StepFun Step 5 Preview
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...
StepFun Step 5 Preview costs $1.00 per 1M input tokens and $2.70 per 1M output tokens at the standard tier, the lowest default-region price among the 4 providers SF·SIX tracks, from StepFun (fp8). Cached input reads cost $0.10 per 1M tokens. Updated ; prices checked .
- Developer
- StepFun
- Input modalities
- text, image, video
- Output modalities
- text
- Context tokens
- 1,048,576
- Latest price observation
- 2026-10-17
- Lowest paired standard token quote
- $1.00 input / $2.70 output per 1M tokens
Dated price and provider records
| Provider and channel | Input | Output or native rate | Unit and status | Source and observation |
|---|---|---|---|---|
| DeepInfraOpenRouter | $1.00 | $2.70 | 1M tokenspriced · USD | OpenRouter2026-10-17 |
| FeatherlessOpenRouter | $1.00 | $2.70 | 1M tokenspriced · USD | OpenRouter2026-10-17 |
| InferenceNetOpenRouter | $1.00 | $2.70 | 1M tokenspriced · USD | OpenRouter2026-10-17 |
| StepFunOpenRouter | $1.00 | $2.70 | 1M tokenspriced · USD | OpenRouter2026-10-17 |
Prices by service tier
| Tier | Input / 1M | Output / 1M | Cache read / 1M | Cheapest provider | vs standard (blended) |
|---|---|---|---|---|---|
| Standard | $1.00 | $2.70 | $0.10 | StepFun | 100% |
Each tier’s cheapest endpoint. Standard is the default-region headline; flex and batch trade speed or latency for a lower price, priority and fast cost more for faster service.
Speed by provider
| Provider and terms | Throughput | Latency | Uptime | Input / 1M |
|---|---|---|---|---|
| InferenceNetfp4 | 144 tok/s | 1.12 s | 100.0% | $1.00 |
| StepFunfp8 | 122 tok/s | 1.14 s | 100.0% | $1.00 |
| DeepInfrafp8 | 32 tok/s | 535 ms | 100.0% | $1.00 |
| Featherlessfp4 | 27 tok/s | 5.66 s | 100.0% | $1.00 |
Previous 30 minutes; reported by OpenRouter. Fastest first.
Usage on OpenRouter
| UTC day | Tokens |
|---|---|
| 2026-10-10 | 3,149,891,365,259 |
| 2026-10-11 | 2,466,863,011,089 |
| 2026-10-12 | 3,249,049,356,669 |
| 2026-10-13 | 2,966,448,461,113 |
| 2026-10-14 | 3,737,466,999,284 |
| 2026-10-15 | 1,325,113,004,745 |
| 2026-10-16 | 179,047,849,184 |
OpenRouter rankings (CC BY 4.0), named daily rows. Most-used AI models
Benchmarks
Artificial Analysis Intelligence Index 43.7, coding index Not reported, agentic index Not reported (Artificial Analysis via OpenRouter, CC BY 4.0; not an SF·SIX measurement).
Prediction markets
StepFun Step 5 Preview meets the rule for SF·SIX price and usage ladders; the current average standard input price across qualifying OpenRouter endpoints is $1.00 per 1M tokens. Open StepFun Step 5 Preview markets (Hedera testnet, test funds only) · How AI prediction markets work
Compare and estimate
Sources and method
Prices are USD per 1M tokens at the standard service tier in the default region: the cheapest qualifying provider per model, with flex, batch, priority and fast endpoints and unusually low outliers never used as the headline. “Blended” weights input and output 3:1. Prices from OpenRouter; each row below links its source and observation date. Methodology and editorial policy.
Frequently asked questions
How much does StepFun Step 5 Preview cost per 1M tokens?
$1.00 per 1M input tokens and $2.70 per 1M output tokens at the standard tier, the lowest default-region price SF·SIX tracks, from StepFun (fp8).
Which providers offer StepFun Step 5 Preview?
4 providers with 4 priced endpoints: DeepInfra, Featherless, InferenceNet, StepFun.
What is the context window of StepFun Step 5 Preview?
1,048,576 tokens.
How fast is StepFun Step 5 Preview?
The fastest measured endpoint is InferenceNet (fp4) at 144 tok/s, as reported by OpenRouter for the previous 30 minutes.
How much is StepFun Step 5 Preview used?
179,047,849,184 tokens on 2026-10-16 (UTC) through OpenRouter, per OpenRouter’s public rankings. This is OpenRouter traffic only, not all usage.
These are dated, non-executable observations. Verify the exact endpoint, price and terms with the source before use. Unknown values are not free.