The deciding difference is operational: Omnigent can run on infrastructure you control, Claude Agent SDK cannot. If that constraint is real for you, it settles the choice before anything else is considered.
The Claude Code loop as a library, for agents that are not about code.
Same harness as Claude Code, but you own the entrypoint and the tool surface.
Open-source meta-harness that orchestrates Claude Code, Codex, Cursor, OpenCode, Hermes and Pi from one session, on any device.
A common orchestration layer over other harnesses rather than a harness of its own — swap Claude Code/Codex/Cursor/etc. in and out, enforce policies, and run sessions in cloud sandboxes (Modal, Daytona, E2B and others).
| Claude Agent SDK | Omnigent | |
|---|---|---|
| Licence | Proprietary | Open source |
| Pricing | usage based | open source |
| Self-hostable | No | Yes |
| Languages | TypeScript, Python | Any language |
| Install | npm install @anthropic-ai/claude-agent-sdk | curl -fsSL https://raw.githubusercontent.com/omnigent-ai/omnigent/main/scripts/install_oss.sh | sh |
| Keys required | ANTHROPIC_API_KEY | ANTHROPIC_API_KEY, OPENAI_API_KEY |
The deciding difference is operational: Omnigent can run on infrastructure you control, Claude Agent SDK cannot. If that constraint is real for you, it settles the choice before anything else is considered. Claude Agent SDK: The Claude Code loop as a library, for agents that are not about code. Omnigent: Open-source meta-harness that orchestrates Claude Code, Codex, Cursor, OpenCode, Hermes and Pi from one session, on any device.
Claude Agent SDK is a hosted service only. Omnigent can run on your own infrastructure.
Claude Agent SDK is proprietary (usage based). Omnigent is open source (open source).
Every page here answers to Accept: text/markdown and returns the same content at roughly a tenth the tokens. No separate site, no toggle — same URL.
curl -s -H "Accept: text/markdown" https://newagent.build/compare/claude-agent-sdk-vs-omnigent