Trinity Large Thinking vs Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads Trinity Large Thinking on the Artificial Analysis Intelligence Index, 15.6 to 10.8, and Trinity Large Thinking costs 1.9x less per output token ($0.80 vs $1.50 per million). Updated October 21, 2026; 44 benchmarks have a result for both.
Trinity Large Thinking or Gemini 3.1 Flash Lite Preview: which to pick
Only Gemini 3.1 Flash Lite Preview has a coding score, 22.7 on the Vibe Coding Index; Trinity Large Thinking has none, so the two cannot be ranked on coding.
Pick Trinity Large Thinking for output tokens 1.9x cheaper ($0.80 vs $1.50 per million) and work measured by CaseLaw (Vals AI) or Design Arena: websites, where it leads.
- Shared results
- 44
- Trinity Large Thinking only
- 8
- Gemini 3.1 Flash Lite Preview only
- 35
- Like-for-like categories
- 8 of 9
Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.
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, six public coding benchmarks
No call
Only Gemini 3.1 Flash Lite Preview has a coding score, so no call is made.
One side not measured
Intelligence
AA Intelligence Index
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 15.6 against 10.8.
Same board, both measured
Agentic work
AA Agentic Index
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 1.6 against 1.0.
Same board, both measured
Reasoning
GPQA Diamond
No call
Only Gemini 3.1 Flash Lite Preview has a GPQA Diamond result, 81.1%.
Directional only
Math
AIME
No call
Only Gemini 3.1 Flash Lite Preview has a AIME result, 83.3%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 3.1 Flash Lite Preview has a MMLU Pro result, 86.2%.
Directional only
Web design
Design Arena: websites
Trinity Large Thinking
Trinity Large Thinking leads, 1137 against 1083.
Same board, both measured
Long documents
Listed context window
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview takes 1.05M tokens against 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Trinity Large Thinking
Trinity Large Thinking $0.0006, Gemini 3.1 Flash Lite Preview $0.0010 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Gemini 3.1 Flash Lite Preview has the number, $0.18.
Directional only
At a glance
- Coding index
- Trinity Large Thinking not benchmarked, Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks.
- Widest category
- General, 14.0 points apart on average over 17 shared benchmarks.
- Widest single gap
- LMArena Text: Polish: Trinity Large Thinking 1312 against Gemini 3.1 Flash Lite Preview 1443, 21.8 points apart on a 0 to 100 scale.
- Output price
- Trinity Large Thinking $0.80 against Gemini 3.1 Flash Lite Preview $1.50 per million output tokens, 1.9x apart.
- Context window
- Trinity Large Thinking takes 262K tokens, Gemini 3.1 Flash Lite Preview 1.05M.
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 | Gemini 3.1 Flash Lite Preview | Ties |
|---|---|---|---|---|
| Coding | 0 | 6 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 0 | 1 | ||
| Reasoning | 0 | 3 | ||
| Math | 0 | 2 | ||
| Knowledge | 1 | 5 | ||
| Web design | 5 | 3 | ||
| General | 0 | 17 | ||
| All shared boards | 6 | 38 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index06
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| LMArena WebDev | 1238 | 1257 | Gemini 3.1 Flash Lite Preview |
| AA Coding Index | 25.8 | 34.7 | Gemini 3.1 Flash Lite Preview |
| LiveCodeBench (Vals AI) | Not measured | 80.1% | Only Gemini 3.1 Flash Lite Preview measured |
| SWE-bench Verified (Vals AI) | Not measured | 62.8% | Only Gemini 3.1 Flash Lite Preview measured |
| Vibe Code Bench (Vals AI) | Not measured | 0.0% | Only Gemini 3.1 Flash Lite Preview measured |
| Code migration (Vals AI) | Not measured | 4.6% | Only Gemini 3.1 Flash Lite Preview measured |
| ProgramBench (Vals AI) | Not measured | 0.0% | Only Gemini 3.1 Flash Lite Preview measured |
| Terminal-Bench 2.1 (Vals AI) | Not measured | 34.1% | Only Gemini 3.1 Flash Lite Preview measured |
| SciCode | 40.6% | Not measured | Only Trinity Large Thinking measured |
| Terminal-Bench Hard (Artificial Analysis run) | 22.7% | Not measured | Only Trinity Large Thinking measured |
| ALE-Bench | Not measured | 797.7 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Text: coding | 1357 | 1400 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: software and IT | 1362 | 1413 | Gemini 3.1 Flash Lite Preview |
| LMArena WebDev: React | 1231 | 1245 | Gemini 3.1 Flash Lite Preview |
| LMArena WebDev: HTML | 1240 | 1276 | Gemini 3.1 Flash Lite Preview |
