Text model
GPT-5.1 Codex Max
openai/gpt-5.1-codex-max
openai/gpt-5.1-codex-max is a language model from OpenAI you can call on the OceanToken API at $1.25 per 1M input tokens and $10.00 per 1M output tokens, with a 272K-token context window and up to 128K output tokens; it supports reasoning, tool calling, image input.
At a glance
| Model ID | openai/gpt-5.1-codex-max |
|---|---|
| Type | Text |
| Publisher | OpenAI |
| Context window | 272,000 tokens |
| Max output | 128,000 tokens |
| Input price | $1.25 per 1M tokens |
| Output price | $10.00 per 1M tokens |
| Cached input price | $0.125 per 1M tokens |
| Capabilities | reasoning, tool calling, image input |
| Endpoint | /v1/chat/completions, /v1/responses |
| API shape | OpenAI-compatible |
| In the catalog since | 2025-12-04 |
Call it
Base URL https://api.oceantoken.ai/v1, your OceanToken key as the bearer token, and the model ID above as model. The OpenAI SDKs work unchanged; see your first request.
curl https://api.oceantoken.ai/v1/chat/completions \
-H "Authorization: Bearer $OCEANTOKEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "openai/gpt-5.1-codex-max", "messages": [{"role": "user", "content": "Hello"}]}'
Compared with similar models
Text models on OceanToken closest to openai/gpt-5.1-codex-max in price. Every price is what you pay, in US dollars, with no platform fee on top.
| Model | Publisher | Context | Price (per 1M tokens) |
|---|---|---|---|
| GPT-5.1 Codex Max | OpenAI | 272,000 | $1.25 / $10.00 |
Claude Sonnet 5anthropic/claude-sonnet-5 | Anthropic | 1M | $2.00 / $10.00 |
Claude Sonnet 5.5anthropic/claude-sonnet-5.5 | Anthropic | 1M | $2.00 / $10.00 |
Command Acohere/command-a | Cohere | 256K | $2.50 / $10.00 |
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All OpenAI models on OceanToken
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Prices and capabilities on this page were read from the live OceanToken catalog on 2026-10-18 (UTC), when the documentation was built. If a price has changed since, the console's Models page shows the current one.