OpenAI benchmarks GPT-6.1 Terra against Claude Opus 5.5

An independent benchmark comparison between OpenAI's GPT-6.1 Terra and Anthropic's Claude Opus 5.5 at max effort found that Terra tied on release triage, scored higher on cell lineage, and successfully completed a large-table CI history audit where Opus failed to finish. Terra achieved these results at approximately 12.1 percent of Opus's estimated uncached token cost and in less total time across the three tests. Open article →