Model comparison
Mercury 2 vs Trinity Large Thinking
Mercury 2 and Trinity Large Thinking score almost the same on the Noometry Index (39.1 vs 38.6), so choose on price, context window or the category you care about most.
Last verified . 15 shared benchmarks.
Summary
- They share 15 benchmarks with published results for both. Mercury 2 scores higher in 3 categories and Trinity Large Thinking in 4 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Mercury 2 leads 23.8 to 16.9.
- The biggest single-benchmark swing is Vectara Hallucination Rate: 12.3% for Mercury 2 and 6.9% for Trinity Large Thinking.
- Both cost about the same: $0.25 input and $0.75 output per million tokens.
- Trinity Large Thinking accepts more context: 262K tokens versus 128K.
- Trinity Large Thinking has downloadable open weights; the other is API-only.
Side by side
| Mercury 2 | Trinity Large Thinking | |
|---|---|---|
| Provider | Inception | Arcee AI |
| Noometry Index | 39.1 | 38.6 |
| Released | 2026-02-20 | 2026-04-01 |
| Weights | Proprietary | Open |
| Context window | 128K | 262K |
| Max output | 50K | 80K |
| Input $ / M tokens | $0.25 | $0.25 |
| Output $ / M tokens | $0.75 | $0.80 |
| Results tracked | 17 | 24 |
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Category by category
Coding Too close to call
Mercury 2: 33.5 (#255), Trinity Large Thinking: 34.1 (#244)
| Benchmark | Mercury 2 | Trinity Large Thinking |
|---|---|---|
| LMArena WebDev | 1171 | 1238 |
| SciCode | 38.7% | 36.1% |
| LMArena Coding | 1391 | 1381 |
| WeirdML | 43.2% | — |
| ALE-Bench | 785.58 | — |
Reasoning Mercury 2 leads
Mercury 2: 23.8 (#170), Trinity Large Thinking: 16.9 (#298)
| Benchmark | Mercury 2 | Trinity Large Thinking |
|---|---|---|
| CritPt | 0.8% | 0.9% |
| LMArena Hard Prompts | 1362 | 1350 |
| NYT Connections (extended) | — | 16.5% |
| Thematic Generalization | — | 41.6% |
| Surface Evolver Bench | — | 15.6% |
Math Not comparable
Mercury 2: —, Trinity Large Thinking: 37.6 (#149)
| Benchmark | Mercury 2 | Trinity Large Thinking |
|---|---|---|
| LMArena Math | — | 1366 |
Knowledge Trinity Large Thinking leads
Mercury 2: 36.2 (#172), Trinity Large Thinking: 40.9 (#113)
| Benchmark | Mercury 2 | Trinity Large Thinking |
|---|---|---|
| Vectara Hallucination Rate | 12.3% | 6.9% |
| LMArena Expert | 1358 | 1360 |
Multilingual Too close to call
Mercury 2: 46.6 (#157), Trinity Large Thinking: 46.2 (#160)
| Benchmark | Mercury 2 | Trinity Large Thinking |
|---|---|---|
| LMArena Non-English | 1331 | 1325 |
| LMArena Chinese | 1417 | 1373 |
| LMArena Russian | 1304 | 1337 |
| LMArena French | — | 1374 |
| LMArena German | — | 1356 |
| LMArena Japanese | — | 1311 |
| LMArena Korean | — | 1306 |
| LMArena Spanish | — | 1357 |
Instruction Following Too close to call
Mercury 2: 70.2 (#165), Trinity Large Thinking: 70.5 (#162)
| Benchmark | Mercury 2 | Trinity Large Thinking |
|---|---|---|
| LMArena Instruction Following | 1329 | 1334 |
Long Context Too close to call
Mercury 2: 40.5 (#154), Trinity Large Thinking: 41.3 (#144)
| Benchmark | Mercury 2 | Trinity Large Thinking |
|---|---|---|
| LMArena Longer Query | 1330 | 1355 |
Writing & Preference Too close to call
Mercury 2: 53.8 (#155), Trinity Large Thinking: 53.8 (#158)
| Benchmark | Mercury 2 | Trinity Large Thinking |
|---|---|---|
| LMArena Text | 1355 | 1340 |
| LMArena Creative Writing | 1289 | 1320 |
| LMArena Multi-Turn | 1358 | 1342 |
Frequently asked questions
Is Mercury 2 better than Trinity Large Thinking?
Mercury 2 and Trinity Large Thinking score almost the same on the Noometry Index (39.1 vs 38.6), so choose on price, context window or the category you care about most.
Which is cheaper, Mercury 2 or Trinity Large Thinking?
Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Trinity Large Thinking lists at $0.25 and $0.80.
Is Mercury 2 or Trinity Large Thinking better for coding?
They score almost the same on coding (33.5 vs 34.1); test both on your own repository before choosing.
Which has the bigger context window?
Trinity Large Thinking does, with 262K tokens against 128K.
How many benchmarks do Mercury 2 and Trinity Large Thinking share?
15 benchmarks have published results for both models. Mercury 2 has 17 scored results on Noometry and Trinity Large Thinking has 24.