OpenAI Launches GPT-5.5 with 82.7% Benchmark Accuracy

OpenAI announced GPT-5.5 release, available to Plus, Pro, Business, Enterprise users via ChatGPT and Codex platforms.
GPT-5.5 achieved 82.7% on Terminal‑Bench 2.0, 58.6% on SWE‑Bench Pro, and 73.1% on internal Expert‑SWE coding evaluation.
Model scored 84.9% on GDPval, 78.7% on OSWorld‑Verified, 25.0% on GeneBench, and 80.5% on BixBench, showing research gains.
API pricing set at $5/$30 per million input/output tokens; Pro tier $30/$180, with token context window and “Trusted Access for Cyber” program.