Step 5 Preview
The 4th most-used model on the router over the last 7 days, with 5.1% of tokens. Weekly share peaked at 5.1% in the week of Oct 5, 2026, with 8.8T tokens processed since Oct 5, 2026.
- Launch
- Oct 8, 2026
- Context
- 1M tokens
- Modality
- text, image and video → text
- Reasoning
- yes
- License
- Open weights
- Input
- $1.00 / 1M
- Output
- $2.70 / 1M
Weekly token share
Share of the router's weekly volume, since the first week with volume
Only one full week so far: 5.1% of volume in the week of Oct 5, 2026. The chart appears from the second week on.
What this model is used for new
Tasks where the model ranks among the leaders, and its share of each
Ranks among the leaders in 12 of the 29 classified tasks. Its largest share is in summarization, 59.3% of the task's tokens; in the heaviest task where it appears, code generation (12.8% of classified volume), it holds 4.4%.
Snapshot of the rolling 7-day window through Oct 11, 2026. Share: the model's tokens in the task over the task's total tokens. Weight: the task's share of classified volume.
Where to run it
Endpoints in the source's catalog, from cheapest to most expensive on input
| Provider | Input | Output | Context | Quantization | Zero retention |
|---|---|---|---|---|---|
| StepFun | $1.00 | $2.70 | 1M | fp8 | no |
1 endpoint across 1 provider. None declares zero data retention.
Prices in US dollars per million tokens, from the latest archived endpoint catalog.
Benchmarks
Artificial Analysis indexes and benchmarks run by the source, with cost per task
No Artificial Analysis index and no source-run benchmark for this model. A missing benchmark is not a low score.
Against the week's largest models
The five largest proprietary and five largest open-weights models over the last 7 days
| Model | Lab | 7-day share | Blended price | Context | Intelligence | Weeks in top 10 |
|---|---|---|---|---|---|---|
| Proprietary | ||||||
| GPT-6 LunaOpenAI | OpenAI | 4.1% | $0.20 | 1M | 38.1 | 3 |
| Claude Opus 5.5Anthropic | Anthropic | 2.9% | $8.00 | 1M | 57.6 | 1 |
| jev-1.13Typesafe | Typesafe | 2.0% | — | — | — | 0 |
| Claude Sonnet 5.5Anthropic | Anthropic | 1.4% | $4.00 | 1M | 56.0 | 0 |
| Muse Spark 1.3 ContributorMeta | Meta | 1.3% | $0.125 | 1M | — | 0 |
| Open weights | ||||||
| DeepSeek V4.1 FlashDeepSeek | DeepSeek | 23.8% | $0.263 | 1M | 39.5 | 5 |
| GLM 5.3 FlashZ.ai (GLM) | Z.ai (GLM) | 7.1% | $0.317 | 1M | 41.8 | 7 |
| MiMo-V2.6-FlashXiaomi | Xiaomi | 6.7% | $0.175 | 1M | 37.9 | 3 |
| Step 5 Previewthis pageStepFun | StepFun | 5.1% | $1.43 | 1M | — | 1 |
| Hy4 previewTencent | Tencent | 4.8% | $1.25 | 1M | — | 6 |
Share over the last 7 days (Oct 5, 2026 to Oct 11, 2026). Blended price in US dollars per million tokens, weighted 75% input and 25% output. A dash means the number is not published, not zero.