GPT-5.1 Medium

Name: GPT-5.1 Medium
Author: OpenAI

Multimodal

OpenAI

GPT-5.1 Medium balances reasoning depth with response speed, providing medium-intensity thinking for moderately complex tasks. This variant offers more thorough analysis than instant responses while maintaining higher throughput compared to high-intensity reasoning.

Key Specifications

Parameters

Context

256.0K

Release Date

November 11, 2025

Average Score

98.0%

API Documentation Results Blog

Timeline

Key dates in the model's history

Announcement

November 11, 2025

Today

March 25, 2026

Technical Specifications

Parameters

Training Tokens

Knowledge Cutoff

Family

Capabilities

MultimodalZeroEval

Pricing & Availability

Input (per 1M tokens)

$1.00

Output (per 1M tokens)

$4.00

Max Input Tokens

256.0K

Max Output Tokens

64.0K

Supported Features

Function CallingStructured OutputCode ExecutionWeb SearchBatch InferenceFine-tuning

Benchmark Results

Model performance metrics across various tests and benchmarks

Other Tests

Specialized benchmarks

AIME 2025

• Self-reported

98.0%

License & Metadata

License

proprietary

Announcement Date

November 11, 2025

Last Updated

November 11, 2025

Compare GPT-5.1 Medium

All comparisons

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

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