Epoch AI

SpireClimb

Evaluated by Epoch AI on their own harness.

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Models9

Top result34.0%GPT-6 Astra

Top-3 spread11.7 pts

Year—

Result and price

9 of 9 results

Results

9 results

#ModelResult

01GPT-6 Astramax effort34.0% ±4.1

02GPT-6.1 Solmax effort23.8% ±3.7

03GPT-6.1 Terramax effort22.3% ±3.4

04Claude Fable 5.2max effort19.6% ±3.5

05GPT-6 Solmax effort9.2% ±2.4

06Claude Opus 5.5max effort5.8% ±2.0

07Claude Fable 5.1max effort2.0% ±1.1

08Claude Sonnet 5.5max effort1.3% ±0.9

09GPT-6 Lunamax effort0.0%