Model comparison
o1 vs o1-pro
Head-to-head evidence from 2 shared benchmark results across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Sibling matchup inside the o1 family.
Public leaderboard positions: o1 #129 (Estimated); o1-pro #141 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. o1 and o1-pro share 2 comparable benchmark results. 1 of 8 categories are comparable. 14 results are unique to o1; 0 to o1-pro.
Updated July 23, 2026- Shared results
- 2
- o1 only
- 14
- o1-pro only
- 0
- Comparable categories
- 1 / 8
o1 makes more sense if you want the cheaper token bill, while o1-pro is the cleaner fit if knowledge is the priority.
Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 1 evidence category; 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 and o1-pro sit in the same o1 family. This page is less about two unrelated model lineages and more about how the siblings trade off on benchmark shape, token costs, and practical limits like context window.
o1 has the cleaner BenchAlign overall profile here, landing at 48.1 versus 45.94. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
o1-pro is also the more expensive model on tokens at $150.00 input / $600.00 output per 1M tokens, versus $15.00 input / $60.00 output per 1M tokens for o1. That is roughly 10.0x on output cost alone.
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 | o1 | Δ | o1-pro |
|---|---|---|---|
| Knowledge | o175.7 | Margin→ 3.3 | o1-pro79.0 |
| Math | o19.3 | MarginNo overlap | o1-proNot measured |
| Inst. Following | o192.2 | MarginNo overlap | o1-proNot measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
GPQA
KnowledgeA 75.7%B 79%Winner: o1-proΔ 3.3GPQA: o1 scored 75.7%; o1-pro scored 79%. o1-pro wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | o1 | o1-pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | o1$15 input / $60 output | o1-pro$150 input / $600 output | o1 has the lower combined listed price. |
| Generation speedtokens per second | o198 tok/s | o1-proNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | o132.29 s | o1-proNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | o1200K | o1-pro200K | Listed context windows are equal. |
Benchmark Deep Dive
Agentic1 benchmarks
| Benchmark | o1 | o1-pro | Result |
|---|---|---|---|
| τ²-bench resultsSource | 62.6% | — | Not comparable |
Coding2 benchmarks
Reasoning2 benchmarks
Knowledgeo1-pro wins8 benchmarks
| Benchmark | o1 | o1-pro | Result |
|---|---|---|---|
| MMLUSource | 91.8% | — | Not comparable |
| GPQASource | 75.7% | 79% | o1-pro leads |
| Artificial Analysis Intelligence IndexSource | 23.4% | 18.9% | o1 leads |
| AA-GPQA DiamondSource | 74.7% | — | Not comparable |
| AA-HLESource | 7.7% | — | Not comparable |
| AA-Omniscience IndexSource | -10.5% | — | Not comparable |
| AA-Omniscience AccuracySource | 34.7% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 69.3% | — | Not comparable |
Math1 benchmarks
| Benchmark | o1 | o1-pro | Result |
|---|---|---|---|
| FrontierMath v2 (Tiers 1-3)Source | 9.310% | — | Not comparable |
Frequently Asked Questions (2)
Which is better, o1 or o1-pro?
o1 and o1-pro are sibling variants in the o1 family, so the right pick depends on whether you value the better benchmark line, cheaper tokens, or the larger context window. o1 is ahead on BenchLM's BenchAlign leaderboard 48.1 to 45.94.
Which is better for knowledge tasks, o1 or o1-pro?
o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 75.7. Inside this category, Artificial Analysis Intelligence Index is the benchmark that creates the most daylight between them.
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