Trinity Large Thinking vs Claude Sonnet 5.5
Updated October 21, 2026. 37 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
vs boards won of 37 shared
Decision reading
Pick Claude Sonnet 5.5 for coding: it scores 88.9 on the Vibe Coding Index against 5.4 for Trinity Large Thinking.
Pick Trinity Large Thinking when output tokens cost 12.5x less.
Model ATrinity Large ThinkingArcee AI5.4/1001 independent benchmarkNo cost per solved taskModel BClaude Sonnet 5.5Anthropic88.9/1002 independent benchmarksNo cost per solved task
- Shared results
- 37
- Trinity Large Thinking only
- 15
- Claude Sonnet 5.5 only
- 58
- Like-for-like categories
- 7 of 9
Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, four public coding benchmarks
Claude Sonnet 5.5
Claude Sonnet 5.5 scores 88.9 against 5.4.
1 and 2 benchmarks behind the scores
Intelligence
AA Intelligence Index
Claude Sonnet 5.5
Claude Sonnet 5.5 leads, 56.0 against 10.8.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Trinity Large Thinking has a AA Agentic Index result, 1.0.
Directional only
Web design
Design Arena: websites
Claude Sonnet 5.5
Claude Sonnet 5.5 leads, 1326 against 1137.
Same board, both measured
General
Vals Index
No call
Only Claude Sonnet 5.5 has a Vals Index result, 70.8%.
Directional only
Long documents
Listed context window
Claude Sonnet 5.5
Claude Sonnet 5.5 takes 1M tokens against 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Trinity Large Thinking
Trinity Large Thinking $0.0006, Claude Sonnet 5.5 $0.0070 per turn.
List prices
At a glance
- Coding index
- Trinity Large Thinking 5.4 from 1 benchmark, Claude Sonnet 5.5 88.9 from 2 benchmarks.
- Widest category
- Intelligence, 45.2 points apart on average over 1 shared benchmark.
- Widest single gap
- LMArena WebDev: Trinity Large Thinking 1238 against Claude Sonnet 5.5 1768, 75.8 points apart on a 0 to 100 scale.
- Output price
- Trinity Large Thinking $0.80 against Claude Sonnet 5.5 $10.00 per million output tokens, 12.5x apart.
- Context window
- Trinity Large Thinking takes 262K tokens, Claude Sonnet 5.5 1M.
Benchmark by benchmark
First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.
| Category | Trinity Large Thinking | Bars | Claude Sonnet 5.5 | Ties |
|---|---|---|---|---|
| Coding | 0 | 6 | ||
| Intelligence | 0 | 1 | ||
| Reasoning | 0 | 4 | ||
| Math | 0 | 2 | ||
| Knowledge | 0 | 4 | ||
| Web design | 0 | 6 | ||
| General | 0 | 14 | ||
| All shared boards | 0 | 37 |
CodingLike-for-likeFour of these boards feed the Vibe Coding Index06
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| LiveBench coding | Not measured | 94.7% | Only Claude Sonnet 5.5 measured |
| LMArena WebDev | 1238 | 1768 | Claude Sonnet 5.5 |
| AA Coding Index | 25.8 | Not measured | Only Trinity Large Thinking measured |
| Terminal-Bench 4 (Vals AI) | Not measured | 64.1% | Only Claude Sonnet 5.5 measured |
| Vibe Code Bench (Vals AI) | Not measured | 92.4% | Only Claude Sonnet 5.5 measured |
| Code migration (Vals AI) | Not measured | 69.8% | Only Claude Sonnet 5.5 measured |
| ProgramBench (Vals AI) | Not measured | 6.5% | Only Claude Sonnet 5.5 measured |
| IOI (Vals AI) | Not measured | 83.1% | Only Claude Sonnet 5.5 measured |
| Terminal-Bench 2.1 (Vals AI) | Not measured | 83.2% | Only Claude Sonnet 5.5 measured |
| SWE-bench Multimodal (Vals AI) | Not measured | 58.3% | Only Claude Sonnet 5.5 measured |
| CyberBench (Vals AI) | Not measured | 59.6% | Only Claude Sonnet 5.5 measured |
| SciCode | 40.6% | 61.0% | Claude Sonnet 5.5 |
