in the loop

GPT-5.6 Terra
#11 of 274 scored.

OpenAIJul 9, 2026Closed

Capabilities Index

Range 157.2–162.7

159.6

Context

Takes file, image, text

1.05M

Input

Per 1M tokens

$2.00

Output

Per 1M tokens

$12

Benchmarks

How it scores.

  • GPQA Diamond91.1%

    16th of 186

  • FrontierMath86.0%

    10th of 81

  • ARC-AGI-283.9%

    12th of 79

  • SimpleQA Verified43.2%

    40th of 77

  • Mock AIME99.7%

    12th of 176

Everything else Epoch has for it

  • ARC-AGI96.5%
  • DTBench88.9%
  • Surface Evolver Bench83.8%
  • WeirdML78.3%
  • ProofBench74.0%
  • FrontierMath-Tier-4-v2-Private70.7%
  • DeepSWE69.6%
  • LMCA64.6%
  • APEX-Agents58.2%
  • Balrog53.2%
  • Chess Puzzles51.6%
  • FrontierCode41.3%
  • SimpleBench38.7%
  • Furniture Assembly34.5%
  • Mystery Game Puzzles28.4%

On the index

Around it.

  1. #8GPT-5.5 ProOpenAI · $30 in162.1
  2. #9Claude Fable 5Anthropic · $10 in162.1
  3. #10GPT-5.6 SolOpenAI · $2.00 in161.7
  4. #11GPT-5.6 TerraOpenAI · $2.00 in159.6
  5. #12GPT-5.5OpenAI · $5.00 in159.1
  6. #13GPT-5.4 ProOpenAI · $30 in158.9
  7. #14Claude Opus 4.8Anthropic · $5.00 in158.2

Sources