head to head · open source
openapi-generator vs gpt-load
openapi-generator has 26,752 GitHub stars, 7,678 forks, 5,752 open issues and last shipped 4 days ago. gpt-load has 6,865 stars, 759 forks, 21 open issues and last shipped yesterday. openapi-generator leads on adoption by 290% (26,752 vs 6,865 stars). openapi-generator is written in Java under Apache-2.0; gpt-load is written in Go under MIT. openapi-generator has attracted 29% as many forks as stars, gpt-load 11%. gpt-load 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
| openapi-generator | gpt-load | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 6.9K |
| License | Apache-2.0 | MIT |
| Written in | Java | Go |
| Last push | 2026-09-17 | 2026-09-20 |
| Forks | ⑂ 7.7K | ⑂ 759 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick openapi-generator if
- You weight community size — 27K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick gpt-load if
- You want the gpt-load feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and gpt-load fits your workflow better
About openapi-generator
OpenAPI Generator is an Apache 2.0 licensed Java tool that generates API client libraries, server stubs, documentation, and configuration automatically from an OpenAPI Specification, and it is built for development teams that keep a machine readable API description and want generated code to stay in step with it.
read the full openapi-generator overview →
About gpt-load
GPT Load is a self hosted AI gateway written in Go and released under the MIT license. It gives applications a single entry point — one base URL and one AccessKey — for reaching many AI providers at once. Providers, accounts, credentials, models, and routing policy are configured in the bundled management UI rather than in application code.
read the full gpt-load overview →
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Frequently asked questions
Is openapi-generator or gpt-load more popular?
openapi-generator has 26,752 GitHub stars and gpt-load has 6,865. openapi-generator has the larger community by that measure.
Are openapi-generator and gpt-load free?
Both are open source. openapi-generator is licensed under Apache-2.0 and gpt-load under MIT. Neither carries a licence fee.
What is the difference between openapi-generator and gpt-load?
openapi-generator is written in Java and gpt-load 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, openapi-generator or gpt-load?
Choose openapi-generator if you want the larger community (26,752 stars) or its Apache-2.0 licence terms. Choose gpt-load if its feature set, stack or MIT licence fits better. Both are self-hostable.