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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 (Valid Attempts with Retries)51.0
A-Fantasia Backwards Spelling63.0
A-Fantasia Chess16.0
A-Fantasia Chess (Valid Attempts with Retries)16.0
A-Fantasia Cube (Valid Attempts with Retries)74.0
A-Fantasia Cube Rotation74.0
A-Fantasia Spelling (Valid Attempts with Retries)63.0
AA-LCR75.0
AA-LCR v1.180.0
AA-Omniscience Index5.4
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 202594.0
AIME 2025 (Artificial Analysis avg@10)94.0
AIME 2025 (avg@8)92.9
AIME 2025 (MathArena repeated-run mean)94.2
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