Files
openclaw/docs/providers/stepfun.md
Tianning Li 583ca34bf8 feat(stepfun): add step-3.7-flash model (#88082)
* feat(stepfun): add step-3.7-flash model and make it default

* fix(stepfun): set step-3.7-flash cacheRead cost to 0.04

* fix(stepfun): raise step-3.7-flash maxTokens to context limit

Output was artificially capped at 65536; StepFun docs set max_tokens
default to INF, bounded only by the 256K context window. Raise
step-3.7-flash maxTokens to 262144 on both stepfun and stepfun-plan,
matching contextWindow. Per models.dev anomalyco/models.dev#1903.
step-3.5-flash entries unchanged.

* fix(stepfun): zero step-plan step-3.7-flash cost for plan billing

Step Plan endpoint bills per subscription plan, not per token, matching
the sibling stepfun-plan/step-3.5-flash and step-3.5-flash-2603 entries
which already carry zero cost. Standard stepfun/step-3.7-flash keeps its
per-token rate. Per models.dev anomalyco/models.dev#1903, whose step-plan
providers omit cost entirely.

* docs(changelog): note StepFun 3.7 support

* style(stepfun): format provider table

* fix(stepfun): forward reasoning effort

* fix(stepfun): scope reasoning compat to 3.7

* test(stepfun): keep 3.5 reasoning compat unchanged

* fix(stepfun): carry off fallback through agent turns

* fix(stepfun): use documented token limit field

* fix(stepfun): match chat completions contract

* chore(stepfun): keep changelog release-owned

---------

Co-authored-by: Tianning Li <litianning@stepfun.com>
Co-authored-by: Peter Steinberger <steipete@gmail.com>
2026-07-09 07:14:46 +01:00

