Try Bifrost Enterprise free for 14 days.
Request access
[ MODEL COMPARISON ]

Compare gpt-5.1-codex-max with other models

Select another model to compare pricing, limits, and capabilities with gpt-5.1-codex-max.

OpenRouter logo
VS
Models
OpenRouter logogpt-5.1-codex-max
openrouter
—
—
Context Length
400K
—
Max Output
128K
—
Input Cost
$1.25/M
—
Output Cost
$10.00/M
—
Mode
Chat
—
Max Input Tokens
400K
—
Max Tokens
128K
—
Provider
OpenRouter
—
Tool Choice
Yes
—
Prompt Caching
Yes
—
[ WE'RE OPEN SOURCE ]

Scale with the Fastest LLM Gateway

Built for enterprise-grade reliability, governance, and scale. Deploy in seconds.

or, Get started here

Comparison Insights

Comprehensive analysis based on the latest model metadata from the comparison table above.

What should I know about gpt-5.1-codex-max?

Overview

  • gpt-5.1-codex-max is a chat model provided by OpenRouter.
  • With a context window of 400K tokens, this model can handle substantial inputs such as detailed documents or extended conversation histories.

Pricing

  • Input processing costs $1.25 per million tokens.
  • Output generation costs $10.00 per million tokens.

Output Capabilities

  • The model can generate up to 128K tokens in a single response.
What capabilities does gpt-5.1-codex-max support?
  • Supports function calling, enabling integration with external tools and APIs for extended functionality.
  • Includes vision capabilities to process and analyze images alongside text inputs.
  • Features advanced reasoning capabilities for complex problem-solving and multi-step logical tasks.
  • Allows explicit tool selection, giving developers fine-grained control over function execution.
  • Implements prompt caching to reduce costs and latency for repeated or similar queries.