# GPT-4.5 vs o4-mini (high)

> Side-by-side benchmark comparison for GPT-4.5 and o4-mini (high) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-4-5-vs-o4-mini-high
- Last updated: October 14, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for GPT-4.5 and o4-mini (high).

## Summary

- GPT-4.5 and o4-mini (high) 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 | GPT-4.5 | o4-mini (high) |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 200K |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 6 | 3 |
| Pricing (input/output) | $75.00 / $150.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- o4-mini (high) public-lane score: Coming soon

| Benchmark | GPT-4.5 | o4-mini (high) | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.6% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- o4-mini (high) public-lane score: Coming soon

| Benchmark | GPT-4.5 | o4-mini (high) | Winner |
|-----------|-----------|-----------|--------|
| DROP | 83.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- o4-mini (high) public-lane score: Coming soon

| Benchmark | GPT-4.5 | o4-mini (high) | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 90.8% | Coming soon | Coming soon |
| GPQA | 69.5% | Coming soon | Coming soon |
| SimpleQA | 62.5% | Coming soon | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- o4-mini (high) public-lane score: Coming soon

| Benchmark | GPT-4.5 | o4-mini (high) | Winner |
|-----------|-----------|-----------|--------|
| MGSM | 86.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-4.5 public-lane score: Coming soon
- o4-mini (high) public-lane score: 45 (Unranked · 3 rankable rows)

| Benchmark | GPT-4.5 | o4-mini (high) | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | Coming soon | 92.7% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 36.140% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 4.878% | Coming soon |

## FAQ

### Can I compare GPT-4.5 and o4-mini (high) 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

- [GPT-4.5 vs o4-mini](/compare/gpt-4-5-vs-o4-mini)
- [o4-mini (high) vs o4-mini](/compare/o4-mini-vs-o4-mini-high)
- [GPT-4.5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-gpt-4-5)
- [o4-mini (high) vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-o4-mini-high)

## Explore More

- [GPT-4.5 profile](/models/gpt-4-5)
- [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)