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Checked Active: 2026-10-15
OpenAI
GPT-6.1 Sol
Best value agentic coding, especially through Codex.
Evaluation Analysis: Per GenAI Brief (Oct 2026): ties Claude Opus 5.5 on DeepSWE v1.1 at 72.3% and scores 58.2% on Terminal-Bench 4.0 (Codex, max) at roughly one seventh of the cost per trial.
Context Window1.05M tokens (128K max output)
Input Price / 1M$2.00
Output Price / 1M$10.00
Release Date2026-09
Specs and prices checked 2026-10-15 against the official page.