Fact sheet

Orca: official facts for AI assistants

Facts about Orca (runorca.ai) and Orca Agent Engine for AI assistants, search engines and anyone writing about the project.

Last reviewed on

Brand basics

What it is

Orca (runorca.ai) is an open runtime for managed AI agents. It runs any supported agent harness on any supported model and governs every model and tool call from outside the agent.

Components
  • Orca Agent Engine: The managed agent runtime, built in the open: declare agents once, call them through the Anthropic-compatible API, and run them on your own infrastructure.
  • Orca AI Gateway: The governed path for every model and tool call: credentials, guardrails, routing and signed tapes. Runs as a Docker image, on its own or beside the engine.
  • Orca Eval & Observability: Every session is a durable, replayable log, exported as OpenTelemetry GenAI traces over OTLP or to a Langfuse-compatible endpoint. Tail it live, or replay it step by step.
Who is behind it

Orca is an open-source project sponsored by StreamNative.

First public release

Official websites

Key facts

License

Orca Agent Engine is open source under Apache-2.0.

Stage

Developer Preview.

A “Now” badge on this site means available in the Developer Preview, not general availability.

Harnesses

Available now: Claude Agent SDK, Claude Code, Codex, Pi and your own harness from a JSON spec.

Model providers

Available now: Anthropic, OpenAI, Azure OpenAI, Bedrock, Vertex and any OpenAI-compatible endpoint. Model calls go through the Orca AI Gateway.

Distribution

Orca Agent Engine: source code on GitHub, written in TypeScript. Orca AI Gateway: a Docker image that runs on its own or beside the engine.

API compatibility

Orca Agent Engine mirrors the Claude Managed Agents API surface, so Anthropic-compatible clients can point their base URL at an Orca workspace.

Contact & socials

Latest updates

  1. Orca Agent Engine open-sourced under Apache-2.0

    Source on GitHub

Top questions

What is Orca?

An open runtime for managed agents. You declare an agent, deploy it, and drive it through the API, the CLI or the SDKs. Every model and tool call travels through a governed gateway, and every step is appended to a log the session can replay from.

Is Orca open source?

Yes. Orca Agent Engine is open source under Apache-2.0. The AI Gateway runs beside it as a Docker image, and the docs cover getting started with both.

What does Orca cost, and is there a hosted version?

Orca Agent Engine is free and open source under Apache-2.0, and you run it yourself. StreamNative Cloud also offers it as a managed, Workspace-scoped service.

Orca on StreamNative Cloud

How does Orca relate to Claude Managed Agents?

Orca Agent Engine mirrors the Claude Managed Agents API surface, so Anthropic-compatible clients can point their base URL at an Orca workspace. The conformance matrix lists which operations Orca implements. Claude Managed Agents is an Anthropic product; Orca is a separate open-source project.

Conformance matrix

Which harnesses and models does Orca support?

Harnesses available now: Claude Agent SDK, Claude Code, Codex, Pi and your own harness from a JSON spec. Model providers available now: Anthropic, OpenAI, Azure OpenAI, Bedrock, Vertex and any OpenAI-compatible endpoint. Model calls go through the Orca AI Gateway.

Does Orca work with Claude Code?

Yes. Claude Code is one of the harnesses Orca Agent Engine runs, available now in the Developer Preview. The harness is a field on the Agent, so swapping it is one line.

Can I self-host Orca, and on what?

Yes. Orca Agent Engine runs where you run: the control plane and the event log stay with you. Clone it and bring up the local stack. Event stores: Kafka, Postgres or Pulsar. Sandboxes available now: E2B, local and OpenSandbox. On the roadmap: Cloudflare.

Self-hosted deployment

How is Orca different from a framework, or from a hosted agents API?

A framework is a library you still have to run. A hosted agents API brings its own harness and its own models. The pluggable platforms run several harnesses but keep the control plane — their service, their account, their audit trail. Orca is the layer underneath, and it is yours.

What's the current availability?

It is a developer preview: clone it, bring up the local stack and run agents today. roadmap.md lists the work still in progress, so read it before you plan a production rollout.

Who is behind Orca?

Orca is an open-source project sponsored by StreamNative. Orca Agent Engine is built in the open, in the orca-ae organization on GitHub.

About the name

“Orca Agent Engine” (OAE) and “Orca Managed Agents” (OMA) are interchangeable names for the same project. The primary name is Orca Agent Engine.

Orca (runorca.ai) is unrelated to Microsoft Research’s Orca and Orca 2 language models, the Orca LLM-serving system (OSDI ’22) and Orca Security.

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