GPT-5.5·续

GPT-5.5·续

</details>

<summary>Streaming Response — Enable streaming for real-time output</summary>

const response = await env.AI.run(
  'openai/gpt-5.5',
  {
    messages: [{ content: 'Explain the concept of recursion with a simple example.', role: 'user' }],
    stream: true,
    stream_options: { include_usage: true },
  },
)
console.log(response)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/chat/completions \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "openai/gpt-5.5",
  "messages": [
    {
      "content": "Explain the concept of recursion with a simple example.",
      "role": "user"
    }
  ],
  "stream": true,
  "stream_options": {
    "include_usage": true
  }
}'

Recursion is when a function solves a problem by calling itself with a smaller or simpler version of the same problem.

A recursion usually has two parts:

1. **Base case**: when to stop calling itself.
2. **Recursive case**: the part where the function calls itself.

Example: counting down from a number.

```python
def countdown(n):
    if n == 0:          # base case
        print("Done!")
    else:
        print(n)
        countdown(n - 1) # recursive case

countdown(3)
```

Output:

```text
3
2
1
Done!
```

Here is what happens:

- `countdown(3)` prints `3`, then calls `countdown(2)`
- `countdown(2)` prints `2`, then calls `countdown(1)`
- `countdown(1)` prints `1`, then calls `countdown(0)`
- `countdown(0)` reaches the base case and stops

So, recursion is like breaking a problem into smaller versions of itself until reaching a stopping point.

[
  {
    "choices": [
      {
        "delta": {
          "content": "",
          "refusal": null,
          "role": "assistant"
        },
        "finish_reason": null,
        "index": 0
      }
    ],
    "created": 1777055295,
    "id": "chatcmpl-DYFY7TPENOUYNWL4XUE07mP4N37Jp",
    "model": "gpt-5.5-2026-04-23",
    "obfuscation": "5EGG4gGR",
    "object": "chat.completion.chunk",
    "service_tier": "default",
    "system_fingerprint": null,
    "usage": null
  },
  {
    "choices": [
      {
        "delta": {
          "content": "Rec"
        },
        "finish_reason": null,
        "index": 0
      }
    ],
    "created": 1777055295,
    "id": "chatcmpl-DYFY7TPENOUYNWL4XUE07mP4N37Jp",
    "model": "gpt-5.5-2026-04-23",
    "obfuscation": "PC9MLZ9",
    "object": "chat.completion.chunk",
    "service_tier": "default",
    "system_fingerprint": null,
    "usage": null
  },
  "... 225 more chunks omitted ...",
  {
    "choices": [],
    "created": 1777055295,
    "id": "chatcmpl-DYFY7TPENOUYNWL4XUE07mP4N37Jp",
    "model": "gpt-5.5-2026-04-23",
    "obfuscation": "0lMavgk",
    "object": "chat.completion.chunk",
    "service_tier": "default",
    "system_fingerprint": null,
    "usage": {
      "completion_tokens": 228,
      "completion_tokens_details": {
        "accepted_prediction_tokens": 0,
        "audio_tokens": 0,
        "reasoning_tokens": 0,
        "rejected_prediction_tokens": 0
      },
      "prompt_tokens": 16,
      "prompt_tokens_details": {
        "audio_tokens": 0,
        "cached_tokens": 0
      },
      "total_tokens": 244
    }
  }
]

</details>

<summary>Web Search — Letting the model use OpenAI's built-in web search tool to answer with current information</summary>

const response = await env.AI.run(
  'openai/gpt-5.5',
  {
    input: 'What were the top news stories about Cloudflare this week? Summarise in three bullets.',
    max_output_tokens: 4096,
    tools: [{ type: 'web_search_preview' }],
  },
)
console.log(response)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/v1/responses \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "openai/gpt-5.5",
  "input": "What were the top news stories about Cloudflare this week? Summarise in three bullets.",
  "max_output_tokens": 4096,
  "tools": [
    {
      "type": "web_search_preview"
    }
  ]
}'

Treating “this week” as **June 15–22, 2026**:

