Atomic ChatvsOpen Responses
Two self-hosted OpenAI API alternatives, compared on the numbers selfhost.directory tracks live: score, popularity, release cadence and setup effort.
| Atomic Chat | Open Responses | |
|---|---|---|
| Score | 60/100 | 42/100 |
| Rank in category | #13 of 69 in AI Chat | #95 of 125 in AI |
| GitHub stars | 1 867 | 236 |
| Stars, last 30 days | — | — |
| Stable releases, 12 months | 3 | 0 |
| Latest release | v2.2.26 · 23 Oct 2026 | — |
| Setup | Easy | Moderate |
| Official Docker image | No | Yes |
| License | Other | Apache-2.0 |
| Main language | Typescript | Go |
Which one should you pick?
Atomic Chat scores 60/100 against 42/100 for Open Responses, so it is the safer default.
Atomic Chat ships more often: 3 stable releases in the past year, against 0 for Open Responses.
If you want the quickest setup, Atomic Chat is easier to run; Open Responses needs more configuration.
Atomic Chat details →Open Responses details → All OpenAI API alternatives →
Swap a project
Keep Atomic Chat, compare it with
Keep Open Responses, compare it with