StepFunopen weightsreasoningStep 3.7 Flash pricing
$0.20 per 1M input tokens and $1.15 per 1M output tokens. In real work that is 0.19¢ per chat answer and 0.40¢ to summarize a 20-page PDF.
What Step 3.7 Flash costs per task
Token counts estimated from a measured model of the same lab (Gemini 3.8 Flash), rescaled by tokenizer. Reasoning tokens are billed as output.
| Task | Cost | Tokens used | Price rank | Basis |
|---|---|---|---|---|
| Answer a chat question | 0.19¢$1.90 / 1,000 | 35 in · 801 out · 843 reasoning | 152 of 336 | estimated |
| Reply to a customer email | 0.07¢$0.69 / 1,000 | 275 in · 130 out · 424 reasoning | 134 of 336 | estimated |
| Write a 1,500-word blog post | 0.42¢$4.18 / 1,000 | 52 in · 2,666 out · 964 reasoning | 111 of 336 | estimated |
| Write 10 product descriptions | 0.35¢$3.47 / 1,000 | 298 in · 1,146 out · 1,817 reasoning | 115 of 336 | estimated |
| Translate 1,000 words | 0.54¢$5.42 / 1,000 | 1,330 in · 1,319 out · 3,167 reasoning | 142 of 336 | estimated |
| Proofread one page (500 words) | 0.14¢$1.42 / 1,000 | 718 in · 664 out · 443 reasoning | 119 of 336 | estimated |
| Summarize a 20-page PDF | 0.40¢$4.04 / 1,000 | 12,961 in · 544 out · 713 reasoning | 109 of 336 | estimated |
| Extract data from an invoice | 0.18¢$1.81 / 1,000 | 459 in · 548 out · 943 reasoning | 146 of 336 | estimated |
| Analyze a 200-row spreadsheet | 1.1¢$10.64 / 1,000 | 6,413 in · 1,035 out · 7,100 reasoning | 112 of 336 | estimated |
| Answer from 5 retrieved documents (RAG) | 0.32¢$3.24 / 1,000 | 3,670 in · 680 out · 1,499 reasoning | 137 of 336 | estimated |
| Classify 100 support tickets | 0.79¢$7.92 / 1,000 | 1,421 in · 580 out · 6,059 reasoning | 187 of 336 | estimated |
| Review 500 lines of code | 0.35¢$3.48 / 1,000 | 5,297 in · 2,109 out | 47 of 336 | estimated |
| Write a SQL query | 0.19¢$1.87 / 1,000 | 137 in · 555 out · 1,043 reasoning | 149 of 336 | estimated |
| Run a 50-step coding agent | 17¢$174 / 1,000 | 2,233,025 in · 14,970 out · 47,150 reasoning | 84 of 336 | modeled |
Price at every provider
List prices per 1M tokens (input / output) at each host serving Step 3.7 Flash through OpenRouter today. Hosts can differ in quantization, context and speed.
| Provider | Input / output | Cached input | Context | Uptime |
|---|---|---|---|---|
 Novitafp8 | $0.20 / $1.15 | $0.04 | 262K | 100% |
| S StepFunfp8 | $0.20 / $1.15 | $0.04 | 256K | 100% |
Price history
First seen in our price history on May 29, 2026 at $0.20 input / $1.15 output. The list price has not changed since.
FAQ
How much does Step 3.7 Flash cost?
Step 3.7 Flash costs $0.20 per 1 million input tokens and $1.15 per 1 million output tokens, with cached input at $0.04 (list price on Oct 18, 2026). In practice one chat answer costs about 0.19¢ and summarizing a 20-page PDF about 0.40¢.
Where is Step 3.7 Flash cheapest?
Among 2 providers we track, the lowest list price today is at Novita: $0.20 input and $1.15 output per 1M tokens.
Does Step 3.7 Flash charge for reasoning tokens?
Yes. Reasoning (thinking) tokens are billed as output tokens. That is why the cost per task can be much higher than the visible answer suggests - our task costs include them.
Is the Step 3.7 Flash cost per task measured or estimated?
Estimated: Step 3.7 Flash was not run directly. Tokens come from Gemini 3.8 Flash and are rescaled by the tokenizer of StepFun. Real usage can differ.