Best LLM for Math & Reasoning
Math and multi-step reasoning are where cheap models fail most visibly — a wrong intermediate step derails the whole answer. This is a task worth a higher quality bar.
Best value pick
DeepSeek V4 Pro
DeepSeek · Math & reasoning Arena 1395 · about $108.75/month at 100,000 calls. The top-ranked Gemini 2.5 Pro costs $687.50/month — you save $578.75/month with DeepSeek V4 Pro.
| 1 | DeepSeek V4 Pro | 1395 | $108.75 | DeepSeek |
| 2 | GPT-5 Mini | 1390 | $137.50 | OpenAI |
| 3 | Gemini 2.5 Flash | 1385 | $170.00 | |
| 4 | Grok 4.3 | 1382 | $312.50 | xAI |
| 5 | o4-mini | 1400 | $385.00 | OpenAI |
| 6 | Grok 4.5 | 1445 | $600.00 | xAI |
| 7 | GPT-5 | 1420 | $687.50 | OpenAI |
| 8 | Gemini 2.5 Pro | 1450 | $687.50 | |
| 9 | o3 | 1435 | $700.00 | OpenAI |
| 10 | Claude Sonnet 5 | 1410 | $800.00 | Anthropic |
| 11 | Amazon Nova Premier | 1398 | $1,000.00 | AWS Bedrock |
| 12 | GPT-5.4 | 1440 | $1,125.00 | OpenAI |
Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 28 July 2026. Scores are a relative signal, not an absolute measure of capability. A Measured score was voted on directly; an Estimated score is inherited from an identical base model (a regional/creator-prefixed hosting duplicate). See our methodology.
Why picking isn’t obvious
Reasoning models spend (billed) tokens thinking, so they cost more per answer, but the accuracy gain is real on hard problems. We rank on the math/reasoning Arena, require a reasoning mode, and set a tight bar.
FAQ
What is the best value LLM for math?
DeepSeek V4 Pro is the cheapest model that still clears our quality bar for this task, at about $108.75/month for 100,000 calls (1,500 in / 500 out). It scores 1395 on the Math & reasoning Arena.
Is the most expensive model worth it for this?
Gemini 2.5 Pro tops the Math & reasoning Arena but costs about $687.50/month here — roughly $578.75/month more than DeepSeek V4 Pro for 55 extra Arena points. For most workloads that gap is not worth the premium.
Cite / link to this page
You’re welcome to reference this page and its figures with attribution and a link back.
https://aicalculatorpro.com/best-llm-for/math-reasoning/<a href="https://aicalculatorpro.com/best-llm-for/math-reasoning/">Best LLM for Math & Reasoning — AI Calculator Pro</a>