****OpenAI GPT-5.5 / Pro API launch (agentic coding/science leaps, 400K ctx, benchmarks crush Claude)****
Key Questions
What are the key benchmarks for GPT-5.5 compared to Claude?
GPT-5.5 scores 82.7% on Terminal-Bench (vs Claude's 69.4%) and 84.9% on GDPVal. It excels in agentic coding, science, math, and builds like Three.js/RPG/websites.
What is the context window size for GPT-5.5 Pro API?
GPT-5.5 Pro API offers a 400K context window with omnimodal and agentic gains. It features 2x API pricing and NVIDIA co-design.
How does GPT-5.5 perform against Opus 4.7 in hands-on coding tests?
Hands-on comparisons show mixed results, with Claude maintaining a coding edge over GPT-5.5 Codex/Opus 4.7. Videos highlight clear winners in specific tasks but persistent Claude SWE lead.
GPT-5.5/Pro API rollout Jun 2026 post-Apr debut hype: 82.7% Terminal-Bench (vs Claude 69.4%), 84.9% GDPVal, 400K ctx, omnimodal/agentic gains (Three.js/RPG/science/math/website builds); 2x API price/NVIDIA co-design; hands-on vs Opus 4.7/Codex: mixed results, Claude coding edge persists; challenges Opus 4.7 SWE lead. Watch ChatGPT iOS/Mac impacts/Images 2/Codex enterprise/agentic workflows.