| LMArena WebDev: from an image | Not measured | 1336 | Only Gemini 3.1 Flash Lite Preview measured |
| SciCode | Not measured | 4.6% | Only Gemini 3.1 Flash Lite Preview measured |
| Neither model has a result on the other 22 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| AA Intelligence Index | 10.8 | 15.6 | Gemini 3.1 Flash Lite Preview |
| Neither model has a result on the other 1 board here | |||
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| AA Agentic Index | 1.0 | 1.6 | Gemini 3.1 Flash Lite Preview |
| Finance Agent (Vals AI) | Not measured | 30.0% | Only Gemini 3.1 Flash Lite Preview measured |
| Tax Agent Bench (Vals AI) | Not measured | 3.1% | Only Gemini 3.1 Flash Lite Preview measured |
| Legal Research Bench (Vals AI) | Not measured | 3.4% | Only Gemini 3.1 Flash Lite Preview measured |
| Excel Modeling Benchmark (Vals AI) | Not measured | 8.6% | Only Gemini 3.1 Flash Lite Preview measured |
| τ²-Bench Telecom | 90.1% | Not measured | Only Trinity Large Thinking measured |
| Neither model has a result on the other 35 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index03
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| GPQA Diamond | Not measured | 81.1% | Only Gemini 3.1 Flash Lite Preview measured |
| MMMU Pro (Vals AI) | Not measured | 82.5% | Only Gemini 3.1 Flash Lite Preview measured |
| GPQA Diamond (Artificial Analysis run) | 75.2% | Not measured | Only Trinity Large Thinking measured |
| Humanity's Last Exam (Artificial Analysis run) | 15.8% | Not measured | Only Trinity Large Thinking measured |
| LMArena Text: hard prompts | 1342 | 1407 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: expert | 1359 | 1398 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: hard prompts in English | 1356 | 1403 | Gemini 3.1 Flash Lite Preview |
| LMArena Vision: diagrams | Not measured | 1242 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: homework | Not measured | 1271 | Only Gemini 3.1 Flash Lite Preview measured |
| Neither model has a result on the other 13 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| AIME | Not measured | 83.3% | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Text: math | 1365 | 1428 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: mathematical work | 1350 | 1417 | Gemini 3.1 Flash Lite Preview |
| Neither model has a result on the other 10 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index15
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| MMLU Pro | Not measured | 86.2% | Only Gemini 3.1 Flash Lite Preview measured |
| LegalBench (Vals AI) | Not measured | 83.8% | Only Gemini 3.1 Flash Lite Preview measured |
| CaseLaw (Vals AI) | 57.9% | 55.0% | Trinity Large Thinking |
| CorpFin (Vals AI) | 54.7% | 59.4% | Gemini 3.1 Flash Lite Preview |
| TaxEval (Vals AI) | Not measured | 71.8% | Only Gemini 3.1 Flash Lite Preview measured |
| MortgageTax (Vals AI) | Not measured | 68.0% | Only Gemini 3.1 Flash Lite Preview measured |
| MedCode (Vals AI) | Not measured | 47.6% | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Text: science | 1355 | 1425 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: medicine and healthcare | 1349 | 1428 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: legal and government | 1345 | 1418 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: business and finance | 1329 | 1389 | Gemini 3.1 Flash Lite Preview |
| FACTS Benchmark Suite | Not measured | 51.4% | Only Gemini 3.1 Flash Lite Preview measured |
| Neither model has a result on the other 6 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index53
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| Design Arena: websites | 1137 | 1083 | Trinity Large Thinking |
| Design Arena: UI components | 1045 | 1072 | Gemini 3.1 Flash Lite Preview |
| Design Arena: game dev | 1079 | 1029 | Trinity Large Thinking |
| Design Arena: data viz | 1098 | 1045 | Trinity Large Thinking |
| Design Arena: 3D | 1082 | 1048 | Trinity Large Thinking |
| Design Arena: all code categories | 1117 | 1072 | Trinity Large Thinking |
| Design Arena: SVG | 1017 | 1052 | Gemini 3.1 Flash Lite Preview |
| Design Arena: ASCII art | 1041 | 1167 | Gemini 3.1 Flash Lite Preview |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index017
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| SAGE (Vals AI) | Not measured | 49.5% | Only Gemini 3.1 Flash Lite Preview measured |
| MedScribe (Vals AI) | Not measured | 63.9% | Only Gemini 3.1 Flash Lite Preview measured |
