StepFun

Step 3.7 Flash

Name: Step 3.7 Flash
Price: Input $0.04 cache hit / $0.20 cache miss; output $1.15 per 1M tokens
Availability: LimitedAvailability
Rating: 4.5 (0 reviews)

Step 3.7 Flash is StepFun's flagship multimodal reasoning model. The docs describe it as a 196B-parameter / 11B-activation sparse MoE model with 256K context, native image and video understanding, high-throughput reasoning, tool calling, complex reasoning and three reasoning-effort levels. The page also exposes an OpenAI-compatible Chat Completions API, pricing at $0.04 input cache hit / $0.20 cache miss / $1.15 output per 1M tokens, and framework support for Claude Code, OpenClaw, Hermes Agent, Cline, Roo Code, Kilo Code and Open Code.

Partially availableFull English UIPublic APIPaid

Editorial verdict

Best for

Teams evaluating a flagship Chinese multimodal reasoning model for agentic coding, tool use, deep research and vision/video-aware workflows.

Avoid if

Avoid it if you only need a cheap text-only model or a consumer chat product.

Why it matters

Step 3.7 Flash is the current headline model on StepFun's platform homepage, so it deserves a dedicated profile instead of being buried inside the broader platform entry.

Trust: 4/4 sources verified, recently checkedCoverage: 100/100

Pricing

Input $0.04 cache hit / $0.20 cache miss; output $1.15 per 1M tokens

Payment

Account balance, Free credit first, Paid balance

Commercial use

Commercial use should follow the current product, API, model license and billing terms.

Privacy

Review prompt, file, media upload, retention and training-use terms before sensitive workloads.

Use-case fit

Agentic coding workflows

Strong

Use it when code generation, file edits, terminal actions and tool orchestration need one multimodal model.

Vision and video reasoning

Strong

The model handles images and video natively, so it fits UI inspection, chart reading and multimodal analysis.

Deep research and planning

Medium

Reasoning effort controls make it suitable for longer planning and complex analysis tasks.

Global user checklist

RegistrationPartialPublic docs and homepage are available; signup and quota behavior should still be tested from the target region.

English UIConfirmedThe model page and docs are English-facing.

API and docsConfirmedThe docs expose chat-completions, reasoning effort, quickstart, cookbook and framework support details.

International paymentPartialPricing is public, but account-level quota and billing behavior still need validation.

Data and privacy termsConfirmedThe docs link user privacy, terms of service and data-processing agreement pages.

Model names, quotas, release status, regional access and commercial terms can change quickly; recheck official sources before procurement or production use.

Pros

- Native image and video understanding inside the same model
- High-throughput reasoning and reliable tool calling
- 256K context with low/medium/high reasoning effort controls
- Documented support for mainstream coding and agent frameworks

Cons

- Premium output pricing can add up on long generation runs
- Regional signup and quota behavior still need direct account checks
- Homepage and docs are moving quickly, so model naming and access should be rechecked

Decision paths

stepfun-open-platform

step-plan

qwen-cloud-token-plan

minimax-api

zhipu-glm

Sources

StepFun Open Platform

official · en · verified 2026-05-29

Confirms the homepage highlight for Step 3.7 Flash and the developer platform entry point.

Step 3.7 Flash model page

docs · en · verified 2026-05-29

Documents model architecture, context length, reasoning effort, pricing, API shape and framework support.

Step 3.7 Flash quickstart

docs · en · verified 2026-05-29

Confirms the multimodal quickstart for images, video, local files and reasoning-effort control.

StepFun pricing and rate limits

pricing · en · verified 2026-05-29

Documents model pricing and account limits.

Last checked: 2026-05-29

Reviews

Step 3.7 Flash

Partially availableFull English UIPublic APIPaid

Editorial verdict

Best for

Teams evaluating a flagship Chinese multimodal reasoning model for agentic coding, tool use, deep research and vision/video-aware workflows.

Avoid if

Avoid it if you only need a cheap text-only model or a consumer chat product.

Why it matters

Step 3.7 Flash is the current headline model on StepFun's platform homepage, so it deserves a dedicated profile instead of being buried inside the broader platform entry.

Trust: 4/4 sources verified, recently checkedCoverage: 100/100

Pricing

Input $0.04 cache hit / $0.20 cache miss; output $1.15 per 1M tokens

Payment

Account balance, Free credit first, Paid balance

Commercial use

Commercial use should follow the current product, API, model license and billing terms.

Privacy

Review prompt, file, media upload, retention and training-use terms before sensitive workloads.

Use-case fit

Agentic coding workflows

Strong

Use it when code generation, file edits, terminal actions and tool orchestration need one multimodal model.

Vision and video reasoning

Strong

The model handles images and video natively, so it fits UI inspection, chart reading and multimodal analysis.

Deep research and planning

Medium

Reasoning effort controls make it suitable for longer planning and complex analysis tasks.

Global user checklist

RegistrationPartialPublic docs and homepage are available; signup and quota behavior should still be tested from the target region.

English UIConfirmedThe model page and docs are English-facing.

API and docsConfirmedThe docs expose chat-completions, reasoning effort, quickstart, cookbook and framework support details.

International paymentPartialPricing is public, but account-level quota and billing behavior still need validation.

Data and privacy termsConfirmedThe docs link user privacy, terms of service and data-processing agreement pages.

Model names, quotas, release status, regional access and commercial terms can change quickly; recheck official sources before procurement or production use.

Pros

- Native image and video understanding inside the same model
- High-throughput reasoning and reliable tool calling
- 256K context with low/medium/high reasoning effort controls
- Documented support for mainstream coding and agent frameworks

Cons

- Premium output pricing can add up on long generation runs
- Regional signup and quota behavior still need direct account checks
- Homepage and docs are moving quickly, so model naming and access should be rechecked

Decision paths

stepfun-open-platform

step-plan

qwen-cloud-token-plan

minimax-api

zhipu-glm

Sources

StepFun Open Platform

official · en · verified 2026-05-29

Confirms the homepage highlight for Step 3.7 Flash and the developer platform entry point.

Step 3.7 Flash model page

docs · en · verified 2026-05-29

Documents model architecture, context length, reasoning effort, pricing, API shape and framework support.

Step 3.7 Flash quickstart

docs · en · verified 2026-05-29

Confirms the multimodal quickstart for images, video, local files and reasoning-effort control.

StepFun pricing and rate limits

pricing · en · verified 2026-05-29

Documents model pricing and account limits.

Last checked: 2026-05-29