- **Cloudflare had a North America/Europe-impacting service incident on June 22.** Its status page said increased error rates and latency began at **13:35 UTC**, affecting **Analytics, CDN/Cache, and Durable Objects**; Cloudflare later pointed to a **fiber cut in Eastern North America** and said traffic-engineering work had mitigated most congestion/packet drops by the afternoon. ([cloudflarestatus.com](https://www.cloudflarestatus.com/incidents/v3yl7jqmqj51))

- **Cloudflare pushed harder into AI-assisted Zero Trust/SASE deployments.** It launched the **Cloudflare One Stack**, a set of agent “skills” for configuring, migrating, and managing Zero Trust environments, alongside a new **Cloudflare One Design Partner** initiative aimed at partners helping customers move from legacy security architectures; early named partners included Arctiq, Consortium, CMT, Presidio, and The Missing Link. ([blog.cloudflare.com](https://blog.cloudflare.com/cloudflare-one-stack/))

- **Cloudflare advanced its “AI agents can build and deploy” strategy.** It introduced **Temporary Cloudflare Accounts for AI agents**, letting agents use `wrangler deploy --temporary` to ship Workers without a prior account for a 60-minute claim window, and also opened more Agents SDK primitives to frameworks such as **Flue** for durable, production-grade agent workflows. ([blog.cloudflare.com](https://blog.cloudflare.com/temporary-accounts/))

{
  "id": "resp_04a2eb20ce6ad6f8016a3999229868819ba43a3002b7e5e301",
  "object": "response",
  "created_at": 1782159650,
  "model": "gpt-5.5-2026-04-23",
  "output": [
    {
      "id": "rs_04a2eb20ce6ad6f8016a399923112c819bbabc8ec848f597e2",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a399923ced4819b94eb840567ee5fc1",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "search",
        "queries": [
          "Cloudflare news this week June 2026 Cloudflare",
          "Cloudflare latest news June 2026",
          "site:blog.cloudflare.com Cloudflare June 2026",
          "Cloudflare stock news this week June 2026"
        ],
        "query": "Cloudflare news this week June 2026 Cloudflare"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a3999282ad8819ba080a8ddfee09e0e",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a39992838d8819b82979350fb85558b",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "search",
        "queries": [
          "Cloudflare outage June 22 2026 status incident",
          "Cloudflare June 22 2026 outage",
          "Cloudflare launches partner initiative AI SASE adoption June 18 2026",
          "Cloudflare news June 17 2026"
        ],
        "query": "Cloudflare outage June 22 2026 status incident"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a39992b85b8819b8494e22e7f1ade54",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a39992b9090819b868cc4de44726b49",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "search",
        "queries": [
          "site:blog.cloudflare.com June 18 2026 Cloudflare blog",
          "site:blog.cloudflare.com June 17 2026 Cloudflare blog",
          "site:blog.cloudflare.com June 16 2026 Cloudflare blog",
          "site:blog.cloudflare.com June 15 2026 Cloudflare blog"
        ],
        "query": "site:blog.cloudflare.com June 18 2026 Cloudflare blog"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a39992d42b8819b91e73be8db39cf7f",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a39992d7720819bb7a20bb6db6d12a7",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "open_page",
        "url": "https://www.cloudflarestatus.com/uptime"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a39992eccb0819ba2f60db633880269",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a39992f55d4819b90baed7dcc1189b4",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "open_page",
        "url": "https://www.cloudflarestatus.com/incidents/v3yl7jqmqj51"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a3999317194819b8aa69341a57c7022",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a3999321808819b8065a8f50825261d",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "search",
        "queries": [
          "Cloudflare after:2026-06-15 before:2026-06-23 news",
          "Cloudflare site:reuters.com after:2026-06-15 before:2026-06-23",
          "Cloudflare site:finance.yahoo.com after:2026-06-15 before:2026-06-23",
          "Cloudflare site:investors.com after:2026-06-15 before:2026-06-23"
        ],
        "query": "Cloudflare after:2026-06-15 before:2026-06-23 news"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a3999393be8819bb6199dd097e3c451",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a39993a4038819bb990a96c3388c97f",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "search",
        "queries": [
          "Cloudflare Flue agent harnesses frameworks June 2026",
          "site:blog.cloudflare.com Flue Cloudflare June 2026",
          "\"Bringing more agent harnesses\" Cloudflare",
          "Cloudflare AI Agents SDK Flue June 2026"
        ],
        "query": "Cloudflare Flue agent harnesses frameworks June 2026"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a399941a9ec819b9772297dbafe616a",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a399941c820819b9c737c5bbac428a5",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "open_page",
        "url": "https://noise.getoto.net/2026/06/17/bringing-more-agent-harnesses-and-frameworks-to-cloudflare-starting-with-flue/"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a399943832c819bb678926f11223a00",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a399943e4d0819bbfeb601cd55a683d",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "open_page",
        "url": "https://blog.cloudflare.com/agents-platform-flue-sdk/"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a399945c25c819b8329904bba285bd7",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a3999491ed0819b8c1623b7545fca7a",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "open_page",
        "url": "https://blog.cloudflare.com/temporary-cloudflare-accounts-for-ai-agents/"
      }
    },
    {
      "id": "rs_04a2eb20ce6ad6f8016a39994b78d0819b8e663097a07806c8",
      "type": "reasoning",
      "content": [],
      "summary": []
    },
    {
      "id": "ws_04a2eb20ce6ad6f8016a39994bb2c4819bb73593fb0cf46293",
      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "open_page",
        "url": "https://blog.cloudflare.com/agents-platform-flue-sdk/"
      }
    },
    {
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      "summary": []
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    {
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      "type": "web_search_call",
      "status": "completed",
      "action": {
        "type": "open_page",
        "url": "https://blog.cloudflare.com/temporary-accounts/"
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    },
    {
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    {
      "id": "msg_04a2eb20ce6ad6f8016a399953b544819ba7651b7966a4cb7e",
      "type": "message",
      "status": "completed",
      "content": [
        {
          "type": "output_text",
          "annotations": [
            {
              "type": "url_citation",
              "end_index": 511,
              "start_index": 430,
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            }
          ],
          "logprobs": [],
          "text": "Treating “this week” as **June 15–22, 2026**:\n\n- **Cloudflare
... response truncated ...

