Real-world results are in for Claude Haiku 5.5 (High) by @AnthropicAI.
Debuting at #30 with 1587 pts in Code Arena: WebDev, this release sits just outside the Pareto frontier while still offering strong cost efficiency. It matches GPT‑6 Luna’s price at $0.10/$0.50 per 1M input/output tokens while scoring six pts higher.
Compared with other Claude models, Haiku 5.5 offers:
- 90% lower cost than Haiku 4.5 at +257 pts
- 95% lower cost than Sonnet 5.5 (High) at -128 pts
- 98% lower cost than Opus 5 (High) at -70 pts
- 99% lower cost than Fable 5.1 (Max) at -157 pts
Congrats to the team at @AnthropicAI on this release!