Kimi K2 vs Claude Haiku 4.5 for email drafting: which is better in 2026?
A head-to-head look at Kimi K2 and Claude Haiku 4.5 for email drafting. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.
Quick verdict
For email drafting in May 2026, Kimi K2 edges out Claude Haiku 4.5 on the inputPricePerMTok metric. Huge context window at low price.
Side-by-side specs
| Spec | Kimi | Haiku |
|---|---|---|
| Intelligence index | 70.4 | 65.8 |
| Coding index | 68.9 | 66.2 |
| Context window | 2M tokens | 500K tokens |
| Speed (tok/s) | 110 | 205 |
| Input $/M | $0.60 | $0.80 |
| Output $/M | $2.50 | $4.00 |
| Released | Dec 11, 2025 | Mar 19, 2026 |
How they handle email drafting
Kimi K2: Huge context window at low price. The main caveat is coding lags western frontier models.
Claude Haiku 4.5: Best tone-to-price ratio for client-facing email.
Cost per 1,000 queries
Assuming 1,500 input and 800 output tokens per query:
- Kimi K2: $2.90 per 1,000 queries
- Claude Haiku 4.5: $4.40 per 1,000 queries
Verdict by sub-task
- Best raw quality on email drafting:
- Best price: Kimi K2
- Longest context: Kimi K2
- Fastest: Claude Haiku 4.5
FAQ
Is Kimi K2 better than Claude Haiku 4.5 for email drafting?
On May 2026 benchmarks (artificialanalysis.ai), Kimi K2 ranks higher than Claude Haiku 4.5 for email drafting on the inputPricePerMTok metric. The gap is small enough that the choice often comes down to price, context length, and tone.
Which is cheaper, Kimi K2 or Claude Haiku 4.5?
Kimi K2 costs $0.60 input and $2.50 output per million tokens. Claude Haiku 4.5 costs $0.80 input and $4.00 output per million tokens.
Can I use both Kimi and Haiku in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run Kimi K2 and Claude Haiku 4.5 side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
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