Choose a model to open its comparison page.
Step 3.5 Flash benchmark, API pricing, and provider data cover 85 API providers, with prices starting at $0.0010/request. Step 3.5 Flash free API options are available from 5 providers. The page also shows measured API speed and first-token latency.
Step 3.5 Flash is a fast and efficient language model, optimized for quick responses and high throughput.
Observed-capability estimates with uncertainty reported separately from independent benchmark families.
Input and output token limits for this model, plus how it ranks on long-context understanding.
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Third-party OpenRouter endpoint data, shown separately from LMSpeed measurements. Some 30-minute live performance fields only appear after syncing with an OpenRouter API key.
| Provider endpoint | Input | Output | 1d uptime | 30m latency | 30m throughput | Context / output |
|---|---|---|---|---|---|---|
SiliconFlow siliconflow/fp8 | $0.100/M | $0.300/M | — | — | — | 262.1K tokens / 65.5K tokens |
Compare Step 3.5 Flash API pricing across 80 providers. Prices range from $0.0010/request to $1998.00/M. 3173721 API offers the lowest rate at $0.0010/request. 5 providers offer free API credits or a free tier.
| Provider | Health | Model Variant | Group | Input ($/M) | Output ($/M) | Speed (t/s) | First token | Audit |
|---|---|---|---|---|---|---|---|---|
L1 100% | step-3.5-flash | default | $0.800/request | - | 79.8 t/s | 11.79 s | — | |
Dext API Free | L1 100% | step-3.5-flash | 公益 | Free | Free | — | — | — |
L1 100% | stepfun-ai/Step-3.5-Flash | default | $0.0027/request | - | — | — | — | |
L1 100% | step-3.5-flash | default | -93%$0.0066/M Cache read$0.0013/M | -93%$0.020/M | — | — | — | |
L1 100% | stepfun-ai/step-3.5-flash | 0倍倍率分组 | -97%$0.0027/M | -98%$0.0068/M | — | — | — | |
L1 100% | stepfun-ai/Step-3.5-Flash | default | $0.343/M | $1.03/M | — | — | — | |
L1 100% | step-3.5-flash | default | $0.343/M Cache read$0.069/M | $1.03/M | — | — | — | |
L1 100% | step-3.5-flash | nvidia | $0.200/M Cache read$0.040/M | $0.600/M | — | — | — | |
L1 100% | Step-3.5-Flash | 国产模型 | $0.100/M | $1.00/M | — | — | — | |
L1 100% | stepfun-ai/step-3.5-flash | default | $375.00/M | $375.00/M | — | — | — | |
L1 99% | step-3.5-flash | default | -4%$0.096/M | -4%$0.288/M | — | — | — | |
L1 99% | step-3.5-flash | default | -4%$0.096/M Cache read$0.019/M | -4%$0.288/M | — | — | — | |
L1 99% | stepfun-ai/step-3.5-flash | Free | $0.200/M | $0.500/M | — | — | — | |
L1 99% | step-3.5-flash | default | $100.00/request | - | — | — | — | |
L1 99% | step-3.5-flash | vip | $1.35/M Cache read$0.014/MCache write$0.270/MCache write 1h$0.432/M | $0.405/M | — | — | — | |
L1 99% | step-3.5-flash-2603 | vip | $1.35/M | $1.35/M | — | — | — | |
L1 99% | daipai/step-3.5-flash | 按次福利模型 | $0.0010/request | - | — | — | — | |
L1 99% | stepfun-ai/Step-3.5-Flash | default | $0.714/M | $2.14/M | — | — | — | |
L1 97% | stepfun-ai/step-3.5-flash | default | $75.00/M | $75.00/M | — | — | — | |
L1 97% | step-3.5-flash | default | $0.010/request | - | — | — | — |
