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Step 5 Preview: price, performance and context
Open Step 5 Preview by StepFun costs $1.00 per 1M input and $2.70 per 1M output tokens, handles up to 1M tokens in one request (≈ 3,100 pages of text) and scores 43.7 points on the AgentKernel performance index, rank 17 of 213.
Privacy: zero data retention with 3 providers, not in the EU. Availability over the last 24 h: 100%.
Open in the interactive comparisonKey facts
- Licence
- Open weights: free to download and self-host
- Input / 1M tokens
- $1.00
- Output / 1M tokens
- $2.70
- Context window
- 1M tokens
- Max. output
- 64K tokens
- Performance index
- 43.7 points · rank 17 of 213
- Coding index
- n/a
- Agentic index
- n/a
- Cost at your usage
- $1.675 / month
- Knowledge cutoff
- n/a
- In the catalog since
- Oct 08, 2026
- Capabilities
- Reasoning, Vision, Tool Calling
What do you get for $10.00?
Rules of thumb from the cost calculator, base rates without caching or taxes.
| Task | Cost per task | For $10.00 |
|---|---|---|
| Chat repliesA question with a short history, a detailed answer | $0.002 | 6,100 |
| Email draftsBullet points in, a finished email out | $0.001 | 7,500 |
| Document summariesRead 10 pages, write a one-page summary | $0.005 | 2,200 |
| Code reviewsReview and comment on 500 lines of code | $0.008 | 1,200 |
| Book analysesAnalyse a 300-page book in one go | $0.105 | 94 |
Cheaper with similar performance
| Model | Licence | Performance | Your cost / month |
|---|---|---|---|
| Ling 3.1 FlashinclusionAI | Proprietary | 41.1 | $0.131 |
| DeepSeek V4.1 FlashDeepSeek | Open | 39.5 | $0.207 |
| Claude Haiku 5.5Anthropic | Proprietary | 43.4 | $0.225 |
Stronger models
| Model | Licence | Performance | Your cost / month |
|---|---|---|---|
| Grok 4.6xAI | Proprietary | 44.3 | $3.50 |
| GLM 5.3Z.ai | Open | 44.8 | $1.279 |
| Qwen3.8 Max (0902)Qwen | Proprietary | 45.4 | $3.50 |
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Markdown (e.g. GitHub README)
[](https://www.agentkernel.si/models/stepfun/step-5-preview/)HTML
<a href="https://www.agentkernel.si/models/stepfun/step-5-preview/"><img src="https://www.agentkernel.si/badge/stepfun/step-5-preview.svg" alt="AgentKernel ranking" height="20"></a>