Claude Opus 4.1 vs Gemini 3.1 Flash Lite Preview
Claude Opus 4.1 leads Gemini 3.1 Flash Lite Preview on the Artificial Analysis Intelligence Index, 22.8 to 15.6, and Gemini 3.1 Flash Lite Preview costs 50.0x less per output token ($1.50 vs $75.00 per million). Updated October 22, 2026; 53 benchmarks have a result for both.
Claude Opus 4.1 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; Claude Opus 4.1 has none, so the two cannot be ranked on coding.
Pick Claude Opus 4.1 for work measured by LMArena WebDev or LMArena Text: coding, where it leads.
- Shared results
- 53
- Claude Opus 4.1 only
- 23
- Gemini 3.1 Flash Lite Preview only
- 27
- Like-for-like categories
- 7 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
Claude Opus 4.1
Claude Opus 4.1 leads, 22.8 against 15.6.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Gemini 3.1 Flash Lite Preview has a AA Agentic Index result, 1.6.
Directional only
Reasoning
GPQA Diamond
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 81.1% against 76.3%.
Same board, both measured
Math
AIME
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview leads, 83.3% against 78.2%.
Same board, both measured
Knowledge
MMLU Pro
Claude Opus 4.1
Claude Opus 4.1 leads, 87.9% against 86.2%.
Same board, both measured
Web design
Design Arena: websites
Claude Opus 4.1
Claude Opus 4.1 leads, 1176 against 1082.
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 200K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Gemini 3.1 Flash Lite Preview
Claude Opus 4.1 $0.052, 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
- Claude Opus 4.1 not benchmarked, Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks.
- Widest category
- Coding, 12.3 points apart on average over 6 shared benchmarks.
- Widest single gap
- LMArena WebDev: HTML: Claude Opus 4.1 1399 against Gemini 3.1 Flash Lite Preview 1276, 20.4 points apart on a 0 to 100 scale.
- Output price
- Claude Opus 4.1 $75.00 against Gemini 3.1 Flash Lite Preview $1.50 per million output tokens, 50.0x apart.
- Context window
- Claude Opus 4.1 takes 200K 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 | Claude Opus 4.1 | Bars | Gemini 3.1 Flash Lite Preview | Ties |
|---|---|---|---|---|
| Coding | 4 | 1 | 1 tie | |
| Intelligence | 1 | 0 | ||
| Reasoning | 3 | 2 | ||
| Math | 2 | 1 | ||
| Knowledge | 4 | 6 | ||
| Web design | 7 | 0 | 1 tie | |
| General | 12 | 8 | ||
| All shared boards | 33 | 18 | 2 ties |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index41
| Benchmark | Claude Opus 4.1 | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| LMArena WebDev | 1390 | 1257 | Claude Opus 4.1 |
| AA Coding Index | Not measured | 34.7 | Only Gemini 3.1 Flash Lite Preview measured |
| LiveCodeBench (Vals AI) | 66.5% | 80.1% | Gemini 3.1 Flash Lite Preview |
| 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 |
| Terminal-Bench | 38.0% | Not measured | Only Claude Opus 4.1 measured |
| WeirdML | 45.9% | Not measured | Only Claude Opus 4.1 measured |
| Cybench | 42.0% | Not measured | Only Claude Opus 4.1 measured |
| ALE-Bench | Not measured | 797.7 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Text: coding | 1479 | 1400 | Claude Opus 4.1 |
| LMArena Text: software and IT | 1456 | 1413 | Claude Opus 4.1 |
| LMArena WebDev: React | Not measured | 1245 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena WebDev: HTML | 1399 | 1276 | Claude Opus 4.1 |
| LMArena WebDev: from an image | Not measured | 1336 | Only Gemini 3.1 Flash Lite Preview measured |
| SciCode | 4.6% | 4.6% | Tie |
| Neither model has a result on the other 25 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Opus 4.1 | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| AA Intelligence Index | 22.8 | 15.6 | Claude Opus 4.1 |
