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GPT-5.1

OpenAI · 2025-11-13

GPT-5.1 is OpenAI's API model in the GPT-5 series, designed to balance intelligence and speed across agentic and coding tasks. It dynamically adapts its thinking time to task complexity and supports configurable reasoning effort from none through high.

Benchmark scores

BenchmarkScore
A-Fantasia51.0
A-Fantasia Backwards Spelling63.0
A-Fantasia Chess16.0
A-Fantasia Cube Rotation74.0
AA-LCR75.0
AA-Omniscience Index5.5
Agent Red Teaming k=100 (CAIS)82.1
AHK-Eval69.4
AHK-Eval Algorithms66.7
AHK-Eval Data Structures33.3
AHK-Eval Date and Time33.3
AHK-Eval Easy50.0
AHK-Eval Hard58.3
AHK-Eval Hidden Cases64.6
AHK-Eval Mid75.0
AHK-Eval Numbers100.0
AHK-Eval Parse Success100.0
AHK-Eval Regex50.0
AHK-Eval Strings83.3
AIME 2024 (avg@8)93.8
AIME 2024-202593.3
AIME 2025 (Artificial Analysis avg@10)94.0
AIME 2025 (avg@8)92.9
ALE-Bench1425
Apex Shortlist55.9
ARC-AGI-172.8
ARC-AGI-26.5
Arena Code WebDev — Brand & Marketing1394
Arena Code WebDev — Consumer Product1399
Arena Code WebDev — Content Creation Tools1390
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