Model comparison
GPT-4o vs o1
Head-to-head evidence from 12 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: GPT-4o #165 (Supported); o1 #129 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-4o and o1 share 12 comparable benchmark results. 1 of 8 categories are comparable. 1 result is unique to GPT-4o; 4 to o1.
Updated July 24, 2026- Shared results
- 12
- GPT-4o only
- 1
- o1 only
- 4
- Comparable categories
- 1 / 8
Pick o1 if you want the stronger benchmark profile. GPT-4o only becomes the better choice if you want the cheaper token bill or you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 12 shared benchmark results across 6 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
o1 is clearly ahead on the BenchAlign aggregate, 48.1 to 41.49. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o1's sharpest advantage is in mathematics, where it averages 9.3 against 0.3. The single biggest benchmark swing on the page is FrontierMath v2 (Tiers 1-3), 0.345% to 9.310%.
o1 is also the more expensive model on tokens at $15.00 input / $60.00 output per 1M tokens, versus $2.50 input / $10.00 output per 1M tokens for GPT-4o. That is roughly 6.0x on output cost alone. o1 is the reasoning model in the pair, while GPT-4o is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. o1 gives you the larger context window at 200K, compared with 128K for GPT-4o.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | GPT-4o | Δ | o1 |
|---|---|---|---|
| Math | GPT-4o0.3 | Margin→ 9.0 | o19.3 |
| Knowledge | GPT-4oNot measured | MarginNo overlap | o175.7 |
| Inst. Following | GPT-4oNot measured | MarginNo overlap | o192.2 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
FrontierMath v2 (Tiers 1-3)
MathA 0.345%B 9.310%Winner: o1Δ 9FrontierMath v2 (Tiers 1-3): GPT-4o scored 0.345%; o1 scored 9.310%. o1 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GPT-4o | o1 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-4o$2.5 input / $10 output | o1$15 input / $60 output | GPT-4o has the lower combined listed price. |
| Generation speedtokens per second | GPT-4o131 tok/s | o198 tok/s | GPT-4o has the higher measured throughput. |
| First-answer latencyseconds to first token | GPT-4o0.81 s | o132.29 s | GPT-4o reaches the first token sooner. |
| Context windowmaximum listed tokens | GPT-4o128K | o1200K | o1 lists the larger context window. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | GPT-4o | o1 | Result |
|---|---|---|---|
| τ²-bench resultsSource | 25.1% | 62.6% | o1 leads |
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge8 benchmarks
| Benchmark | GPT-4o | o1 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 11.2% | 23.4% | o1 leads |
| AA-GPQA DiamondSource | 54.3% | 74.7% | o1 leads |
| AA-HLESource | 3.3% | 7.7% | o1 leads |
| AA-Omniscience IndexSource | -10.7% | -10.5% | o1 leads |
| AA-Omniscience AccuracySource | 19.7% | 34.7% | o1 leads |
| AA-Omniscience Hallucination RateSource | 37.9% | 69.3% | GPT-4o leads |
| MMLUSource | — | 91.8% | Not comparable |
| GPQASource | — | 75.7% | Not comparable |
Matho1 wins1 benchmarks
| Benchmark | GPT-4o | o1 | Result |
|---|---|---|---|
| FrontierMath v2 (Tiers 1-3)Source | 0.345% | 9.310% | o1 leads |
Multimodal1 benchmarks
| Benchmark | GPT-4o | o1 | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 861 | — | Not comparable |
Frequently Asked Questions (2)
Which is better, GPT-4o or o1?
o1 is ahead on BenchLM's BenchAlign leaderboard, 48.1 to 41.49. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 0.345% and 9.310%.
Which is better for math, GPT-4o or o1?
o1 has the edge for math in this comparison, averaging 9.3 versus 0.3. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.
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