Step 3.5 Flash costs $0.090/1M input tokens and $0.300/1M output tokens as of 2026-06-27. Openrouter publishes this model with a 262K tokens context window. o10 lists Step 3.5 Flash on Together AI at routing band C2.
Last updated: 2026-06-27. Full catalog
Step 3.5 Flash costs $0.090/1M input tokens and $0.300/1M output tokens in the gateway catalog snapshot (2026-06-27). Endpoint pricing may differ by fulfillment host.
Sourced from gateway catalog snapshot.
Step 3.5 Flash is configured on Together AI. Each host maps to an upstream model ID listed in the fulfillment routes table. This model is routable through o10 eval-gated routing.
Step 3.5 Flash supports a 262K tokens context window in the gateway catalog snapshot. Context limits may vary by fulfillment host endpoint.
Gateway snapshot pricing for Step 3.5 Flash.
| Unit | Price |
|---|---|
| Input | $0.09/1M tokens |
| Output | $0.3/1M tokens |
Upstream venues configured for Step 3.5 Flash.
| Host | Upstream model ID |
|---|---|
| stepfun | together_ai/step-3.5-flash |
Eval-gated model selection for this slug.
o10 slug: step-3.5-flash. Band: C2. Routable: yes.
See [/models/routing](/models/routing) for smart aliases (o10/auto, o10/frontier, o10/squad) and [/kyi](/kyi) for governance.
Gateway catalog snapshot 2026-06-27. Fulfillment catalog synced from o10 control plane. Verify list prices against openrouter and host providers.
Step 3.5 Flash costs $0.090/1M input tokens and $0.300/1M output tokens in the gateway snapshot (2026-06-27). Verify against your provider's published pricing.
Step 3.5 Flash supports 262K tokens in the gateway catalog snapshot. Host-specific endpoints may differ.
Step 3.5 Flash (step-3.5-flash) is configured on: Together AI. Upstream model IDs are listed in the fulfillment routes section.
Yes. Step 3.5 Flash is routable at band C2. Send model: "step-3.5-flash" or use an o10 smart routing alias.
Use o10 slug "step-3.5-flash" or gateway ID "stepfun/step-3.5-flash" depending on your integration. Gateway-compatible endpoints accept OpenAI-style /v1 requests.
o10 routes Step 3.5 Flash only when per-use-case evals clear at your quality floor. Band C2 indicates cost tier. See /kyi for governance and /models/routing for smart aliases.