Stepfun
Step 5 Preview
Released 2026-10-08
Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...
You send / 1M
$1.00
tokens in
It replies / 1M
$2.70
tokens out
Memory
1.05M
tokens it can read at once
Typical request
$0.0027
1,000 words in, 400 out
Data privacy
No training or retention: Yes. At least one provider serves it with zero data retention.
| Provider | You send / 1M | It replies / 1M | Uptime | Privacy policy |
|---|---|---|---|---|
| Featherless · fp4 | $1.00 | $2.70 | 100% | Read |
| DeepInfra · fp8 | $1.00 | $2.70 | 99% | Read |
Based on OpenRouter and Vercel AI Gateway data. Confirm terms with the provider before sending sensitive data.
What it can do
- Reads: text, image, video
- Writes: text
- Reasoning: Yes
- Tool calling: Yes
- Longest reply: 64K tokens
- Repeated text is billed at $0.100 per 1M (prompt caching)
- Intelligence score: 43.7 / 100 (Artificial Analysis)
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Appears in
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