Claude Haiku 4.5 vs Claude Sonnet 5.5
2 posts57 likes4.2K views
Claude Haiku 4.5 vs Claude Sonnet 5.5 in real side-by-side tests: 2 posts from X where both got the same prompt; 1 post reports cost or time. Judge coding ability from the actual outputs.
Posts
2Same prompt, separate runs
1Not a controlled comparison: prompts, tools and time differ.
Summary
Claude Haiku 4.5 and Claude Sonnet 5.5 appear together in 2 posts on X: self-playing Tetris, 3 Claude models (@ka1manov) and Rubik's cube, 3 Claude models (@ka1manov). All are part of larger lineups with other models. In @ka1manov's Rubik's cube, 3 Claude models, Claude Sonnet 5.5 was faster (4.6 min vs 4.8 min), as reported in the post.
What each post reports
| Post | Model | Time | Cost | Tokens | Original |
|---|---|---|---|---|---|
| Self-playing Tetris, 3 Claude models@ka1manov | Claude Sonnet 5.5 | — | — | — | X post |
| Self-playing Tetris, 3 Claude models@ka1manov | Claude Haiku 4.5 | — | — | — | X post |
| Rubik's cube, 3 Claude models@ka1manov | Claude Sonnet 5.5 | 4.6 min | — | — | X post |
| Rubik's cube, 3 Claude models@ka1manov | Claude Haiku 4.5 | 4.8 min | — | — | X post |
Only numbers stated in each post. “—” means the post doesn’t say.
Models
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