Claude Opus 5.5 vs GPT-6 Luna
1 post3,352 likes278.6K views
Claude Opus 5.5 vs GPT-6 Luna in real side-by-side tests: 1 post from X where both got the same prompt; 1 post reports cost or time. Judge coding ability from the actual outputs.
Posts
1Same prompt, separate runs
1Not a controlled comparison: prompts, tools and time differ.
Summary
Claude Opus 5.5 and GPT-6 Luna appear together in 1 post on X: lava lamp, 4 models (@bridgebench). It is part of larger lineups with other models. In @bridgebench's lava lamp, 4 models, GPT-6 Luna was faster (43 s vs 9.6 min), as reported in the post.
What each post reports
| Post | Model | Time | Cost | Tokens | Original |
|---|---|---|---|---|---|
| Lava lamp, 4 models@bridgebench | Claude Opus 5.5 | 9.6 min | $1.27 | — | X post |
| Lava lamp, 4 models@bridgebench | GPT-6 Luna | 43 s | — | — | X post |
Only numbers stated in each post. “—” means the post doesn’t say.
Prompts shown in the posts
build a lava lamp — @bridgebench
Models
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