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NexusRoute

Guide

Best AI Model for Math & Reasoning

Mathematical proofs, logic puzzles, scientific reasoning, and complex problem-solving. Find the sharpest reasoning models.

Top Recommended Models

1

Claude Opus 4.6

Anthropic · frontier

96/100
Reasoning9.5/10
Factuality9.5/10
Coding10/10
Structured Output9.5/10
$5/1M in$25/1M out1000K context
Highest SWE-bench Verified score of any model — unmatched at real-world codingIndustry-leading instruction following and format adherenceThe most expensive frontier model at $5/$25 per million tokens
2

GPT-5.4

OpenAI · frontier

95/100
Reasoning9.5/10
Factuality9.5/10
Coding9.5/10
Structured Output9.5/10
$2.5/1M in$15/1M out1000K context
Long-document reasoning over 500K+ token contexts with high recallExtremely narrow math/logic tasks where o3 reasoning chains outperform
3

o3

OpenAI · specialized

93/100
Reasoning10/10
Factuality9.5/10
Coding9/10
Structured Output7.5/10
$1/1M in$4/1M out200K context
Competition-level math (AIME, AMC, Putnam-style problems)Formal logic, theorem proving, and abstract reasoningVery slow — 10 to 90 seconds for complex queries
4

Claude Sonnet 4.6

Anthropic · frontier

92/100
Reasoning9/10
Factuality9/10
Coding9.5/10
Structured Output9.5/10
$3/1M in$15/1M out1000K context
Coding quality is within ~3-5% of Opus 4.6 on SWE-bench at 40% of the costFaster inference than Opus while maintaining strong qualityGap vs Opus is visible on the hardest SWE-bench problems and complex refactors
5

Gemini 3.1 Pro

Google · frontier

92/100
Reasoning9.5/10
Factuality9/10
Coding9/10
Structured Output9/10
$2/1M in$12/1M out1049K context
Frontier-quality reasoning at a lower price than GPT-5.4 or Claude OpusPreview model — API may change, behavior may shift between versions

Pricing Comparison

ModelInput $/1MOutput $/1MContextScore
Claude Opus 4.6$5$251000K96
GPT-5.4$2.5$151000K95
o3$1$4200K93
Claude Sonnet 4.6$3$151000K92
Gemini 3.1 Pro$2$121049K92

Frequently Asked Questions

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