DeepSeek V4 Pro vs Claude Haiku 4.5 for math: which is better in 2026?
A head-to-head look at DeepSeek V4 Pro and Claude Haiku 4.5 for math. Benchmarks via artificialanalysis.ai, pricing as of May 2026. Compare AI models like these inside Admix.
Quick verdict
For math in May 2026, DeepSeek V4 Pro edges out Claude Haiku 4.5 on the intelligenceIndex metric. Open weights with strong math chain-of-thought.
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 math
DeepSeek V4 Pro: Open weights with strong math chain-of-thought.
Claude Haiku 4.5: Cheap Claude quality for everyday tasks. The main caveat is not as strong as opus on agentic coding.
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 math:
- 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 math?
On May 2026 benchmarks (artificialanalysis.ai), DeepSeek V4 Pro ranks higher than Claude Haiku 4.5 for math on the intelligenceIndex 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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