GPT-5.1-Codex-Max
OpenAI
GPT-5.1-Codex-Max by OpenAI costs — per 1M input tokens and — per 1M output tokens, with a —-token context window.
Pricing
Input (per 1M tokens)
—
Output (per 1M tokens)
—
Cached input (per 1M)
—
Specifications
- Provider
- OpenAI
- Context window
- —
- Parameters
- —
- Released
- Nov 2025
- Open weights
- No
- Frontier model
- No
Benchmarks
- LiveBench
- 74.4
Compare GPT-5.1-Codex-Max with…
GPT-5.1-Codex-Max vs DeepSeek V3.1 Terminus$1.00/1MGPT-5.1-Codex-Max vs Qwen2.5 Coder 32B Instruct$1.00/1MGPT-5.1-Codex-Max vs Nemotron 3 Super 120B A12B$1.00/1MGPT-5.1-Codex-Max vs MiniMax M2$1.02/1MGPT-5.1-Codex-Max vs Llama-4-Maverick-17B-128E-Instruct-FP8$0.97/1MGPT-5.1-Codex-Max vs MiniMax M3 Thinking$0.96/1M
FAQ
How much does GPT-5.1-Codex-Max cost?
GPT-5.1-Codex-Max is priced at — per 1M input tokens and — per 1M output tokens. Output tokens cost more than input.
What is GPT-5.1-Codex-Max's context window?
GPT-5.1-Codex-Max supports a context window of — tokens — the maximum prompt plus response length it can handle in a single request.
Is GPT-5.1-Codex-Max open weight?
No — GPT-5.1-Codex-Max is a closed/proprietary model accessed via API.
Data as of 2026-11-01. Source: Epoch AI, Data on AI Models (CC BY 4.0), epoch.ai. Pricing is per 1M tokens (USD); confirm with the provider before production use.