Models · OpenAI
GPT-5.1-Codex-Max
Released 4 Dec 2025Sees imagesTool useReasoning
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...
Input$1.25₹110 · per 1M tokens
Output$10₹880 · per 1M tokens
Context400Ktokens it can read at once
Max output128Ktokens per reply
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What would it cost?
- GPT-5.1-Codex-Max$48.75 · ₹4,290 a month · $0.005 · ₹0.43 each
Estimate from list prices per token, at ₹88/$. Caching, batch discounts and taxes aren't included. A token is about ¾ of a word.