> ## Documentation Index
> Fetch the complete documentation index at: https://docs.venice.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# GPT-5.5 API

> GPT-5.5 API on Venice: 1M context, $5.00 input and $30.00 output per 1M tokens. Anonymized access without your identity. Pricing, specs and code examples.

> [accordion] Plain-text specification
>
> ## GPT-5.5 API
>
> GPT-5.5 is a large language model by OpenAI, available on the Venice API as `openai-gpt-55`. Requests are anonymized, so the provider never sees your identity.
>
> GPT-5.5, the successor to GPT-5.4, is a frontier model in the GPT-5 series with a 1M+ context window, offering improved agentic and long context performance. It uses adaptive reasoning to dynamically allocate computation across tasks.
>
> ### GPT-5.5 API pricing
>
> | Model ID | Variant | Privacy | Price |
> | - | - | - | - |
> | `openai-gpt-55` | Standard | Anonymized | $5.00 / $30.00 per 1M |
>
> ### GPT-5.5 specifications
>
> | Spec | Value |
> | - | - |
> | Provider | OpenAI |
> | Released | Apr 23, 2026 |
> | Privacy | Anonymized |
> | Status | Stable |
> | Context window | 1M tokens |
> | Max output | 128K tokens |
> | Reasoning effort | none, low, medium, high, xhigh |
>
> ### How to use the GPT-5.5 API
>
> Send requests to `POST https://api.venice.ai/api/v1/responses` with `"model": "openai-gpt-55"` and your API key.
>
> ```bash theme={"system"}
> curl https://api.venice.ai/api/v1/responses \
>   -H "Authorization: Bearer $VENICE_API_KEY" \
>   -H "Content-Type: application/json" \
>   -d '{
>     "model": "openai-gpt-55",
>     "input": "Explain TEE attestation in two sentences.",
>     "reasoning": { "effort": "high" }
>   }'
> ```
>
> ### Related models
>
> * [GPT-5.4 API](https://docs.venice.ai/models/gpt-5-4.md): $2.50 / $15.00 per 1M
> * [GPT-5.2 API](https://docs.venice.ai/models/gpt-5-2.md): $1.75 / $14.00 per 1M
> * [Claude Opus 4.7 API](https://docs.venice.ai/models/claude-opus-4-7.md): $5.00 / $25.00 per 1M
> * [Claude Opus 4.8 API](https://docs.venice.ai/models/claude-opus-4-8.md): $5.00 / $25.00 per 1M
> * [Claude Opus 4.6 API](https://docs.venice.ai/models/claude-opus-4-6.md): $5.00 / $25.00 per 1M
> * [Claude Opus 5 API](https://docs.venice.ai/models/claude-opus-5.md): $5.00 / $25.00 per 1M


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.