Model comparison
Mercury 2.5 vs o1-pro
Mercury 2.5 is the stronger model overall, scoring 33.5 to 31.5 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- Mercury 2.5 is cheaper at $0.04 / $0.15 per million input/output tokens, against $150 / $600 for o1-pro.
- Mercury 2.5 accepts more context: 260K tokens versus 200K.
Side by side
| Mercury 2.5 | o1-pro | |
|---|---|---|
| Provider | Inception | OpenAI |
| Noometry Index | 33.5 | 31.5 |
| Released | 2026-09-08 | 2025-03-19 |
| Weights | Proprietary | Proprietary |
| Context window | 260K | 200K |
| Max output | 66K | 100K |
| Input $ / M tokens | $0.04 | $150 |
| Output $ / M tokens | $0.15 | $600 |
| Results tracked | 4 | 3 |
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Category by category
Coding Not comparable
Mercury 2.5: 39.5 (#156), o1-pro: —
Reasoning Mercury 2.5 leads
Mercury 2.5: 22.4 (#193), o1-pro: 20.4 (#239)
| Benchmark | Mercury 2.5 | o1-pro |
|---|---|---|
| ARC-AGI-1 | — | 23.3% |
| CritPt | 0% | — |
| EnigmaEval | — | 6.1% |
Math Not comparable
Mercury 2.5: 23.3 (#272), o1-pro: —
| Benchmark | Mercury 2.5 | o1-pro |
|---|---|---|
| ProofBench | 3% | — |
Knowledge Not comparable
Mercury 2.5: —, o1-pro: 29.7 (#234)
| Benchmark | Mercury 2.5 | o1-pro |
|---|---|---|
| Humanity's Last Exam | — | 8.1% |
Frequently asked questions
Is Mercury 2.5 better than o1-pro?
Mercury 2.5 is the stronger model overall, scoring 33.5 to 31.5 on the Noometry Index.
Which is cheaper, Mercury 2.5 or o1-pro?
Mercury 2.5 is cheaper. It lists at $0.04 per million input tokens and $0.15 per million output tokens; o1-pro lists at $150 and $600.
Which has the bigger context window?
Mercury 2.5 does, with 260K tokens against 200K.
How many benchmarks do Mercury 2.5 and o1-pro share?
0 benchmarks have published results for both models. Mercury 2.5 has 4 scored results on Noometry and o1-pro has 3.