Model comparison
Gemini 3.1 Pro Preview vs Sonar Reasoning Pro
Gemini 3.1 Pro Preview has enough public results to be ranked (#20); Sonar Reasoning Pro does not yet, so treat this comparison as directional.
Last verified . 1 shared benchmarks.
Google
PerplexitySummary
- They share 1 benchmark with published results for both.
- Sonar Reasoning Pro is cheaper at $2 / $8 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
- Gemini 3.1 Pro Preview accepts more context: 1.05M tokens versus 128K.
Side by side
| Gemini 3.1 Pro Preview | Sonar Reasoning Pro | |
|---|---|---|
| Provider | Perplexity | |
| Noometry Index | 56.7 | — |
| Released | 2026-02-19 | 2024-01-01 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 128K |
| Max output | 66K | 4K |
| Input $ / M tokens | $2 | $2 |
| Output $ / M tokens | $12 | $8 |
| Results tracked | 71 | 1 |
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Category by category
Coding Not comparable
Gemini 3.1 Pro Preview: 42.7 (#88), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| SWE-bench Verified | 75.6% | — |
| DeepSWE | 11.7% | — |
| LMArena WebDev | 1446 | — |
| SciCode | 58.9% | — |
| GSO | 22.6% | — |
| WeirdML | 72.1% | — |
| LMArena Coding | 1483 | — |
| MirrorCode | 8.9% | — |
| ALE-Bench | 1,161 | — |
| AlgoTune | 2.02 | — |
Agentic & Tool Use Not comparable
Gemini 3.1 Pro Preview: 37.7 (#33), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| LMArena Search | 1211 | 1139 |
| Terminal-Bench | 80.2% | — |
| APEX-Agents | 35.3% | — |
| τ²-bench Banking | 26% | — |
| DeepResearch Bench | 47.8% | — |
| PostTrainBench | 22% | — |
| BALROG | 57% | — |
| ExploitBench | 26.1% | — |
| GBAEval | 0.8% | — |
| GDP.pdf | 17% | — |
| METR Time Horizons | 77% | — |
| Vending-Bench 2 | 3,774 | — |
Reasoning Not comparable
Gemini 3.1 Pro Preview: 71.7 (#9), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| ARC-AGI-2 | 77.1% | — |
| SimpleBench | 79.6% | — |
| NYT Connections (extended) | 97.4% | — |
| ARC-AGI-1 | 98% | — |
| CritPt | 17.7% | — |
| Chess Puzzles | 55% | — |
| EnigmaEval | 36.8% | — |
| Thematic Generalization | 79.4% | — |
| EBR-Bench | 14.3% | — |
| LMArena Hard Prompts | 1484 | — |
| Mystery Game Puzzles | 34% | — |
| DTBench | 97.1% | — |
| LMCA | 53.8% | — |
| Epoch Capabilities Index | 154.92 | — |
| ForecastBench | 59 | — |
Math Not comparable
Gemini 3.1 Pro Preview: 61.8 (#28), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 59.6% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 86.5% | — |
| OTIS Mock AIME 2024-2025 | 95.6% | — |
| ProofBench | 26% | — |
| LMArena Math | 1485 | — |
| FrontierMath (Feb 2025 set) | 36.9% | — |
| FrontierMath Tier 4 (v1) | 16.7% | — |
Knowledge Not comparable
Gemini 3.1 Pro Preview: 71.8 (#3), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| GPQA Diamond | 94.4% | — |
| Humanity's Last Exam | 46.4% | — |
| SimpleQA Verified | 73.5% | — |
| Vectara Hallucination Rate | 10.4% | — |
| LMArena Expert | 1484 | — |
Multimodal Not comparable
Gemini 3.1 Pro Preview: 38.1 (#60), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| LMArena Vision | 1296 | — |
| Blueprint-Bench 2 | 26.5% | — |
| Furniture Assembly | 26.7% | — |
| LMArena Document | 1444 | — |
Multilingual Not comparable
Gemini 3.1 Pro Preview: 57.1 (#11), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| LMArena Non-English | 1475 | — |
| LMArena Chinese | 1528 | — |
| LMArena French | 1488 | — |
| LMArena German | 1491 | — |
| LMArena Japanese | 1494 | — |
| LMArena Korean | 1458 | — |
| LMArena Russian | 1496 | — |
| LMArena Spanish | 1480 | — |
Instruction Following Not comparable
Gemini 3.1 Pro Preview: 77.1 (#31), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| LMArena Instruction Following | 1465 | — |
Long Context Not comparable
Gemini 3.1 Pro Preview: 47.3 (#17), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| CL-bench | 20.8% | — |
| CL-bench Life | 16.9% | — |
| LMArena Longer Query | 1482 | — |
Writing & Preference Not comparable
Gemini 3.1 Pro Preview: 66.3 (#36), Sonar Reasoning Pro: —
| Benchmark | Gemini 3.1 Pro Preview | Sonar Reasoning Pro |
|---|---|---|
| LMArena Text | 1480 | — |
| LMArena Creative Writing | 1482 | — |
| EQ-Bench Creative Writing | 1491 | — |
| EQ-Bench 4 | 1142 | — |
| LMArena Multi-Turn | 1486 | — |
Frequently asked questions
Is Gemini 3.1 Pro Preview better than Sonar Reasoning Pro?
Gemini 3.1 Pro Preview has enough public results to be ranked (#20); Sonar Reasoning Pro does not yet, so treat this comparison as directional.
Which is cheaper, Gemini 3.1 Pro Preview or Sonar Reasoning Pro?
Sonar Reasoning Pro is cheaper. It lists at $2 per million input tokens and $8 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.
Which has the bigger context window?
Gemini 3.1 Pro Preview does, with 1.05M tokens against 128K.
How many benchmarks do Gemini 3.1 Pro Preview and Sonar Reasoning Pro share?
1 benchmark has published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and Sonar Reasoning Pro has 1.