Step 3.7 Flash
by StepFunChat
Newer StepFun flash model for faster agents, coding, and multimodal prompts
- Context
- 256K tokens
- Max output
- 256,000 tokens
- Parameters
- 201B total, 11B active
- Released
- 2026-05-29
- Weights
- Open
- Licence
- apache-2.0
stepfun/step-3-7-flash · also seen as step-3.7-flash:free, stepfun-ai/Step-3.7-Flash, stepfun/step-3.7-flash-free, stepfun/step-3.7-flash:thinking, +4 more
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-05-29
- Weights
- Opennot gated
- License
- apache-2.0
- Input
- Text, Image, Video
- Output
- Text
- Context window
- 256,000 max across endpoints
- Max output
- 256,000
- Providers
- 10 + 13 gateways, not counted as providers
- Epoch Capabilities Index
- not evaluated
- Direct price range
- $0.185–$0.200 in · $1.11–$1.15 out per 1M tokens · 6 of 10 providers have a comparable price
More details
- Last updated
- 2026-06-29
- Knowledge cutoff
- 2026-03-01
- Weights link
- Hugging Face · stepfun-ai/Step-3.7-Flash
- Parameters
- 201B total, 11B active
- Developer country
- China
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel toolsunknown
- Structured output
- Reasoning
- Image input
- PDF input
- Audio input
- Audio outputunknown
- Video input
- Prompt caching
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperature
- Streamingunknown
- Attachments
Endpoints
One row per provider and variant; gateways are listed separately.
Loading endpoints…
Price history
Atom feedNo change since 19 Oct 2026. The cheapest direct price has been $0.185 in / $1.11 out per 1M tokens at StepFun (China) on every data refresh since then.
Tracked from 19 Oct 2026. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON
Cost calculator
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Similarly priced models
Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).
| Model | Blended/1M | In/1M | Out/1M | Context | vs Step 3.7 Flash |
|---|---|---|---|---|---|
| Llama 4 Maverick 17b 128e InstructMeta | $0.362 | $0.24 | $0.97 | 1.05M | +1% |
| MiniMax LatestMiniMax | $0.352 | $0.23 | $0.96 | 1M | −2% cheaper |
| MiniMax-M3MiniMax | $0.352 | $0.23 | $0.96 | 1M | −2% cheaper |
| Llama 3.1 Nemotron 70B InstructNVIDIA | $0.366 | $0.357 | $0.408 | 128K | +2% |
| Qwen2.5 72B InstructAlibaba (Qwen) | $0.367 | $0.36 | $0.40 | 131K | +2% |
| MiniMax Text 01MiniMax | $0.35 | $0.20 | $1.10 | 1M | −2% cheaper |
| DeepSeek V3.1DeepSeek | $0.367 | $0.25 | $0.95 | 164K | +2% |
| MAI-Code-1.1-FlashMicrosoft | $0.367 | $0.20 | $1.20 | 256K | +2% |
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