o4-mini vs Gemini 2.5 Flash
Which is better in 2026?
o4-mini
88
Veltrix Score
vs
Gemini 2.5 Flash
88
Veltrix Score
Detailed Scores
o4-mini — Scores
Coding92
Reasoning94
Creativity72
Speed90
Cost Efficiency86
Context: 200K tokens
API: $1.1 / $4.4 per 1M tokens
Gemini 2.5 Flash — Scores
Coding87
Reasoning88
Creativity84
Speed95
Cost Efficiency88
Context: 1000K tokens
API: $0.3 / $2.5 per 1M tokens
Key Differences
| Aspect | o4-mini | Gemini 2.5 Flash |
|---|---|---|
| Veltrix Score | 88/100 | 88/100 |
| Context Window | 200K tokens | 1000K tokens |
| API Cost (input/output per 1M) | $1.1 / $4.4 | $0.3 / $2.5 |
| Coding | 92/100 | 87/100 |
| Reasoning | 94/100 | 88/100 |
| Speed | 90/100 | 95/100 |
Best for — o4-mini
- +Code generation and review
- +Complex reasoning tasks
- +Fast response times
- +Cost-efficient at scale
Best for — Gemini 2.5 Flash
- +Code generation and review
- +Complex reasoning tasks
- +Creative writing
- +Fast response times
- +Cost-efficient at scale
Analysis
o4-mini and Gemini 2.5 Flash are both popular choices in the llm space. With Veltrix Scores of 88 and 88 respectively, they are closely matched overall.
In coding benchmarks, o4-mini takes the lead. For reasoning tasks, o4-mini performs stronger. For cost-conscious developers, Gemini 2.5 Flash 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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