Step 3.7 Flash API Pricing / Price per 1M tokens
阶跃星辰 (StepFun) • API Price Comparison
Also known as: stepfun-step-3-7-flash · stepfun step 3 7 flash · stepfunstep37flash · stepfun-step3-7-flash · stepfun step3 7 flash · step-3.7-flash · step3.7flash · step3.7-flash · step3.7 flash
API pricing and token costs at a glance
Updated on · Published currencies / per 1M tokens; cheapest ranked by input
| Channel | Input / 1M | Output / 1M | Cache read / 1M | Updated / verified on |
|---|---|---|---|---|
| 阶跃星辰 (StepFun)OfficialLowest input | CNY 1.35 | CNY 8.1 | CNY 0.27 | 2026-10-31 |
| OpenRouter | USD 0.2 | USD 1.15 | USD 0.04 | 2026-10-31 |
Metered API cost = input tokens / 1M × input rate + output tokens / 1M × output rate. At the lowest-input-rate channel, 1M input plus 250K output tokens costs approximately CNY 3.375. This excludes caching, tools, retries and other service fees; the lowest input rate does not guarantee the lowest total bill.
— means the price or date is not recorded. Cross-currency ranking uses exchange rates.
Step 3.7 Flash is a large language model by 阶跃星辰 (StepFun) with a 256K-token context window. Across the 2 API channels tracked here, input pricing ranges from $0.20–$0.20 per 1M input tokens (USD-normalized); the cheapest is 阶跃星辰 (StepFun) at ¥1.35 per 1M input tokens. The official channel (阶跃星辰 (StepFun)) charges ¥1.35 per 1M input tokens and ¥8.10 per 1M output tokens. Channels reachable from mainland China without a VPN include 阶跃星辰 (StepFun). Prices are collected daily from official provider pages and every tracked channel, then cross-checked by a data-accuracy audit.
Model performance benchmarks
Scores retain their original benchmark, version and metric. We do not combine them into a site-wide score; results from different versions are not directly comparable.
| Channel | Type | Input / 1M | Output / 1M | Rate Limit | China | vs Official | |
|---|---|---|---|---|---|---|---|
阶跃星辰 (StepFun)💰 Best Price🏢 Official | Official | ¥1.35 | ¥8.10 | - | Baseline | ||
OpenRouter4 variants | Aggregator | $0.20 | $1.15 | - | - | - | |
Show all price variants for this channelOpenRouter Auto / default routeDefault $0.20 / $1.15 per 1M default_route Cheapest endpoint: Novita $0.20 / $1.15 per 1M cheapest_endpoint Novita | stepfun/step-3.7-flash-20260528 $0.20 / $1.15 per 1M upstream_provider StepFun | stepfun/step-3.7-flash-20260528 $0.20 / $1.15 per 1M upstream_provider | |||||||
| Usage Level | Tokens/Month | 阶跃星辰 (StepFun) | OpenRouter |
|---|---|---|---|
| 🐣 Light | 0.1M in + 0.1M out | $0.08 | $0.08 |
| 📊 Medium | 1.0M in + 0.5M out | $0.78 | $0.77 |
| 🚀 Heavy | 10.0M in + 5.0M out | $7.83 | $7.75 |
| 🏢 Enterprise | 100.0M in + 50.0M out | $78.26 | $77.50 |
Frequently asked questions about step-3.7-flash
How much does the Step 3.7 Flash API cost?
The lowest input rate is CNY 1.35 per 1M tokens; output on that channel is CNY 8.1 per 1M tokens.
Which channel has the cheapest Step 3.7 Flash API?
阶跃星辰 (StepFun) has the lowest input rate: CNY 1.35 per 1M tokens. Cross-currency ranking uses exchange rates; compare output and cache prices separately.
What is the Step 3.7 Flash cache-read price?
OpenRouter: USD 0.04; 阶跃星辰 (StepFun): CNY 0.27 per 1M cache-read tokens.
When was Step 3.7 Flash pricing last updated?
Updated on 2026-10-31. This is the latest recorded price update or verification; see the table for individual channel dates.
Is there a free Step 3.7 Flash API?
No available recorded channel lists both input and output at zero. Missing prices, free cache reads or a free chat tier do not establish a free API; check provider terms for trial credits.
How do I calculate Step 3.7 Flash token costs and monthly spend?
Metered API cost = input tokens / 1M × input rate + output tokens / 1M × output rate. At the lowest-input-rate channel, 1M input plus 250K output tokens costs approximately CNY 3.375. This excludes caching, tools, retries and other service fees; the lowest input rate does not guarantee the lowest total bill.