Claude Haiku 4.5 vs o3
Which is better in 2026?
Claude Haiku 4.5
83
Veltrix Score
vs
o3
84
Veltrix Score
Detailed Scores
Claude Haiku 4.5 — Scores
Coding80
Reasoning78
Creativity75
Speed95
Cost Efficiency92
Context: 200K tokens
API: $1 / $5 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 Haiku 4.5 | o3 |
|---|---|---|
| Veltrix Score | 83/100 | 84/100 |
| Context Window | 200K tokens | 200K tokens |
| API Cost (input/output per 1M) | $1 / $5 | $1.1 / $4.4 |
| Coding | 80/100 | 90/100 |
| Reasoning | 78/100 | 92/100 |
| Speed | 95/100 | 82/100 |
Best for — Claude Haiku 4.5
- +Code generation and review
- +Fast response times
- +Cost-efficient at scale
Best for — o3
- +Code generation and review
- +Complex reasoning tasks
- +Fast response times
Analysis
Claude Haiku 4.5 and o3 are both popular choices in the llm space. With Veltrix Scores of 83 and 84 respectively, they are closely matched overall.
In coding benchmarks, o3 takes the lead. For reasoning tasks, o3 performs stronger. For cost-conscious developers, Claude Haiku 4.5 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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