| Terminal-Bench Hard (Artificial Analysis run) | 22.7% | Not measured | Only Trinity Large Thinking measured |
| FrontierCode | Not measured | 52.1% | Only Claude Sonnet 5.5 measured |
| FrontierSWE | Not measured | 61.9% | Only Claude Sonnet 5.5 measured |
| ALE-Bench | Not measured | 1819.1 | Only Claude Sonnet 5.5 measured |
| LMArena Text: coding | 1357 | 1513 | Claude Sonnet 5.5 |
| LMArena Text: software and IT | 1362 | 1504 | Claude Sonnet 5.5 |
| LMArena WebDev: React | 1231 | 1817 | Claude Sonnet 5.5 |
| LMArena WebDev: HTML | 1240 | 1741 | Claude Sonnet 5.5 |
| LMArena WebDev: from an image | Not measured | 1737 | Only Claude Sonnet 5.5 measured |
| Neither model has a result on the other 17 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| AA Intelligence Index | 10.8 | 56.0 | Claude Sonnet 5.5 |
| Epoch Capabilities Index | Not measured | 166.2 | Only Claude Sonnet 5.5 measured |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index20 boards, none shared
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| AA Agentic Index | 1.0 | Not measured | Only Trinity Large Thinking measured |
| Design Arena: agents building web apps | Not measured | 1303 | Only Claude Sonnet 5.5 measured |
| Design Arena: agents building mobile apps | Not measured | 1265 | Only Claude Sonnet 5.5 measured |
| Design Arena: spreadsheets | Not measured | 1245 | Only Claude Sonnet 5.5 measured |
| LiveBench research | Not measured | 83.6% | Only Claude Sonnet 5.5 measured |
| LiveBench browser | Not measured | 84.0% | Only Claude Sonnet 5.5 measured |
| LiveBench long agentic | Not measured | 78.8% | Only Claude Sonnet 5.5 measured |
| SREBench (Vals AI) | Not measured | 30.1% | Only Claude Sonnet 5.5 measured |
| Finance Agent (Vals AI) | Not measured | 58.1% | Only Claude Sonnet 5.5 measured |
| Tax Agent Bench (Vals AI) | Not measured | 42.0% | Only Claude Sonnet 5.5 measured |
| Legal Research Bench (Vals AI) | Not measured | 48.1% | Only Claude Sonnet 5.5 measured |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 10.4% | Only Claude Sonnet 5.5 measured |
| Excel Modeling Benchmark (Vals AI) | Not measured | 75.7% | Only Claude Sonnet 5.5 measured |
| BioMysteryBench (Vals AI) | Not measured | 81.1% | Only Claude Sonnet 5.5 measured |
| Terminal-Bench-Science (Vals AI) | Not measured | 47.1% | Only Claude Sonnet 5.5 measured |
| Vals Science Index | Not measured | 59.1% | Only Claude Sonnet 5.5 measured |
| τ²-Bench Telecom | 90.1% | Not measured | Only Trinity Large Thinking measured |
| APEX-Agents | Not measured | 75.5% | Only Claude Sonnet 5.5 measured |
| SpireClimb | Not measured | 1.3% | Only Claude Sonnet 5.5 measured |
| Vending-Bench 2 | Not measured | $11,165 | Only Claude Sonnet 5.5 measured |
| Neither model has a result on the other 19 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| LiveBench reasoning | Not measured | 91.6% | Only Claude Sonnet 5.5 measured |
| MysteryMechanism (Vals AI) | Not measured | 49.1% | Only Claude Sonnet 5.5 measured |
| GPQA Diamond (Artificial Analysis run) | 75.2% | Not measured | Only Trinity Large Thinking measured |
| Humanity's Last Exam (Artificial Analysis run) | 15.8% | 55.0% | Claude Sonnet 5.5 |
| GPQA Diamond (Epoch AI run) | Not measured | 95.6% | Only Claude Sonnet 5.5 measured |
| Chess puzzles | Not measured | 59.0% | Only Claude Sonnet 5.5 measured |
| Mystery game puzzles | Not measured | 65.0% | Only Claude Sonnet 5.5 measured |
| LMArena Text: hard prompts | 1342 | 1494 | Claude Sonnet 5.5 |