</details>

Parameters

Schema variant

ResponsesChat Completions

▶input

one ofrequired

instructions

string

temperature

numberminimum: 0maximum: 2

max_output_tokens

numberexclusiveMinimum: 0

top_p

numberminimum: 0maximum: 1

stream

boolean

▶tools[]

array

tool_choice

▶text{}

object

▶reasoning{}

object

▶messages[]

arrayrequired

temperature

numberminimum: 0maximum: 2

max_tokens

numberexclusiveMinimum: 0

max_completion_tokens

numberexclusiveMinimum: 0

top_p

numberminimum: 0maximum: 1

frequency_penalty

numberminimum: -2maximum: 2

presence_penalty

numberminimum: -2maximum: 2

stream

boolean

▶stream_options{}

object

▶tools[]

array

tool_choice

response_format

▶modalities[]

array

▶audio{}

object

reasoning_effort

stringOptional reasoning control; availability and accepted values are model-dependent.

string

object

stringconst: response

created_at

number

model

string

▶output[]

array

output_text

string

status

stringenum: in_progress, completed, failed, incomplete

▶usage{}

object

string

object

string

created

number

model

string

▶choices[]

array

▶usage{}

object

API Schemas (Raw)

Input Open Download

Output Open Download

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description: GPT-5.5 pro uses OpenAI's Responses API with built-in tools, improved reasoning, and stateful context management. title: GPT-5.5 pro image: https://developers.cloudflare.com/og-docs.png

Documentation Index
Fetch the complete documentation index at: https://developers.cloudflare.com/llms.txt
Use this file to discover all available pages before exploring further.

GPT-5.5·续

GPT-5.5·续

Parameters

API Schemas (Raw)

On this page