Codex 5.1 Max
Codex 5.1 Max is OpenAI's language model. The maximum-capability tier of OpenAI's Codex 5.1, targeting complex multi-step coding and agentic software development workflows.
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Pricing by Provider
US Dollar ($)
Per 1M tokens
| Provider | Standard | |
|---|---|---|
| Input $ / 1M | Cache Read $ / 1M | |
| $1.25 | $0.125 | |
Cost Calculator
US Dollar ($)
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Codex 5.1 Max | — | — | — | — | Current |
| Codex 5.1 | — | — | — | — | Available |
| Codex 5.1 Mini | — | — | — | — | Available |
| Codex 5.2 | — | — | — | — | Available |
| Codex 5.3 | — | — | — | — | Available |
| Codex Mini | — | 200K | $1.50 | $6.00 | Available |