DeepSeek V4 Pro vs Claude Haiku 4.5 for email drafting: which is better in 2026?
A head-to-head look at DeepSeek V4 Pro 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, DeepSeek V4 Pro edges out Claude Haiku 4.5 on the inputPricePerMTok metric. Cheapest frontier-class pricing.
Side-by-side specs
| Spec | DeepSeek | Haiku |
|---|---|---|
| Intelligence index | 72.8 | 65.8 |
| Coding index | 74.5 | 66.2 |
| Context window | 256K tokens | 500K tokens |
| Speed (tok/s) | 120 | 205 |
| Input $/M | $0.27 | $0.80 |
| Output $/M | $1.10 | $4.00 |
| Released | Mar 4, 2026 | Mar 19, 2026 |
How they handle email drafting
DeepSeek V4 Pro: Cheapest frontier-class pricing. The main caveat is weaker english creative writing.
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:
- DeepSeek V4 Pro: $1.29 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: DeepSeek V4 Pro
- Longest context: Claude Haiku 4.5
- Fastest: Claude Haiku 4.5
FAQ
Is DeepSeek V4 Pro better than Claude Haiku 4.5 for email drafting?
On May 2026 benchmarks (artificialanalysis.ai), DeepSeek V4 Pro 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, DeepSeek V4 Pro or Claude Haiku 4.5?
DeepSeek V4 Pro costs $0.27 input and $1.10 output per million tokens. Claude Haiku 4.5 costs $0.80 input and $4.00 output per million tokens.
Can I use both DeepSeek and Haiku in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run DeepSeek V4 Pro and Claude Haiku 4.5 side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
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