Model comparison
GPT-6 Sol vs Mercury
GPT-6 Sol is the stronger model overall, scoring 61.8 to 37.6 on the Noometry Index.
Last verified . 8 shared benchmarks.
Summary
- They share 8 benchmarks with published results for both. GPT-6 Sol scores higher in 6 categories and Mercury in 0 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-6 Sol leads 74.0 to 17.5.
Side by side
| GPT-6 Sol | Mercury | |
|---|---|---|
| Provider | OpenAI | Inception |
| Noometry Index | 61.8 | 37.6 |
| Released | 2026-09-22 | — |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | — |
| Max output | 128K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 45 | 9 |
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Category by category
Coding GPT-6 Sol leads
GPT-6 Sol: 60.1 (#11), Mercury: 38.7 (#170)
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| LMArena Coding | 1447 | 1322 |
| DeepSWE | 68.8% | — |
| FrontierCode | 49.3% | — |
| LMArena WebDev | 1688 | — |
| SciCode | 57.6% | — |
| ALE-Bench | 2,462 | — |
Agentic & Tool Use Not comparable
GPT-6 Sol: 37.2 (#36), Mercury: —
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| APEX-Agents | 54.3% | — |
| GDP.pdf | 26.4% | — |
| Vending-Bench 2 | 14,428 | — |
Reasoning GPT-6 Sol leads
GPT-6 Sol: 74.0 (#9), Mercury: 17.5 (#293)
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| LMArena Hard Prompts | 1418 | 1285 |
| ARC-AGI-2 | 89.6% | — |
| Kagi LLM Benchmark | — | 21.6% |
| NYT Connections (extended) | 90.1% | — |
| ARC-AGI-1 | 95.5% | — |
| CritPt | 30.9% | — |
| EBR-Bench | 53.3% | — |
| Mystery Game Puzzles | 56% | — |
| DTBench | 97.3% | — |
| LMCA | 59.1% | — |
| Epoch Capabilities Index | 162.72 | — |
Math Not comparable
GPT-6 Sol: 87.2 (#7), Mercury: —
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| FrontierMath (Tiers 1-3) | 89.8% | — |
| FrontierMath Tier 4 | 90% | — |
| OTIS Mock AIME 2024-2025 | 100% | — |
| ProofBench | 83% | — |
| LMArena Math | 1402 | — |
Knowledge Not comparable
GPT-6 Sol: 64.8 (#15), Mercury: —
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| GPQA Diamond | 94.3% | — |
| SimpleQA Verified | 60.7% | — |
| Vectara Hallucination Rate | 6.5% | — |
| LMArena Expert | 1439 | — |
Multimodal Not comparable
GPT-6 Sol: 47.6 (#10), Mercury: —
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| LMArena Vision | 1245 | — |
| Blueprint-Bench 2 | 36.9% | — |
| Furniture Assembly | 58.3% | — |
Multilingual GPT-6 Sol leads
GPT-6 Sol: 50.5 (#118), Mercury: 41.6 (#206)
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| LMArena Non-English | 1385 | 1260 |
| LMArena Chinese | 1405 | — |
| LMArena French | 1410 | — |
| LMArena German | 1390 | — |
| LMArena Japanese | 1385 | — |
| LMArena Korean | 1341 | — |
| LMArena Russian | 1401 | — |
| LMArena Spanish | 1384 | — |
Instruction Following GPT-6 Sol leads
GPT-6 Sol: 74.5 (#94), Mercury: 65.2 (#224)
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| LMArena Instruction Following | 1412 | 1239 |
Long Context GPT-6 Sol leads
GPT-6 Sol: 43.1 (#108), Mercury: 38.4 (#198)
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| LMArena Longer Query | 1411 | 1266 |
Writing & Preference GPT-6 Sol leads
GPT-6 Sol: 71.9 (#18), Mercury: 46.2 (#221)
| Benchmark | GPT-6 Sol | Mercury |
|---|---|---|
| LMArena Text | 1395 | 1282 |
| LMArena Creative Writing | 1378 | 1191 |
| LMArena Multi-Turn | 1412 | 1282 |
| EQ-Bench Creative Writing | 2125 | — |
Frequently asked questions
Is GPT-6 Sol better than Mercury?
GPT-6 Sol is the stronger model overall, scoring 61.8 to 37.6 on the Noometry Index.
Is GPT-6 Sol or Mercury better for coding?
GPT-6 Sol scores higher on coding benchmarks: 60.1 versus 38.7 in the Noometry coding category.
How many benchmarks do GPT-6 Sol and Mercury share?
8 benchmarks have published results for both models. GPT-6 Sol has 45 scored results on Noometry and Mercury has 9.