GPT-5.1 High

Name: GPT-5.1 High
Author: OpenAI

Multimodal

OpenAI

GPT-5.1 High provides extended reasoning capabilities with a high level of thinking for complex tasks. This variant offers deeper analysis and more thorough responses compared to the base model, making it ideal for complex tasks requiring extended reasoning.

Key Specifications

Parameters

Context

256.0K

Release Date

November 11, 2025

Average Score

94.0%

API Documentation Results Blog

Timeline

Key dates in the model's history

Announcement

November 11, 2025

Today

March 26, 2026

Technical Specifications

Parameters

Training Tokens

Knowledge Cutoff

Family

Capabilities

MultimodalZeroEval

Pricing & Availability

Input (per 1M tokens)

$2.00

Output (per 1M tokens)

$8.00

Max Input Tokens

256.0K

Max Output Tokens

128.0K

Supported Features

Function CallingStructured OutputCode ExecutionWeb SearchBatch InferenceFine-tuning

Benchmark Results

Model performance metrics across various tests and benchmarks

Reasoning

Logical reasoning and analysis

GPQA

• Self-reported

88.0%

Other Tests

Specialized benchmarks

AIME 2025

• Self-reported

100.0%

License & Metadata

License

proprietary

Announcement Date

November 11, 2025

Last Updated

November 11, 2025

Compare GPT-5.1 High

All comparisons

vs GPT-5.4 vs GPT-5.1 Codex High vs GPT-5 High vs GPT-5.1 Thinking vs GPT-5.2 vs GPT-5.1 Medium vs GPT-5 Medium vs GPT-5.1 Instant

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