DeepSeek V4 Pro vs GPT-5 Mini for math: which is better in 2026?
A head-to-head look at DeepSeek V4 Pro and GPT-5 Mini 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 GPT-5 Mini on the intelligenceIndex metric. Open weights with strong math chain-of-thought.
Side-by-side specs
| Spec | DeepSeek | GPT-5 Mini |
|---|---|---|
| Intelligence index | 72.8 | 64.5 |
| Coding index | 74.5 | 61.0 |
| Context window | 256K tokens | 200K tokens |
| Speed (tok/s) | 120 | 220 |
| Input $/M | $0.27 | $0.25 |
| Output $/M | $1.10 | $1.00 |
| Released | Mar 4, 2026 | Sep 10, 2025 |
How they handle math
DeepSeek V4 Pro: Open weights with strong math chain-of-thought.
GPT-5 Mini: Excellent quality-to-price ratio. The main caveat is behind flagships on hard reasoning.
Cost per 1,000 queries
Assuming 1,500 input and 800 output tokens per query:
- DeepSeek V4 Pro: $1.29 per 1,000 queries
- GPT-5 Mini: $1.18 per 1,000 queries
Verdict by sub-task
- Best raw quality on math:
- Best price: GPT-5 Mini
- Longest context: DeepSeek V4 Pro
- Fastest: GPT-5 Mini
FAQ
Is DeepSeek V4 Pro better than GPT-5 Mini for math?
On May 2026 benchmarks (artificialanalysis.ai), DeepSeek V4 Pro ranks higher than GPT-5 Mini 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 GPT-5 Mini?
DeepSeek V4 Pro costs $0.27 input and $1.10 output per million tokens. GPT-5 Mini costs $0.25 input and $1.00 output per million tokens.
Can I use both DeepSeek and GPT-5 Mini in one app?
Yes. Admix is a multi model AI chat aggregator that lets you run DeepSeek V4 Pro and GPT-5 Mini side by side under one subscription.
Sources
Benchmarks from artificialanalysis.ai (May 2026).
Related
Try both DeepSeek and GPT-5 Mini in Admix
One subscription, side-by-side answers, no API plumbing. From $8.99/mo.
Try Admix free