GPT-5.1 Codex Mini GPT-5.1 Codex Mini is a fast, efficient coding model optimized for quick code completion, simple refactoring, and routine programming tasks. It provides excellent performance for everyday coding needs with lower latency. Benchmark results Service providers AIME 2025 42.1% i Pricing, uptime, and speed via OpenRouter — updated Jul 17, 2026, 04:19 AM. Provider Status Input Output Limits Uptime Speed Notes Azure available $0.25/Mtok cache $0.03/Mtok $2.00/Mtok 400K tokens context 128K tokens max output — — cache $0.01/web search OpenAI available $0.25/Mtok cache $0.02/Mtok $2.00/Mtok 400K tokens context 100K tokens max output 100.0% 5m 100.0% 1,587 ms p50 TTFT 51 tok/s p50 $0.01/web search
GPT-5.1 Codex Mini