Side-by-side technical and economic comparison between Anthropic's Claude Haiku 4.5 and xAI's Grok 4.6.
| Metric | Claude Haiku 4.5 | Grok 4.6 | Advantage |
|---|---|---|---|
| Provider Organization | Anthropic | xAI | — |
| Standard Input / 1M | $1.00 | $2.00 | Claude Haiku 4.5 (50% lower) |
| Cached Input / 1M | $0.10 | $0.50 | Claude Haiku 4.5 lower |
| Output / 1M | $5.00 | $6.00 | Claude Haiku 4.5 lower |
| Context Window | 200k | 500k | Grok 4.6 (500k) |
| Max Generation Tokens | 8.2k | 128k | Grok 4.6 |
| Tokenizer Family | Anthropic Claude BPE (~65k vocabulary) | xAI Byte-level BPE (~131k vocabulary) | — |
Opt for Claude Haiku 4.5 when your engineering requirements prioritize Anthropic's ecosystem, specific tokenizer efficiencies (Calibrated Claude Tokenizer (±3%)), or when your expected prompt-to-completion ratios favor its $1/M input rate.
Opt for Grok 4.6 when looking for xAI's tooling integration, specific context window depth (500k tokens), or when output generation volume favors its $6/M rate.