GPT-5.1-Codex-Max pricing & price history
GPT-5.1-Codex-Max by OpenAI costs $1.25 per 1M input tokens and $10.00 per 1M output tokens, with a 400K token context window.
Price history
No price changes since tracking began on 2026-09-24. We check hourly.
Cost calculator
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About GPT-5.1-Codex-Max
GPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasoning stack and trained on agentic...
FAQ
How much does GPT-5.1-Codex-Max cost?
GPT-5.1-Codex-Max by OpenAI costs $1.25 per 1M input tokens and $10.00 per 1M output tokens, with a 400K token context window. A typical request with 2,000 input and 500 output tokens costs about $0.0075.
What is the context window of GPT-5.1-Codex-Max?
GPT-5.1-Codex-Max supports up to 400,000 tokens of context and up to 128,000 output tokens per request.
Has GPT-5.1-Codex-Max’s price changed?
No price changes recorded since ModelBank started tracking it on 2026-09-24.
Is GPT-5.1-Codex-Max being deprecated?
No retirement date has been announced for GPT-5.1-Codex-Max as of 2026-09-24.
What are cheaper alternatives to GPT-5.1-Codex-Max?
Cheaper options include Ministral 3 8B 2512 ($0.15/$0.15), Llama 4 Scout ($0.10/$0.30), MiMo-V2.6-Flash ($0.14/$0.28), Llama Guard 4 12B ($0.18/$0.18).