Updated daily at 05:00 UTC
- Released
- Sep 2026
- Status
- Current
- Context
- 1M
- Max output
- 65.5K
- Input per 1M tokens
- $1.00
- Output per 1M tokens
- $2.70
- Open weights
- No
- License
- proprietary
- Parameters
- —
- Knowledge cutoff
- —
- Reasoning
- Yes
- Modalities
- text, image, video → text
Category scores
Out of 100, from independent and third-party results only, by method category-2026-09-29.1.
| Category | Score | Rank | Coverage |
|---|---|---|---|
| Human preference | 72.1 | Not ranked | 1 of 5 |
Benchmark results
Every result we hold for this model, with who ran it and where it was published.
Human preference
| Benchmark | Metric | Value | Provenance | Setting | Evaluated | Source |
|---|---|---|---|---|---|---|
| Code Arena: WebDev (arena.ai) | Arena score (Elo scale) | 1565 | Independent | high | 25 Sep 2026 | Arena |
| Code Arena: WebDev (arena.ai) | Votes | 1247 | Independent | high | 25 Sep 2026 | Arena |
Other Step versions
- Step 3.7 FlashMay 2026
- Step 3.5 FlashJan 2026
- Step3Jul 2025
- Step-2Jul 2024
- Step-1—
- Step-2-mini—