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Orbitrage’s catalog has two access modes, and every chat model is in exactly one of them: BYOK models are still fully first-class — same routing, tracing, cost analytics, guardrails and Tools Gateway — they just need an enabled provider key. Calling one without a key returns 403 byok_key_required; there is no silent pooled fallback. See BYOK.
Provider brand does not determine access mode. OpenAI’s gpt-oss-* models (including gpt-oss-safeguard-*) and Google’s gemma-* models are open-weight — Orbitrage serves and bills those normally. Only the closed frontier lines listed above are BYOK.
Let the router pick (model: "auto") or pin any model by id. Auto routing only ever selects models your organization can actually reach, so it never returns byok_key_required.
Open-source models are addressed by their bare id — e.g. gemma-3-27b-it, not google.gemma-3-27b-it. Orbitrage maps it to the upstream id for you.
The catalog below is representative. The live, authoritative list for your account is always GET https://api.orbitrage.ai/v1/models — see List models. Each entry carries a byok_required flag so you can tell the two modes apart programmatically.

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Pricing & tiers

Prices are USD per 1M tokens (input / output).
  • For served models, that’s the upstream price; your credits are debited at that price plus the 2.5% infra fee.
  • For BYOK models, that’s the provider’s own list rate — shown for comparison only. Your provider bills you (possibly less, at your negotiated rate); Orbitrage debits nothing.

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Frontier — BYOK only

Requires an enabled Anthropic key. Requires an enabled OpenAI key. The full BYOK list also includes gpt-5.5-pro, gpt-5.4-pro, gpt-5.3, gpt-5.3-codex, gpt-5.2, gpt-5.2-codex, gpt-5.1, gpt-5, gpt-5-mini, gpt-chat-latest, gpt-4-turbo, gpt-4, gpt-3.5-turbo, o1, o1-mini, o3, o3-mini and o4-mini. Requires an enabled Google key: the gemini-* family. Requires an enabled xAI key: the grok-* family (grok-4, grok-4.3, grok-4-fast, grok-3 variants, …). claude-sonnet-5 is priced at its introductory rate of 2/2 / 10 per 1M tokens through Aug 31, 2026 (standard 3/3 / 15 after). Like Opus 4.7+/Fable 5 it uses adaptive thinking and ignores temperature/top_p — Orbitrage strips them for you. claude-fable-5 is Anthropic’s top-tier model (above Opus) — the highest-quality option in the catalog, used for the hardest reasoning and agentic tasks.

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High — served by Orbitrage

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Mid — served by Orbitrage

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Basic — served by Orbitrage

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Open source (Amazon Bedrock, served by Orbitrage)

A broad open-weights catalog, billed to your Orbitrage credits with the same 2.5% infra fee. Address each by its bare id (the engine adds the vendor prefix upstream). Vision models accept image content blocks.

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Ultra-fast (Cerebras — Pro plan only)

Cerebras runs open models on wafer-scale hardware at ~1,000–3,000 tokens/sec — near-instant responses. These are addressed by a distinct -cerebras id so they never collide with the standard (Bedrock) versions.
Cerebras models require the Pro plan. A free-plan request for one returns 403 pro_plan_required; on the Models page they’re marked Pro only and can’t be enabled. They’re also explicit-pin only — model: "auto" never routes to them.

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Image

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Audio (managed, included)

Speech-to-text and text-to-speech are offered as a managed service on Deepgram — no BYOK needed. See Audio.
The full catalog also includes the DeepSeek R1 reasoning model and the whole open-source Bedrock catalog above (served), plus the remaining GPT-5, Gemini and Grok variants (BYOK). Query /v1/models for everything enabled on your account — each entry’s byok_required flag tells you which mode it’s in.

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Cost, savings, and the infra fee

Every call records four cost figures, so you can see exactly where your money goes: The baseline lets the dashboard answer “how much did routing save me?” by comparing every routed call against a single frontier model.
cost_usd = 0 covers the LLM tokens only. If the turn invoked the managed Tools Gateway, those tool calls ran on Orbitrage’s pooled tool keys and are billed normally — so a BYOK turn’s cost is exactly its tool cost.

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Vision & multimodal

Vision-capable models accept image content blocks in the standard OpenAI format, and the router prefers one automatically when your prompt contains images. The engine also exposes image generation/editing and audio (transcription, translation, speech) endpoints — see the API reference.

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Pinning vs. aliases

  • Pin a model by passing its exact id — no scoring, straight to that model.
  • Route by passing auto (or router / default / orbitrage).
  • Model ids match flexibly — claude-sonnet-4.6 and claude-sonnet-4-6 resolve to the same model, and family names (e.g. claude-opus, grok-4) resolve to the appropriate provider and tier.
  • Pinning a BYOK model without an enabled key for its vendor fails fast with 403 byok_key_required rather than quietly routing somewhere else. Pin an open-weight id, or use auto, if you’d rather never see that error.