Model Overview & Capabilities
GPT-6 Sol is OpenAI’s high-efficiency frontier coding and reasoning model launched on October 8, 2026, capturing Rank #7 on our leaderboard with an empirical composite score of 49.1. Serving as the direct architectural successor to GPT-5.6 Sol (47.0 index), Sol delivers verified scores of 49.5% on SWE-bench Verified, 51.0% on Terminal-Bench 2.0, 48.0% on Aider Polyglot, and 91.5% on GPQA Diamond scientific reasoning.
Priced at $2.00 per million input tokens and $10.00 per million output tokens ($4.00 blended price under 3:1 input-to-output weighting), GPT-6 Sol reduces API overhead by over 34% compared to legacy Sol iterations while offering an economical $0.0815 per index point. In production streaming environments, Sol maintains a fast 110 tokens per second throughput with a low 1.30-second time to first token and prompt caching reads at $0.10 per million tokens.
Supported by a spacious 1,100,000-token context window and a 32,768-token output ceiling, GPT-6 Sol represents a highly dependable workhorse for automated pull request synthesis, large-scale database schema migrations, unit test generation, and enterprise software engineering copilot integration across distributed developer teams.
