GPT-5.5 Pro

GPT / OpenAI

16scores
13benchmarks
$30 / $180 per 1M tokenscost in/out

Metadata

GPT Closed/API

Aliases: gpt-5.5-pro, gpt-5.5-pro-20260423, gpt-5.5-pro-high, gpt-5.5-pro-xhigh, gpt-5-5-pro-2026-04-23-high, gpt-5-5-pro-2026-04-23-xhigh, openai-gpt-5.5-pro, openai-gpt-5.5-pro-20260423, openai/gpt-5.5-pro, openai/gpt-5.5-pro-20260423

Benchmark Results

Benchmark Category Rank Score Sampled
ARC-AGI-1 Agentic 4 96.50 2026-05-05
ARC-AGI-1 Agentic 7 95 2026-05-05
ARC-AGI-2 Agentic 4 84.58 2026-05-05
ARC-AGI-2 Agentic 5 84.16 2026-05-05
BrowseComp Agentic 1 90.1% 2026-04-23
BLXBench Coding 14 44.50 2026-05-06
Investment Banking Modeling Tasks (Internal) Finance 1 88.6% 2026-04-23
TaxBench Finance 1 29.27% mean pass^5 2026-05-27
GDPval Generalization 3 82.3% 2026-04-23
Humanity's Last Exam Intelligence 2 57.2% 2026-04-23
FrontierMath 2025-02-28 Private Mathematics 1 52.4% 2026-04-23
FrontierMath Tier 4 2025-07-01 Private Mathematics 1 39.6% 2026-04-23
GDPval-MM Multimodal 2 0.82 2026-05-06
CritPt Science 1 30.6% 2026-05-11
GeneBench Science 1 0.33 2026-05-06
GeneBench Science 1 33.2% 2026-04-23