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GPT-5 Pro

Parameters

Undisclosed

Context Length

400K

Modality

Text

Architecture

Undisclosed

License

Proprietary

Release Date

7 Aug 2025

Knowledge Cutoff

Aug 2025

API Pricing (per 1M)

Input: $0.63 · Output: $5.00

Evaluation Benchmarks

Rank

#95

BenchmarkScoreRank

Web Development

WebDev Arena
medium

1420

69

General Text

Text Arena
high

1435

84

high

0.38

117

Intelligence Index

Artificial Analysis
high

0.23

low

0.21

145

160

Rankings

Overall Rank

#95

Coding Rank

#102

About GPT-5 Pro

GPT-5 Pro is OpenAI's flagship frontier reasoning model engineered with deep test-time compute for high-stakes mathematical and scientific challenges. It features configurable reasoning effort controls and a 400K token context window.

Technical Specifications

Architecture specifications are undisclosed for proprietary models.

About GPT-5

OpenAI's latest generation of language models featuring advanced reasoning capabilities, extended context windows up to 400K tokens, and specialized variants for coding, general intelligence, and efficiency. GPT-5 series introduces improved thinking modes, superior performance across benchmarks, and variants optimized for different use cases from high-capacity Pro models to efficient Nano models. Features native multimodal understanding, enhanced mathematical reasoning, and state-of-the-art coding abilities through Codex variants.


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