| LMArena Text: expert | 1359 | 1531 | Claude Sonnet 5.5 |
| LMArena Text: hard prompts in English | 1356 | 1502 | Claude Sonnet 5.5 |
| LMArena Vision: diagrams | Not measured | 1329 | Only Claude Sonnet 5.5 measured |
| LMArena Vision: homework | Not measured | 1331 | Only Claude Sonnet 5.5 measured |
| Neither model has a result on the other 9 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| OTIS Mock AIME | Not measured | 100.0% | Only Claude Sonnet 5.5 measured |
| FrontierMath, tiers 1 to 3 | Not measured | 88.8% | Only Claude Sonnet 5.5 measured |
| FrontierMath, tier 4 | Not measured | 80.5% | Only Claude Sonnet 5.5 measured |
| ProofBench | Not measured | 100.0% | Only Claude Sonnet 5.5 measured |
| LMArena Text: math | 1365 | 1497 | Claude Sonnet 5.5 |
| LMArena Text: mathematical work | 1350 | 1510 | Claude Sonnet 5.5 |
| Neither model has a result on the other 7 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| CaseLaw (Vals AI) | 57.9% | Not measured | Only Trinity Large Thinking measured |
| CorpFin (Vals AI) | 54.7% | Not measured | Only Trinity Large Thinking measured |
| MedCode (Vals AI) | Not measured | 52.9% | Only Claude Sonnet 5.5 measured |
| SimpleQA Verified | Not measured | 46.5% | Only Claude Sonnet 5.5 measured |
| LMArena Text: science | 1355 | 1483 | Claude Sonnet 5.5 |
| LMArena Text: medicine and healthcare | 1349 | 1464 | Claude Sonnet 5.5 |
| LMArena Text: legal and government | 1345 | 1483 | Claude Sonnet 5.5 |
| LMArena Text: business and finance | 1329 | 1468 | Claude Sonnet 5.5 |
| Neither model has a result on the other 9 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index06
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| Design Arena: websites | 1137 | 1326 | Claude Sonnet 5.5 |
| Design Arena: UI components | 1045 | 1367 | Claude Sonnet 5.5 |
| Design Arena: game dev | 1079 | 1469 | Claude Sonnet 5.5 |
| Design Arena: data viz | 1098 | 1389 | Claude Sonnet 5.5 |
| Design Arena: 3D | 1082 | 1458 | Claude Sonnet 5.5 |
| Design Arena: all code categories | 1117 | 1364 | Claude Sonnet 5.5 |
| Design Arena: SVG | 1016 | Not measured | Only Trinity Large Thinking measured |
| Design Arena: ASCII art | 1041 | Not measured | Only Trinity Large Thinking measured |
| LiveBench design | Not measured | 85.0% | Only Claude Sonnet 5.5 measured |
GeneralLike-for-likePublic boards, shown as published, kept out of the index014
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| Vals Index | Not measured | 70.8% | Only Claude Sonnet 5.5 measured |
| LiveBench data analysis | Not measured | 59.5% | Only Claude Sonnet 5.5 measured |
| Public Benefits Bench (Vals AI) | Not measured | 67.2% | Only Claude Sonnet 5.5 measured |
| SAGE (Vals AI) | Not measured | 51.8% | Only Claude Sonnet 5.5 measured |
| MedScribe (Vals AI) | Not measured | 91.1% | Only Claude Sonnet 5.5 measured |
| IFBench | 56.3% | Not measured | Only Trinity Large Thinking measured |
| Long context reasoning (AA-LCR) | 38.0% | 82.7% | Claude Sonnet 5.5 |
| DTBench | Not measured | 97.3% | Only Claude Sonnet 5.5 measured |
| LMCA | Not measured | 68.3% | Only Claude Sonnet 5.5 measured |
| Surface Evolver Bench | 15.6% | Not measured | Only Trinity Large Thinking measured |
| Furniture assembly | Not measured | 75.0% | Only Claude Sonnet 5.5 measured |
| LMArena Text | 1340 | 1473 | Claude Sonnet 5.5 |
| LMArena Text: instruction following | 1326 | 1492 | Claude Sonnet 5.5 |
| LMArena Text: creative writing | 1308 | 1467 | Claude Sonnet 5.5 |
