stepfun-ai/step-3.5-flash| Provider | Input, $ per 1M | Output, $ per 1M | In our data since |
|---|---|---|---|
| Vercel | $0.09 | $0.3 | 31 Jul 2026 |
| siliconflow-cn | $0.1 | $0.3 | 31 Jul 2026 |
| stepfun-ai | $0.1 | $0.3 | 31 Jul 2026 |
| EmpirioLabs AI | $0.1 | $0.3 | 31 Jul 2026 |
| Hugging Face | $0.1 | $0.3 | 31 Jul 2026 |
| Kilo Code | $0.1 | $0.3 | 31 Jul 2026 |
| OpenRouter | $0.1 | $0.3 | 31 Jul 2026 |
| SiliconFlow | $0.1 | $0.3 | 31 Jul 2026 |
| StepFun | $0.1 | $0.3 | 31 Jul 2026 |
| ZenMux | $0.1 | $0.3 | 31 Jul 2026 |
| NanoGPT | $0.2 | $0.5 | 31 Jul 2026 |
Only the base tier and only per-token prices are shown. Batch, discounted and cached rates, as well as prices per image or per second of video, do not go into this table: they cannot stand in the same column as a price per million tokens.
The date in the last column is the day this price first entered our collection. The price may well be older: before that day we simply were not recording it. It has not changed since — otherwise a new row with a new date would stand in its place.
| Task set | Result | Run conditions | Measured by |
|---|---|---|---|
| Arena Score, programming | 1,436.75 1,431–1,443 | — | — |
| Arena Score, expert questions | 1,423.33 1,414–1,432 | — | — |
| Arena Score in Spanish | 1,419.82 1,404–1,435 | — | — |
| Arena Score in French | 1,419.49 1,404–1,435 | — | — |
| Arena Score in English | 1,418.24 1,413–1,423 | — | — |
| Arena Score, hard prompts | 1,411.66 1,407–1,416 | — | — |
| Arena Score, mathematics | 1,406.89 1,396–1,418 | — | — |
| Arena Score, multi-turn dialogue | 1,404.14 1,397–1,411 | — | — |
| Arena Score, overall | 1,404.04 1,400–1,408 | — | — |
| Arena Score, long queries | 1,404.01 1,399–1,409 | — | — |
| Arena Score in Russian | 1,387.15 1,379–1,395 | — | — |
| Arena Score, instruction following | 1,385.44 1,380–1,391 | — | — |
| Arena Score, creative writing | 1,355.92 1,349–1,363 | — | — |