# o3 vs o4-mini (high)

> Side-by-side benchmark comparison for o3 and o4-mini (high) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/o3-vs-o4-mini-high
- Last updated: September 29, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: o3 and o4-mini (high) share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- o4-mini (high) has the lower published output-token price.

## Model Snapshot

| Property | o3 | o4-mini (high) |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 200K |
| Independent public score (not head-to-head) | 46.95 | null |
| Benchmarks Covered | 2 | 2 |
| Pricing (input/output) | $2.00 / $8.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Reasoning

- Winner: Insufficient shared evidence
- o3 public-lane score: 73.7 (Unranked · 2 rankable rows)
- o4-mini (high) public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- o3 public-lane score: 64.4 (Unranked · 1 rankable row)
- o4-mini (high) public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- o3 public-lane score: 47.1 (Estimated · #74/169)
- o4-mini (high) public-lane score: Coming soon

### Instruction Following

- Winner: Insufficient shared evidence
- o3 public-lane score: 86 (#34/124)
- o4-mini (high) public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- o3 public-lane score: 37.7 (Unranked · 2 rankable rows)
- o4-mini (high) public-lane score: 43 (Unranked · 2 rankable rows)

| Benchmark | o3 | o4-mini (high) | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 18.685% | 24.828% | o4-mini (high) |
| FrontierMath v2 (Tier 4) | 2.083% | 6.250% | o4-mini (high) |

## FAQ

### Is there enough evidence to pick between o3 and o4-mini (high)?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [o3 vs o3-pro](/compare/o3-vs-o3-pro)
- [o4-mini (high) vs o3-pro](/compare/o3-pro-vs-o4-mini-high)
- [o3 vs o3-mini](/compare/o3-vs-o3-mini)
- [o4-mini (high) vs o3-mini](/compare/o3-mini-vs-o4-mini-high)

## Explore More

- [o3 profile](/models/o3)
- [o4-mini (high) profile](/models/o4-mini-high)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)