAI’s open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases – gpt-oss-120b is for production, general purpose, high reasoning use-cases.",
"task": {
"id": "c329a1f9-323d-4e91-b2aa-582dd4188d34",
"name": "Text Generation",
"description": "Family of generative text models, such as large language models (LLM), that can be adapted for a variety of natural language tasks."
},
"created_at": "2025-08-05 10:27:29.131",
"tags": [],
"properties": [
{
"property_id": "context_window",
"value": "128000"
},
{
"property_id": "price",
"value": [
{
"unit": "per M input tokens",
"price": 0.35,
"currency": "USD"
},
{
"unit": "per M output tokens",
"price": 0.75,
"currency": "USD"
}
]
}
],
"schema": {
"input": {
"type": "object",
"title": "GPT_OSS_Responses",
"properties": {
"input": {
"oneOf": [
{
"type": "string"
},
{
"type": "array",
"items": {
"type": "object",
"properties": {
"role": {
"type": "string",
"description": "The role of the message input. One of user, assistant, system, or developer.",
"enum": [
"user",
"assistant",
"system",
"developer"
]
},
"content": {
"oneOf": [
{
"type": "string",
"description": "The content of the message as a string."
},
{
"type": "array",
"description": "Refer to OpenAI Responses API docs to learn more about supported content types.",
"items": {
"type": "object",
"properties": {}
}
}
]
}
}
}
}
]
}
},
"required": [
"input"
]
},
"output": {
"oneOf": [
{
"type": "object",
"contentType": "application/json"
},
{
"type": "string",
"contentType": "text/event-stream",
"format": "binary"
}
]
}
}
}
99 changes: 99 additions & 0 deletions src/content/workers-ai-models/gpt-oss-20b.json
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{
"id": "188a4e1e-253e-46d0-9616-0bf8c149763f",
"source": 1,
"name": "@cf/openai/gpt-oss-20b",
"description": "OpenAI’s open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases – gpt-oss-20b is for lower latency, and local or specialized use-cases.",
"task": {
"id": "c329a1f9-323d-4e91-b2aa-582dd4188d34",
"name": "Text Generation",
"description": "Family of generative text models, such as large language models (LLM), that can be adapted for a variety of natural language tasks."
},
"created_at": "2025-08-05 10:49:53.265",
"tags": [],
"properties": [
{
"property_id": "context_window",
"value": "128000"
},
{
"property_id": "price",
"value": [
{
"unit": "per M input tokens",
"price": 0.2,
"currency": "USD"
},
{
"unit": "per M output tokens",
"price": 0.3,
"currency": "USD"
}
]
}
],
"schema": {
"input": {
"type": "object",
"title": "GPT_OSS_Responses",
"properties": {
"input": {
"oneOf": [
{
"type": "string"
},
{
"type": "array",
"items": {
"type": "object",
"properties": {
"role": {
"type": "string",
"description": "The role of the message input. One of user, assistant, system, or developer.",
"enum": [
"user",
"assistant",
"system",
"developer"
]
},
"content": {
"oneOf": [
{
"type": "string",
"description": "The content of the message as a string."
},
{
"type": "array",
"description": "Refer to OpenAI Responses API docs to learn more about supported content types.",
"items": {
"type": "object",
"properties": {}
}
}
]
}
}
}
}
]
}
},
"required": [
"input"
]
},
"output": {
"oneOf": [
{
"type": "object",
"contentType": "application/json"
},
{
"type": "string",
"contentType": "text/event-stream",
"format": "binary"
}
]
}
}
}
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