GPT-6.1 Terra
ECI#3
168GPT-6.1 Terra is a closed-weights model from OpenAI, released October 26, 2026. It has an ECI score of 168 and ranks 3rd of 253 tracked models.
GPT-6.1 Terra vs select alternatives
| Domain | Benchmark | GPT-6.1 Terra | |||
|---|---|---|---|---|---|
ECI scoreBest score 169 | 168 | 169 | 168 | 166 | |
| Ranking | #3 | #1 – Best | #2 | #7 | |
| Agent | Vending-Bench 2Best score $16,484 | $9,107 | $15,515 | $9,235 | $13,718 |
| Games | Earthborne Rangers (EBR-bench)Best score 78% | ||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 100% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Multimodal | Furniture Assembly BenchmarkBest score 83% | ||||
| Science | GPQA DiamondBest score 96% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |
