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openai/gpt-5.1-codex-mini
Details
Overview
DescriptionGPT-5.1 Codex Mini is a smaller, more cost-effective version of GPT-5.1 Codex, tuned for agentic coding workloads where efficiency matters more than peak capability. It supports a 400,000-token input context with 128,000 output tokens, text and image inputs, and exposes streaming, function calling, and structured outputs with reasoning-token support.
AuthorOpenAI
CategoryText Generation
Context length400K
Providers2
Pricing (per 1M tokens)
Input$0.25
Output$2.00
Capabilities
Reasoning
Tool calling
Vision
Streaming
Token activity (30 days)
Usage
Artificial Analysis
Intelligence38.6
Coding36.4
Benchmarks
GPQA Diamond0.8
HLE0.2
MMLU-Pro0.8
IFEval0.7
LiveCodeBench0.8