GPT-6.1 Terra hits ~60% on Agents' Last Exam at $1/task, 9x cheaper than Opus 5.5
ChrisGPT · x · 2026-10-27
OpenAI released GPT-6.1 Terra, a fast, low-cost computer-use model:
- Scores 60% on Agents' Last Exam at roughly $1 per task; Claude Opus 5.5 scores a few points higher but costs 9x more
- Tasks complete over 3x faster than GPT-6 Astra and GPT-6.1 Sol
- API pricing: $1/M input tokens, $5/M output tokens
- Benchmark charts show strong cost-performance at the low end, though Sonnet 5.5 still leads on tasks like Terminal-Bench
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