| LMArena Vision | Not measured | 1287 | Only Claude Sonnet 5.5 measured |
| LMArena Text: English | 1356 | 1484 | Claude Sonnet 5.5 |
| LMArena Text: non-English | 1325 | 1456 | Claude Sonnet 5.5 |
| LMArena Text: Chinese | 1371 | 1535 | Claude Sonnet 5.5 |
| LMArena Text: German | 1356 | Not measured | Only Trinity Large Thinking measured |
| LMArena Text: Japanese | 1312 | Not measured | Only Trinity Large Thinking measured |
| LMArena Text: Korean | 1306 | Not measured | Only Trinity Large Thinking measured |
| LMArena Text: French | 1366 | 1499 | Claude Sonnet 5.5 |
| LMArena Text: Spanish | 1327 | 1451 | Claude Sonnet 5.5 |
| LMArena Text: Russian | 1338 | 1454 | Claude Sonnet 5.5 |
| LMArena Text: Polish | 1312 | Not measured | Only Trinity Large Thinking measured |
| LMArena Text: multi-turn | 1320 | 1465 | Claude Sonnet 5.5 |
| LMArena Text: longer queries | 1318 | 1495 | Claude Sonnet 5.5 |
| LMArena Text: writing and language | 1317 | 1474 | Claude Sonnet 5.5 |
| LMArena Text: entertainment and media | 1296 | 1461 | Claude Sonnet 5.5 |
| LMArena Vision: English | Not measured | 1289 | Only Claude Sonnet 5.5 measured |
| LMArena Vision: reading text | Not measured | 1297 | Only Claude Sonnet 5.5 measured |
| LMArena Vision: creative writing | Not measured | 1242 | Only Claude Sonnet 5.5 measured |
| Neither model has a result on the other 14 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Trinity Large Thinking | Claude Sonnet 5.5 | Leader |
|---|---|---|---|
| Neither model has a result on 5 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Trinity Large Thinking$0.0006Fits in one request
Claude Sonnet 5.5$0.0070Fits in one request
Trinity Large Thinking costs less
Repository review
50K input + 3K output tokens
Trinity Large Thinking$0.015Fits in one request
Claude Sonnet 5.5$0.130Fits in one request
Trinity Large Thinking costs less
Agent loop
200K input + 10K output tokens
Trinity Large Thinking$0.058Fits in one request
Claude Sonnet 5.5$0.500Fits in one request
Trinity Large Thinking costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Arcee AI Trinity Large Thinking | Anthropic Claude Sonnet 5.5 |
|---|---|---|
| Maker | Arcee AI | Anthropic |
| Weights | Open weights | No public weights listed |
| Released | April 1, 2026 | September 28, 2026 |
| Context window | 262K | 1M |
| Input $/Mtok | $0.25 | $2.00 |
| Output $/Mtok | $0.80 | $10.00 |
| Coding index | 5.4 | 88.9 |
| Independent measurements behind it | 1 | 2 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Trinity Large Thinking better than Claude Sonnet 5.5 for coding?
Pick Claude Sonnet 5.5 for coding: it scores 88.9 on the Vibe Coding Index against 5.4 for Trinity Large Thinking. Pick Trinity Large Thinking when output tokens cost 12.5x less.
Which is cheaper, Trinity Large Thinking or Claude Sonnet 5.5?
Trinity Large Thinking costs $0.25 per million input tokens and $0.80 per million output tokens; Claude Sonnet 5.5 costs $2.00 and $10.00. Cost per solved task is known for neither of them.
Which has the bigger context window, Trinity Large Thinking or Claude Sonnet 5.5?
Claude Sonnet 5.5, with 1M tokens against 262K.
How many benchmarks is the Trinity Large Thinking vs Claude Sonnet 5.5 comparison based on?
37 benchmarks have a result for both models as of October 21, 2026. Trinity Large Thinking's coding index rests on 1 independent benchmark and Claude Sonnet 5.5's on 2. Where only one model has a result, the page says so instead of naming a winner.