Orca Agent Engine
Open Apache-2.0 runtime to build, run, and govern managed agents with choice of harness (Claude Agent SDK, Codex, Pi) and model; open-sourced Oct 6, 2026 (Developer Preview).
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About Orca Agent Engine
Orca Agent Engine is listed in our frameworks category and is aimed at builders. Open Apache-2.0 runtime to build, run, and govern managed agents with choice of harness (Claude Agent SDK, Codex, Pi) and model; open-sourced Oct 6, 2026 (Developer Preview). Pricing, as the maker states it: Open source (Apache 2.0). Maturity: Developer Preview. We last checked the official link on 2026-10-14.
What is Orca Agent Engine?
Orca Agent Engine is an open, Apache-2.0, self-hosted implementation of the managed-agents API. You define agents, run them in sessions and stream each session's events.
It follows Anthropic's Managed Agents beta closely enough that the official Anthropic SDKs can use it by changing their base URL, while agents, sessions, files, memory and credentials stay in your infrastructure. Our listing notes a choice of harness (Claude Agent SDK, Codex, Pi) and a Developer Preview released Oct 6, 2026.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: runorca.ai.
Who is Orca Agent Engine for?
Teams who want managed-agent style APIs but need to run them on their own infrastructure.
Orca Agent Engine at a glance
- Open source: Yes (Apache License 2.0)
- GitHub: orca-ae/orca-agent-engine · 6 stars (as of Oct 21, 2026)
Key features
- Self-hosted managed-agents API
- Compatible with Anthropic SDKs via base URL
- Sessions with streamed events
- Choice of harness and model
- Apache 2.0; developer preview
Orca Agent Engine FAQ
What is Orca Agent Engine?
Orca Agent Engine is an open, Apache-2.0, self-hosted implementation of the managed-agents API. You define agents, run them in sessions and stream each session's events.
Who is Orca Agent Engine for?
Teams who want managed-agent style APIs but need to run them on their own infrastructure.
Is Orca Agent Engine free?
Orca Agent Engine's pricing, as the maker states it: Open source (Apache 2.0). Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is Orca Agent Engine open source?
Yes. Orca Agent Engine is released under the Apache License 2.0, according to its GitHub repository.
What are alternatives to Orca Agent Engine?
Similar tools include OpenAI Agents SDK (Python), Hermes Agent (Nous Research), Ruflo, Agentlas, Agentic Context Engine and Tambo.
Orca Agent Engine ratings and reviews
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Orca Agent Engine alternatives
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OpenAI Agents SDK (Python)
OpenAI's Python SDK for building multi-agent workflows; v0.23.0/0.23.1 released Oct 1-2.
Hermes Agent (Nous Research)
Open-source agent harness; v0.21.7 stable shipped Oct 12, v0.22.0 RCs Oct 13-14.
Ruflo
Open-source multi-agent meta-harness for Claude Code, Codex, and MCP clients; Oct 13 release adds Mods (mission workflows) and a single control plane with human approval.
Agentlas
A local-first agent OS that keeps specialist agents in a hub and spins up a temporary orchestrator for each task, with reusable methods and your choice of model and host.
Agentic Context Engine
Engine that lets agents learn from their own experience.
Tambo
Generative UI SDK for React that lets agents render components.
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💲 Estimate API cost: compare per-request and monthly costs for GPT, Claude, Gemini and Grok models.
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