head to head · open source
kong vs Flexprice
kong has 44,344 GitHub stars, 5,237 forks, 200 open issues and last shipped 15 days ago. Flexprice has 6,874 stars, 956 forks, 227 open issues and last shipped 2 days ago. kong leads on adoption by 545% (44,344 vs 6,874 stars). kong is written in Lua under Apache-2.0; Flexprice is written in Go under AGPL-3.0. kong has attracted 12% as many forks as stars, Flexprice 14%. Flexprice was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| kong | Flexprice | |
|---|---|---|
| GitHub stars | ★ 44K | ★ 6.9K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Lua | Go |
| Last push | 2026-10-19 | 2026-11-01 |
| Forks | ⑂ 5.2K | ⑂ 956 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick kong if
- You weight community size — 44K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Lua
- You value the larger contributor base for long-term maintenance
pick Flexprice if
- You want the Flexprice feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Go
- You evaluated both and Flexprice fits your workflow better
About kong
[![][kong logo]][kong url] [![Build Status][badge action image]][badge action url] Kong or Kong Gateway is a cloud native, platform agnostic, scalable API 𖧹 LLM 𖧹 MCP Gateway distinguished for its high performance and extensibility via plugins. It also provides advanced AI traffic capabilities with multi LLM support, semantic security, MCP traffic security and analytics, and more. By providing functionality for proxying, routing, load balancing, health checking, authentication (and more), Kong serves as the central layer for orchestrating microservices or conventional API traffic and agentic LLM and MCP as…
About Flexprice
Monetization Infrastructure Built for AI Native Companies Flexprice lets AI native and SaaS teams operate usage based, credit based, and hybrid pricing with real time metering and reporting that scales as your product evolves. Docs • Demo • Website • LinkedIn • X • Slack Community Open architecture The Flexprice core (metering, credits, pricing, billing) has an open and composable design. Your application, whether it's running backend APIs, AI agents, or custom workflows, can send usage data to Flexprice. You can directly stream data from data warehouses or analytics pipelines as well. At the core, Flexprice…
read the full Flexprice overview →
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Frequently asked questions
Is kong or Flexprice more popular?
kong has 44,344 GitHub stars and Flexprice has 6,874. kong has the larger community by that measure.
Are kong and Flexprice free?
Both are open source. kong is licensed under Apache-2.0 and Flexprice under AGPL-3.0. Neither carries a licence fee.
What is the difference between kong and Flexprice?
kong is written in Lua and Flexprice 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, kong or Flexprice?
Choose kong if you want the larger community (44,344 stars) or its Apache-2.0 licence terms. Choose Flexprice if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.