GPT-5.1-CODEX Mini
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex.
Input
Output
Context
400K
Max Output
100K
Parameters
—
Technical Specifications
Model TypeChat
Context Window400K
Max Output Tokens100K
Parameters—
Training Cutoff—
Licenseproprietary
Capabilities
Input Modalities
imagetext
Output Modalities
text
Features
code_completioncode_generationcode_reviewfunction_callingjson_modereasoningstreamingtool_usevision
Benchmarks
16.9%
HLE
81.3%
GPQA
42.6%
SciCode
82.0%
MMLU Pro
91.7
Math
36.4
Coding
83.6%
LiveCodeBench
38.6
Intelligence
189
Speed (tok/s)
4.0
TTFA (s)
4.0
TTFT (s)
Resources & Links
proprietary — Proprietary - API access only
Related Tools
Data sourced from official provider APIs and documentation
Last updated: May 5, 2026
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