head to head · open source
Tailcall vs antirion
Tailcall has 7,633 GitHub stars, 1,456 forks, 45 open issues and last shipped yesterday. antirion has 659 stars, 15 forks, 6 open issues and last shipped 4 days ago. Tailcall leads on adoption by 1,058% (7,633 vs 659 stars). Tailcall is written in Rust under Apache-2.0; antirion is written in Rust under Apache-2.0. Tailcall has attracted 19% as many forks as stars, antirion 2%. Tailcall was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Tailcall | antirion | |
|---|---|---|
| GitHub stars | ★ 7.6K | ★ 659 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Rust | Rust |
| Last push | 2026-11-03 | 2026-10-31 |
| Forks | ⑂ 1.5K | ⑂ 15 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Tailcall if
- You weight community size — 7.6K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick antirion if
- You want the antirion feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and antirion fits your workflow better
About Tailcall
⚒️ Forge: AI Enhanced Terminal Development Environment A comprehensive coding agent that integrates AI capabilities with your development environment curl fsSL sh Table of Contents Quickstart Usage Examples Why Forge? How Forge Works: Three Modes Interactive Mode (TUI) One Shot CLI Mode ZSH Plugin Mode ( : prefix) ZSH Plugin: The : Prefix System Agents Sending Prompts Attaching Files Conversation Management Git Integration Shell Command Tools Session & Configuration Skills Customizing Agent Behavior Semantic Search (Workspace) Quick Reference: All : Commands Command Line Options Advanced Configuration Provider…
read the full Tailcall overview →
About antirion
Antirion The fastest open source AI gateway. One Rust binary, with the admin console built in, between your apps and every model provider. Performance · Getting started · Deploy · Features · Architecture · Docs [!TIP] Faster than Bifrost and LiteLLM. On the same dedicated machine, Antirion adds a fraction of Bifrost's overhead with a fraction of its CPU and memory, and keeps serving at rates where LiteLLM fails. See the benchmark. Why Antirion The fastest gateway we have measured. Sub millisecond overhead at thousands of requests per second on 4 vCPUs, and several times the throughput of the next fastest gateway…
read the full antirion overview →
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Frequently asked questions
Is Tailcall or antirion more popular?
Tailcall has 7,633 GitHub stars and antirion has 659. Tailcall has the larger community by that measure.
Are Tailcall and antirion free?
Both are open source. Tailcall is licensed under Apache-2.0 and antirion under Apache-2.0. Neither carries a licence fee.
What is the difference between Tailcall and antirion?
Tailcall is written in Rust and antirion in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Tailcall or antirion?
Choose Tailcall if you want the larger community (7,633 stars) or its Apache-2.0 licence terms. Choose antirion if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.