| Vals Multimodal Index | Not measured | 41.4% | Only Gemini 3.1 Flash Lite Preview measured |
| IFBench | 56.3% | Not measured | Only Trinity Large Thinking measured |
| Long context reasoning (AA-LCR) | 38.0% | Not measured | Only Trinity Large Thinking measured |
| Surface Evolver Bench | 15.6% | Not measured | Only Trinity Large Thinking measured |
| LMArena Text | 1340 | 1416 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: instruction following | 1326 | 1377 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: creative writing | 1308 | 1401 | Gemini 3.1 Flash Lite Preview |
| LMArena Vision | Not measured | 1240 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Text: English | 1356 | 1414 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: non-English | 1325 | 1410 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Chinese | 1371 | 1460 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: German | 1356 | 1430 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Japanese | 1312 | 1413 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Korean | 1306 | 1392 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: French | 1366 | 1424 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Spanish | 1327 | 1421 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Russian | 1338 | 1420 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Polish | 1312 | 1443 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: multi-turn | 1320 | 1417 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: longer queries | 1318 | 1394 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: writing and language | 1317 | 1408 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: entertainment and media | 1296 | 1386 | Gemini 3.1 Flash Lite Preview |
| LMArena Vision: English | Not measured | 1232 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: Chinese | Not measured | 1278 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: reading text | Not measured | 1246 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: humor | Not measured | 1266 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: captioning | Not measured | 1259 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: recognizing things | Not measured | 1308 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: creative writing | Not measured | 1248 | Only Gemini 3.1 Flash Lite Preview measured |
| Neither model has a result on the other 15 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Trinity Large Thinking | Gemini 3.1 Flash Lite Preview | 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 costs less
Repository review
50K input + 3K output tokens
Trinity Large Thinking costs less
Agent loop
200K input + 10K output tokens
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 | Google Gemini 3.1 Flash Lite Preview |
|---|---|---|
| Maker | Arcee AI | |
| Weights | Open weights | No public weights listed |
| Released | April 1, 2026 | March 3, 2026 |
| Context window | 262K | 1.05M |
| Input $/Mtok | $0.25 | $0.25 |
| Output $/Mtok | $0.80 | $1.50 |
| Coding index | Not benchmarked | 22.7 |
| Independent measurements behind it | 1 | 3 |
| Cost per solved task | Not computable | $0.18 |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Trinity Large Thinking better than Gemini 3.1 Flash Lite Preview for coding?
Only Gemini 3.1 Flash Lite Preview has a coding score, 22.7 on the Vibe Coding Index; Trinity Large Thinking has none, so the two cannot be ranked on coding. Pick Trinity Large Thinking for output tokens 1.9x cheaper ($0.80 vs $1.50 per million) and work measured by CaseLaw (Vals AI) or Design Arena: websites, where it leads.
Which is cheaper, Trinity Large Thinking or Gemini 3.1 Flash Lite Preview?
Trinity Large Thinking costs $0.25 per million input tokens and $0.80 per million output tokens; Gemini 3.1 Flash Lite Preview costs $0.25 and $1.50. Cost per solved task is known for Gemini 3.1 Flash Lite Preview only.
Which has the bigger context window, Trinity Large Thinking or Gemini 3.1 Flash Lite Preview?
Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 262K.
How many benchmarks is the Trinity Large Thinking vs Gemini 3.1 Flash Lite Preview comparison based on?
44 benchmarks have a result for both models as of October 21, 2026. Trinity Large Thinking's coding index rests on 1 independent benchmark and Gemini 3.1 Flash Lite Preview's on 3. Where only one model has a result, the page says so instead of naming a winner.