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GPT-5.1

gpt-5.1

Flagship GPT-5 for coding and agentic tasks with configurable reasoning.

Context Window

400K

tokens

Max Output

128K

tokens

Input Price

$2.00

per 1M tokens

Output Price

$14.00

per 1M tokens

Details

Familygpt-5
Training Cutoff2025-09-30
ReleasedNovember 13, 2025

Capabilities

VisionFunctionsStreamingJSON ModeCodeReasoningTool UseMultimodal
Documentation
https://api.openai.com/v1/chat/completions

Evaluation Scores(6 benchmarks)

HumanEval
92%
MATH-500
90.5%
MMLU-Pro
83.5%
GPQA Diamond
72%
SWE-bench Verified
50%

Quick Access

curl pikaainews.com/api/models/openai-gpt-5-1
npx pika-models info openai-gpt-5-1