# Exaone 4.0 1.2B vs o3

> Side-by-side benchmark comparison for Exaone 4.0 1.2B and o3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/exaone-4-0-1-2b-vs-o3
- Last updated: September 21, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Exaone 4.0 1.2B and o3.

## Summary

- Exaone 4.0 1.2B and o3 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Exaone 4.0 1.2B | o3 |
|----------|----------|----------|
| Creator | LG AI Research | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 200K |
| Independent public score (not head-to-head) | 38.37 | 47.78 |
| Benchmarks Covered | 0 | 2 |
| Pricing (input/output) | N/A | $2.00 / $8.00 |

## Category Breakdown

### Reasoning

- Winner: Insufficient shared evidence
- Exaone 4.0 1.2B public-lane score: 21 (Unranked · 2 rankable rows)
- o3 public-lane score: 72.3 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Exaone 4.0 1.2B public-lane score: Coming soon
- o3 public-lane score: 63.3 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- Exaone 4.0 1.2B public-lane score: 36.2 (Estimated · #157/186)
- o3 public-lane score: 49.1 (Estimated · #91/186)

### Instruction Following

- Winner: Insufficient shared evidence
- Exaone 4.0 1.2B public-lane score: 27.4 (Unranked · 1 rankable row)
- o3 public-lane score: 86 (#34/124)

### Mathematics

- Winner: Insufficient shared evidence
- Exaone 4.0 1.2B public-lane score: Coming soon
- o3 public-lane score: 37.7 (Unranked · 2 rankable rows)

| Benchmark | Exaone 4.0 1.2B | o3 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 18.685% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 2.083% | Coming soon |

## FAQ

### Can I compare Exaone 4.0 1.2B and o3 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Exaone 4.0 1.2B vs Exaone 4.0 32B](/compare/exaone-4-0-1-2b-vs-exaone-4-0-32b)
- [o3 vs Exaone 4.0 32B](/compare/exaone-4-0-32b-vs-o3)
- [Exaone 4.0 1.2B vs o3-pro](/compare/exaone-4-0-1-2b-vs-o3-pro)
- [o3 vs o3-pro](/compare/o3-vs-o3-pro)

## Explore More

- [Exaone 4.0 1.2B profile](/models/exaone-4-0-1-2b)
- [o3 profile](/models/o3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)