Model comparison
Gemma 4 26B A4B IT vs Mercury 2.5
Gemma 4 26B A4B IT has enough public results to be ranked (#88); Mercury 2.5 does not yet, so treat this comparison as directional.
Last verified . 1 shared benchmarks.
GoogleSummary
- They share 1 benchmark with published results for both. Gemma 4 26B A4B IT scores higher in 1 category and Mercury 2.5 in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in math, where Gemma 4 26B A4B IT leads 45.7 to 22.4.
- Mercury 2.5 is cheaper at $0.04 / $0.15 per million input/output tokens, against $0.0765 / $0.26 for Gemma 4 26B A4B IT.
- Gemma 4 26B A4B IT accepts more context: 262K tokens versus 260K.
- Gemma 4 26B A4B IT has downloadable open weights; the other is API-only.
Side by side
| Gemma 4 26B A4B IT | Mercury 2.5 | |
|---|---|---|
| Provider | Inception | |
| Noometry Index | 43.1 | 30.2 |
| Released | 2026-04-02 | 2026-09-08 |
| Weights | Open | Proprietary |
| Context window | 262K | 260K |
| Max output | 33K | 66K |
| Input $ / M tokens | $0.0765 | $0.04 |
| Output $ / M tokens | $0.26 | $0.15 |
| Results tracked | 28 | 2 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Not comparable
Gemma 4 26B A4B IT: 38.8 (#156), Mercury 2.5: —
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| ALE-Bench | 927.17 | 301.65 |
| LMArena WebDev | 1359 | — |
| SciCode | 40% | — |
| WeirdML | 35.2% | — |
| LMArena Coding | 1446 | — |
Reasoning Not comparable
Gemma 4 26B A4B IT: 21.1 (#205), Mercury 2.5: —
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| CritPt | 0% | — |
| Chess Puzzles | 6% | — |
| LMArena Hard Prompts | 1438 | — |
| DTBench | 74.9% | — |
| LMCA | 29.7% | — |
| Epoch Capabilities Index | 141.85 | — |
Math Gemma 4 26B A4B IT leads
Gemma 4 26B A4B IT: 45.7 (#61), Mercury 2.5: 22.4
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 82.2% | — |
| ProofBench | — | 3% |
| LMArena Math | 1469 | — |
Knowledge Not comparable
Gemma 4 26B A4B IT: 45.6 (#79), Mercury 2.5: —
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| GPQA Diamond | 73.2% | — |
| Vectara Hallucination Rate | 5.2% | — |
| LMArena Expert | 1447 | — |
Multimodal Not comparable
Gemma 4 26B A4B IT: 39.9 (#43), Mercury 2.5: —
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| LMArena Vision | 1260 | — |
Multilingual Not comparable
Gemma 4 26B A4B IT: 53.3 (#68), Mercury 2.5: —
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| LMArena Non-English | 1422 | — |
| LMArena Chinese | 1495 | — |
| LMArena French | 1459 | — |
| LMArena Russian | 1434 | — |
| LMArena Spanish | 1415 | — |
Instruction Following Not comparable
Gemma 4 26B A4B IT: 75.0 (#78), Mercury 2.5: —
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| LMArena Instruction Following | 1420 | — |
Long Context Not comparable
Gemma 4 26B A4B IT: 43.6 (#87), Mercury 2.5: —
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| LMArena Longer Query | 1427 | — |
Writing & Preference Not comparable
Gemma 4 26B A4B IT: 58.8 (#110), Mercury 2.5: —
| Benchmark | Gemma 4 26B A4B IT | Mercury 2.5 |
|---|---|---|
| LMArena Text | 1434 | — |
| LMArena Creative Writing | 1401 | — |
| EQ-Bench Creative Writing | 1305 | — |
| LMArena Multi-Turn | 1442 | — |
Frequently asked questions
Is Gemma 4 26B A4B IT better than Mercury 2.5?
Gemma 4 26B A4B IT has enough public results to be ranked (#88); Mercury 2.5 does not yet, so treat this comparison as directional.
Which is cheaper, Gemma 4 26B A4B IT or Mercury 2.5?
Mercury 2.5 is cheaper. It lists at $0.04 per million input tokens and $0.15 per million output tokens; Gemma 4 26B A4B IT lists at $0.0765 and $0.26.
Which has the bigger context window?
Gemma 4 26B A4B IT does, with 262K tokens against 260K.
How many benchmarks do Gemma 4 26B A4B IT and Mercury 2.5 share?
1 benchmark has published results for both models. Gemma 4 26B A4B IT has 28 scored results on Noometry and Mercury 2.5 has 2.