292 lines
10 KiB
Markdown

---
summary: "Use StepFun models with OpenClaw"
read_when:
- You want StepFun models in OpenClaw
- You need StepFun setup guidance
title: "StepFun"
---
StepFun ships as an external official plugin (`@openclaw/stepfun-provider`) with two provider ids:
- `stepfun` for the standard endpoint
- `stepfun-plan` for the Step Plan endpoint
<Warning>
Standard and Step Plan are **separate providers** with different endpoints and model ref prefixes (`stepfun/...` vs `stepfun-plan/...`). Use a China key with the `.com` endpoints and a global key with the `.ai` endpoints.
</Warning>
## Install plugin
```bash
openclaw plugins install @openclaw/stepfun-provider
openclaw gateway restart
```
## Region and endpoint overview
| Endpoint | China (`.com`) | Global (`.ai`) |
| --------- | -------------------------------------- | ------------------------------------- |
| Standard | `https://api.stepfun.com/v1` | `https://api.stepfun.ai/v1` |
| Step Plan | `https://api.stepfun.com/step_plan/v1` | `https://api.stepfun.ai/step_plan/v1` |
Auth env var: `STEPFUN_API_KEY`
## Built-in catalog
Standard (`stepfun`):
| Model ref | Context | Max output | Notes |
| ------------------------ | ------- | ---------- | ------------------------------ |
| `stepfun/step-3.5-flash` | 262,144 | 65,536 | Default standard model |
| `stepfun/step-3.7-flash` | 262,144 | 262,144 | Multimodal image input support |
Step Plan (`stepfun-plan`):
| Model ref | Context | Max output | Notes |
| ---------------------------------- | ------- | ---------- | ------------------------------ |
| `stepfun-plan/step-3.5-flash` | 262,144 | 65,536 | Default Step Plan model |
| `stepfun-plan/step-3.7-flash` | 262,144 | 262,144 | Multimodal image input support |
| `stepfun-plan/step-3.5-flash-2603` | 262,144 | 65,536 | Additional Step Plan model |
## Getting started
<Tabs>
<Tab title="Standard">
Best for general-purpose use via the standard StepFun endpoint.
<Steps>
<Step title="Choose your endpoint region">
| Auth choice | Endpoint | Region |
| -------------------------------- | ----------------------------- | -------------- |
| `stepfun-standard-api-key-intl` | `https://api.stepfun.ai/v1` | International |
| `stepfun-standard-api-key-cn` | `https://api.stepfun.com/v1` | China |
</Step>
<Step title="Run onboarding">
```bash
openclaw onboard --auth-choice stepfun-standard-api-key-intl
```
China endpoint:
```bash
openclaw onboard --auth-choice stepfun-standard-api-key-cn
```
</Step>
<Step title="Non-interactive alternative">
```bash
openclaw onboard --auth-choice stepfun-standard-api-key-intl \
--stepfun-api-key "$STEPFUN_API_KEY"
```
</Step>
<Step title="Verify models are available">
```bash
openclaw models list --provider stepfun
```
</Step>
</Steps>
Default model: `stepfun/step-3.5-flash`
Alternate model: `stepfun/step-3.7-flash`
</Tab>
<Tab title="Step Plan">
Best for the Step Plan reasoning endpoint.
<Steps>
<Step title="Choose your endpoint region">
| Auth choice | Endpoint | Region |
| ------------------------------ | ------------------------------------------ | -------------- |
| `stepfun-plan-api-key-intl` | `https://api.stepfun.ai/step_plan/v1` | International |
| `stepfun-plan-api-key-cn` | `https://api.stepfun.com/step_plan/v1` | China |
</Step>
<Step title="Run onboarding">
```bash
openclaw onboard --auth-choice stepfun-plan-api-key-intl
```
China endpoint:
```bash
openclaw onboard --auth-choice stepfun-plan-api-key-cn
```
</Step>
<Step title="Non-interactive alternative">
```bash
openclaw onboard --auth-choice stepfun-plan-api-key-intl \
--stepfun-api-key "$STEPFUN_API_KEY"
```
</Step>
<Step title="Verify models are available">
```bash
openclaw models list --provider stepfun-plan
```
</Step>
</Steps>
Default model: `stepfun-plan/step-3.5-flash`
Alternate models: `stepfun-plan/step-3.7-flash`, `stepfun-plan/step-3.5-flash-2603`
</Tab>
</Tabs>
A single auth flow writes region-matched profiles for both `stepfun` and `stepfun-plan`, so both surfaces are discovered together after one onboarding run.
## Advanced configuration
<AccordionGroup>
<Accordion title="Full config: Standard provider">
```json5
{
env: { STEPFUN_API_KEY: "your-key" },
agents: { defaults: { model: { primary: "stepfun/step-3.5-flash" } } },
models: {
mode: "merge",
providers: {
stepfun: {
baseUrl: "https://api.stepfun.ai/v1",
api: "openai-completions",
apiKey: "${STEPFUN_API_KEY}",
models: [
{
id: "step-3.7-flash",
name: "Step 3.7 Flash",
reasoning: true,
input: ["text", "image"],
thinkingLevelMap: { off: "low", minimal: "low", xhigh: "high", max: "high" },
cost: { input: 0.2, output: 1.15, cacheRead: 0.04, cacheWrite: 0 },
contextWindow: 262144,
maxTokens: 262144,
compat: {
supportsStore: false,
supportsDeveloperRole: false,
supportsUsageInStreaming: false,
supportsReasoningEffort: true,
supportsStrictMode: false,
supportedReasoningEfforts: ["low", "medium", "high"],
maxTokensField: "max_tokens",
reasoningEffortMap: {
off: "low",
none: "low",
minimal: "low",
low: "low",
medium: "medium",
high: "high",
xhigh: "high",
adaptive: "high",
max: "high",
},
},
},
{
id: "step-3.5-flash",
name: "Step 3.5 Flash",
reasoning: true,
input: ["text"],
cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
contextWindow: 262144,
maxTokens: 65536,
},
],
},
},
},
}
```
</Accordion>
<Accordion title="Full config: Step Plan provider">
```json5
{
env: { STEPFUN_API_KEY: "your-key" },
agents: { defaults: { model: { primary: "stepfun-plan/step-3.5-flash" } } },
models: {
mode: "merge",
providers: {
"stepfun-plan": {
baseUrl: "https://api.stepfun.ai/step_plan/v1",
api: "openai-completions",
apiKey: "${STEPFUN_API_KEY}",
models: [
{
id: "step-3.7-flash",
name: "Step 3.7 Flash",
reasoning: true,
input: ["text", "image"],
thinkingLevelMap: { off: "low", minimal: "low", xhigh: "high", max: "high" },
cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
contextWindow: 262144,
maxTokens: 262144,
compat: {
supportsStore: false,
supportsDeveloperRole: false,
supportsUsageInStreaming: false,
supportsReasoningEffort: true,
supportsStrictMode: false,
supportedReasoningEfforts: ["low", "medium", "high"],
maxTokensField: "max_tokens",
reasoningEffortMap: {
off: "low",
none: "low",
minimal: "low",
low: "low",
medium: "medium",
high: "high",
xhigh: "high",
adaptive: "high",
max: "high",
},
},
},
{
id: "step-3.5-flash",
name: "Step 3.5 Flash",
reasoning: true,
input: ["text"],
cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
contextWindow: 262144,
maxTokens: 65536,
},
{
id: "step-3.5-flash-2603",
name: "Step 3.5 Flash 2603",
reasoning: true,
input: ["text"],
cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
contextWindow: 262144,
maxTokens: 65536,
},
],
},
},
},
}
```
</Accordion>
<Accordion title="Notes">
- `step-3.7-flash` accepts text and image input through OpenClaw. StepFun's API also supports video, which is not yet a model input modality in OpenClaw.
- Step 3.7 supports `low`, `medium`, and `high` reasoning effort. Because the model has no non-reasoning mode, `/think off` maps to `low`.
- `step-3.5-flash-2603` is currently exposed only on `stepfun-plan`.
- Use `openclaw models list` and `openclaw models set <provider/model>` to inspect or switch models.
</Accordion>
</AccordionGroup>
## Related
<CardGroup cols={2}>
<Card title="Model providers" href="/concepts/model-providers" icon="layers">
Overview of all providers, model refs, and failover behavior.
</Card>
<Card title="Configuration reference" href="/gateway/configuration-reference" icon="gear">
Full config schema for providers, models, and plugins.
</Card>
<Card title="Models CLI" href="/concepts/models" icon="brain">
How to choose and configure models.
</Card>
<Card title="StepFun Platform" href="https://platform.stepfun.com" icon="globe">
StepFun API key management and documentation.
</Card>
</CardGroup>