in the loop

Step 5 Preview
Not scored yet.

StepFunOct 8, 2026

Capabilities Index

Not run yet

–

Context

Takes text, image, video

1M

Input

Per 1M tokens

$1.00

Output

Per 1M tokens

$2.70

Benchmarks

No independent scores yet.

Epoch AI hasn't run Step 5 Preview yet. Its scores show up here the morning after they do.

On the index

The top of the index.

  1. #1Claude Opus 5.5Anthropic · $4.00 in167.3
  2. #2GPT-6 AstraOpenAI · $10 in166.4
  3. #3GPT-6.1 SolOpenAI · $2.00 in166.1
  4. #4Claude Sonnet 5.5Anthropic · $2.00 in165.0
  5. #5Claude Fable 5.1Anthropic · $10 in164.7
  6. #6Claude Opus 5Anthropic · $5.00 in162.8

Sources