# GPT-4.1 nano vs o1

> Side-by-side benchmark comparison for GPT-4.1 nano and o1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-4-1-nano-vs-o1
- Last updated: September 29, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick o1 if you want the stronger benchmark profile. GPT-4.1 nano only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- o1 leads overall 37.48 to 24.89.
- The clearest category separation is in instruction following, where the averages are 34.6 for GPT-4.1 nano and 84.5 for o1.
- The biggest single benchmark swing is GPQA in Knowledge, with scores of 50.3% and 75.7%.
- GPT-4.1 nano is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-4.1 nano also has the larger context window at 1M.

## Model Snapshot

| Property | GPT-4.1 nano | o1 |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 200K |
| Overall Score | 24.89 | 37.48 |
| Benchmarks Covered | 4 | 4 |
| Pricing (input/output) | $0.10 / $0.40 | $15.00 / $60.00 |

## Category Breakdown

### Coding

- Winner: Directional only
- GPT-4.1 nano public-lane score: 14.8 (Estimated · #137/143)
- o1 public-lane score: 30.4 (Estimated · #93/143)

### Reasoning

- Winner: Not comparable
- GPT-4.1 nano public-lane score: 36.1 (Unranked · 2 rankable rows)
- o1 public-lane score: 67 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Not comparable
- GPT-4.1 nano public-lane score: 26.4 (Unranked · 1 rankable row)
- o1 public-lane score: Coming soon

### Knowledge

- Winner: o1
- GPT-4.1 nano public-lane score: 25.2 (Supported · #162/169)
- o1 public-lane score: 40.7 (Supported · #96/169)

| Benchmark | GPT-4.1 nano | o1 | Winner |
|-----------|-----------|-----------|--------|
| MMLU | 80.1% | 91.8% | o1 |
| GPQA | 50.3% | 75.7% | o1 |

### Instruction Following

- Winner: Directional only
- GPT-4.1 nano public-lane score: 34.6 (#109/124)
- o1 public-lane score: 84.5 (#40/124)

| Benchmark | GPT-4.1 nano | o1 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 83.2% | 92.2% | o1 |

### Mathematics

- Winner: Not comparable
- GPT-4.1 nano public-lane score: 25.4 (Unranked · 1 rankable row)
- o1 public-lane score: 32.5 (Unranked · 1 rankable row)

| Benchmark | GPT-4.1 nano | o1 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 1.034% | 9.310% | o1 |

## FAQ

### Which is better overall, GPT-4.1 nano or o1?

o1 is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-4.1 nano and o1?

The widest category gap is in instruction following, where the averages are 34.6 for GPT-4.1 nano and 84.5 for o1.

### How many benchmarks does GPT-4.1 nano cover on BenchLM?

GPT-4.1 nano currently has 4 sourced benchmark scores on BenchLM.

### How many benchmarks does o1 cover on BenchLM?

o1 currently has 4 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-4.1 nano vs GPT-4.1](/compare/gpt-4-1-vs-gpt-4-1-nano)
- [o1 vs GPT-4.1](/compare/gpt-4-1-vs-o1)
- [GPT-4.1 nano vs GPT-4.1 mini](/compare/gpt-4-1-mini-vs-gpt-4-1-nano)
- [o1 vs GPT-4.1 mini](/compare/gpt-4-1-mini-vs-o1)

## Explore More

- [GPT-4.1 nano profile](/models/gpt-4-1-nano)
- [o1 profile](/models/o1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)