Open-source OpenScience agent outscores Codex on science benchmarks
Synthetic Sciences' open-source research agent scored 75.7% on Terminal-Bench-Science, above Codex with GPT-6 Astra at 68.1%.
Synthetic Sciences just launched its open-source OpenScience agent now outscores Codex and Claude Code on agentic science benchmarks. A free Apache 2.0 workbench for any provider's model. On Terminal-Bench-Science, 70 research workflows hosted by Stanford and the Laude Institute, OpenScience solved 53 tasks for 75.7%. Codex with GPT-6 Astra scored 68.1%, the top entry on a September 23 mirror of the public leaderboard. The gap widened on Terminal-Bench 4.0's 14 science tasks, where OpenScience scored 71.4% and Claude Code on Claude Fable 5.1 reached 60.0%. GitHub link in comment
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