head to head · open source
ponytail vs Envoy AI Gateway
ponytail has 182,779 GitHub stars, 10,094 forks, 270 open issues and last shipped 5 days ago. Envoy AI Gateway has 2,334 stars, 445 forks, 285 open issues and last shipped 5 days ago. ponytail leads on adoption by 7,731% (182,779 vs 2,334 stars). ponytail is written in JavaScript under MIT; Envoy AI Gateway is written in Go under Apache-2.0. ponytail has attracted 6% as many forks as stars, Envoy AI Gateway 19%. Envoy AI Gateway 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
| ponytail | Envoy AI Gateway | |
|---|---|---|
| GitHub stars | ★ 183K | ★ 2.3K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Go |
| Last push | 2026-10-29 | 2026-10-29 |
| Forks | ⑂ 10K | ⑂ 445 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ponytail if
- You weight community size — 183K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick Envoy AI Gateway if
- You want the Envoy AI Gateway feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and Envoy AI Gateway fits your workflow better
About ponytail
Ponytail He says nothing. He writes one line. It works. 54% less code (up to 94%) · 20% cheaper · 27% faster · 100% safe Measured on real Claude Code sessions editing a real open source repo (FastAPI + React), against the same agent with no skill. 54% is the mean across 12 feature tasks (Haiku 4.5, n=4); it reaches 94% where an agent over builds (a date picker) and is near zero where the code is already minimal. ponytail keeps every safety guard while a bare "write one liners" prompt drops one. (The earlier single shot benchmark reported 80 94% as a flat figure; against a fair agentic…
read the full ponytail overview →
About Envoy AI Gateway
The open source control plane for AI and agent traffic, powered by Envoy. An Agentic AI Foundation project. Formerly Envoy AI Gateway . Documentation · Quickstart · Blog · Release Notes · Talks Agent Router Agent Router gives application teams one consistent, OpenAI compatible API for every model and tool, from hosted providers to self hosted inference and MCP servers. Platform teams keep credentials, routing, quotas, failover, and usage attribution in one place, enforced by Envoy and Envoy Gateway. Agent Router controls. Envoy carries. Formerly Envoy AI Gateway Envoy AI Gateway is now Agent Router , an Agentic…
read the full Envoy AI Gateway overview →
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Frequently asked questions
Is ponytail or Envoy AI Gateway more popular?
ponytail has 182,779 GitHub stars and Envoy AI Gateway has 2,334. ponytail has the larger community by that measure.
Are ponytail and Envoy AI Gateway free?
Both are open source. ponytail is licensed under MIT and Envoy AI Gateway under Apache-2.0. Neither carries a licence fee.
What is the difference between ponytail and Envoy AI Gateway?
ponytail is written in JavaScript and Envoy AI Gateway in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ponytail or Envoy AI Gateway?
Choose ponytail if you want the larger community (182,779 stars) or its MIT licence terms. Choose Envoy AI Gateway if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.