Claude Sonnet 4.6 vs o3
Which is better in 2026?
Claude Sonnet 4.6
90
Veltrix Score
vs
o3
84
Veltrix Score
Detailed Scores
Claude Sonnet 4.6 — Scores
Coding92
Reasoning93
Creativity91
Speed88
Cost Efficiency82
Context: 1000K tokens
API: $3 / $15 per 1M tokens
o3 — Scores
Coding90
Reasoning92
Creativity71
Speed82
Cost Efficiency79
Context: 200K tokens
API: $1.1 / $4.4 per 1M tokens
Key Differences
| Aspect | Claude Sonnet 4.6 | o3 |
|---|---|---|
| Veltrix Score | 90/100 | 84/100 |
| Context Window | 1000K tokens | 200K tokens |
| API Cost (input/output per 1M) | $3 / $15 | $1.1 / $4.4 |
| Coding | 92/100 | 90/100 |
| Reasoning | 93/100 | 92/100 |
| Speed | 88/100 | 82/100 |
Best for — Claude Sonnet 4.6
- +Code generation and review
- +Complex reasoning tasks
- +Creative writing
- +Fast response times
- +Cost-efficient at scale
Best for — o3
- +Code generation and review
- +Complex reasoning tasks
- +Fast response times
Analysis
Claude Sonnet 4.6 and o3 are both popular choices in the llm space. Claude Sonnet 4.6 currently leads with a Veltrix Score of 90 compared to 84 for o3.
In coding benchmarks, Claude Sonnet 4.6 takes the lead. For reasoning tasks, Claude Sonnet 4.6 performs stronger. For cost-conscious developers, o3 offers better value per token.
This comparison is generated from live Veltrix ranking data. Scores are updated multiple times per week as new benchmarks and user data become available.
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