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GPT-5

deprecated
OpenAI2025-08-07
Specifications
Modalities
text
image
Context Window400K tokens
Max Output128K tokens
Training Cutoff2024-09-30
Open SourceNo
Pricing (per 1M tokens)
Input$1.2500
Output$10.0000
Cache Read$0.1250
Benchmarks
Arena score (text)1435

Arena ratings: LMArena leaderboard dataset, CC BY 4.0, snapshot 2026-10-28.

MMLU-Pro-
SWE-Bench-
GPQA Diamond-
HumanEval-
ARC-AGI-
MATH-
API
Model IDgpt-5-2025-08-07
API Docs
Sources