# GPT-4o vs o3

> Side-by-side benchmark comparison for GPT-4o and o3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-4o-vs-o3
- Last updated: October 17, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-4o and o3 share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- o3 has the lower published output-token price.
- o3 has the larger published context window at 200K.

## Model Snapshot

| Property | GPT-4o | o3 |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 200K |
| Independent public score (not head-to-head) | 29.92 | 45.44 |
| Benchmarks Covered | 2 | 1 |
| Pricing (input/output) | $2.50 / $10.00 | $2.00 / $8.00 |

## Category Breakdown

### Reasoning

- Winner: Insufficient shared evidence
- GPT-4o public-lane score: 59.7 (Unranked · 2 rankable rows)
- o3 public-lane score: 77.2 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-4o public-lane score: Coming soon
- o3 public-lane score: 67.8 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- GPT-4o public-lane score: 27.9 (Estimated · #162/184)
- o3 public-lane score: 48.6 (Estimated · #88/184)

### Multilingual

- Winner: Insufficient shared evidence
- GPT-4o public-lane score: 30.2 (#16/17)
- o3 public-lane score: Coming soon

| Benchmark | GPT-4o | o3 | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 61.1% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-4o public-lane score: 39 (#121/148)
- o3 public-lane score: 87.4 (#38/148)

### Mathematics

- Winner: Insufficient shared evidence
- GPT-4o public-lane score: 27 (Unranked · 1 rankable row)
- o3 public-lane score: 48.5 (Unranked · 1 rankable row)

| Benchmark | GPT-4o | o3 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 0.351% | 33.333% | o3 |

## FAQ

### Is there enough evidence to pick between GPT-4o and o3?

Not yet. The models share only 1 sourced benchmark row, 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

- [GPT-4o vs GPT-4o mini](/compare/gpt-4o-vs-gpt-4o-mini)
- [o3 vs GPT-4o mini](/compare/gpt-4o-mini-vs-o3)
- [GPT-4o vs o3-pro](/compare/gpt-4o-vs-o3-pro)
- [o3 vs o3-pro](/compare/o3-vs-o3-pro)

## Explore More

- [GPT-4o profile](/models/gpt-4o)
- [o3 profile](/models/o3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)