GPT-6.1 Terra lands #8 on Agent Arena with $0.62 median cost, reshaping Pareto frontier
arena · x · 2026-10-29
Arena's real-world leaderboard, built from 9K agentic sessions by its global user community, ranks OpenAI's GPT-6.1 Terra (Max) #8 on Agent Arena with +10.6% net improvement and a median cost of $0.62 per task — reshaping the Pareto frontier. That's 43% cheaper than #7 Gemini 4 Argon (High, $1.09) and 88% cheaper than GPT-6 Astra (Max, $5.16).
Strengths by signal:
- #7 in Steerability (+13.3%): course-correcting when users push back
- #3 in Bash Reliability (+13.2%): command success rate excluding external errors
- #9 in Praise vs Complaint (+16.8%): implicit sentiment in user reactions
An earlier quote-tweet also noted GPT-6.1 Terra hit #14 on Code Arena: WebDev (1671 pts, +151 over GPT-5.6 Terra) at 28% lower cost per task ($0.40 vs $0.56).
Related event: GPT-6.1 Terra Ranks 8th on Agent Arena at $0.62 Median Cost per Task(2 posts)→
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