Claude Haiku 5.5 vs GPT-6 Luna
Both have similar output pricing, while GPT-6 Luna offers a larger context window. Choose Claude Haiku 5.5 or GPT-6 Luna based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Haiku 5.5 | GPT-6 Luna |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Input / 1M tokens | $0.10 | $0.10 |
| Output / 1M tokens | $0.50 | $0.50 |
| Context window | 1M | 1.1M |
| Parameters | — | — |
| Open weights | — | — |
| Released | — | — |
| GPQA Diamond score | 89.7 | 90.5 |
| LMArena WebDev Elo score | 1585 | 1582 |
| Epoch Capabilities Index score | 159 | 156 |
| LMArena (Chatbot Arena) Elo score | — | 1392 |
| LMArena Vision Elo score | — | 1217 |
FAQ
Is Claude Haiku 5.5 or GPT-6 Luna cheaper?
Claude Haiku 5.5 and GPT-6 Luna have comparable output pricing.
Which has the larger context window, Claude Haiku 5.5 or GPT-6 Luna?
GPT-6 Luna has the larger context window (1.1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.