| Epoch Capabilities Index | 144.1 | Not measured | Only Claude Opus 4.1 measured |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
| Benchmark | Claude Opus 4.1 | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| AA Agentic Index | Not measured | 1.6 | Only Gemini 3.1 Flash Lite Preview measured |
| 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 |
| METR time horizons | 66.8% | Not measured | Only Claude Opus 4.1 measured |
| GDPval | 43.6% | Not measured | Only Claude Opus 4.1 measured |
| DeepResearch Bench | 48.3% | Not measured | Only Claude Opus 4.1 measured |
| Neither model has a result on the other 34 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index32
| Benchmark | Claude Opus 4.1 | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| GPQA Diamond | 76.3% | 81.1% | Gemini 3.1 Flash Lite Preview |
| MMMU Pro (Vals AI) | 77.5% | 82.5% | Gemini 3.1 Flash Lite Preview |
| GPQA Diamond (Epoch AI run) | 77.3% | Not measured | Only Claude Opus 4.1 measured |
| SimpleBench | 60.0% | Not measured | Only Claude Opus 4.1 measured |
| Mystery game puzzles | 21.0% | Not measured | Only Claude Opus 4.1 measured |
| EBR-bench | 7.9% | Not measured | Only Claude Opus 4.1 measured |
| VPCT | 35.0% | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: hard prompts | 1442 | 1407 | Claude Opus 4.1 |
| LMArena Text: expert | 1438 | 1398 | Claude Opus 4.1 |
| LMArena Text: hard prompts in English | 1451 | 1403 | Claude Opus 4.1 |
| 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 11 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index21
| Benchmark | Claude Opus 4.1 | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| AIME | 78.2% | 83.3% | Gemini 3.1 Flash Lite Preview |
| MATH 500 (Vals AI) | 95.4% | Not measured | Only Claude Opus 4.1 measured |
| MGSM (Vals AI) | 94.4% | Not measured | Only Claude Opus 4.1 measured |
| OTIS Mock AIME | 68.9% | Not measured | Only Claude Opus 4.1 measured |
| FrontierMath, tiers 1 to 3 | 12.6% | Not measured | Only Claude Opus 4.1 measured |
| FrontierMath, tier 4 | 2.4% | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: math | 1431 | 1428 | Claude Opus 4.1 |
| LMArena Text: mathematical work | 1434 | 1417 | Claude Opus 4.1 |
| Neither model has a result on the other 6 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index46
| Benchmark | Claude Opus 4.1 | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| MMLU Pro | 87.9% | 86.2% | Claude Opus 4.1 |
| LegalBench (Vals AI) | 83.5% | 83.8% | Gemini 3.1 Flash Lite Preview |
| CaseLaw (Vals AI) | Not measured | 55.0% | Only Gemini 3.1 Flash Lite Preview measured |
| CorpFin (Vals AI) | Not measured | 59.4% | Only Gemini 3.1 Flash Lite Preview measured |
| TaxEval (Vals AI) | 73.7% | 71.8% | Claude Opus 4.1 |
| MortgageTax (Vals AI) | 61.1% | 68.0% | Gemini 3.1 Flash Lite Preview |
| MedQA (Vals AI) | 93.6% | Not measured | Only Claude Opus 4.1 measured |
| MedCode (Vals AI) | 47.2% | 47.6% | Gemini 3.1 Flash Lite Preview |
| LMArena Text: science | 1422 | 1425 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: medicine and healthcare | 1416 | 1428 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: legal and government | 1421 | 1418 | Claude Opus 4.1 |
| LMArena Text: business and finance | 1406 | 1389 | Claude Opus 4.1 |
| FACTS Benchmark Suite | 40.4% | 51.4% | Gemini 3.1 Flash Lite Preview |
| PRBench Finance | 35.2% | Not measured | Only Claude Opus 4.1 measured |
| PRBench Legal | 34.0% | Not measured | Only Claude Opus 4.1 measured |
| Neither model has a result on the other 5 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index70
| Benchmark | Claude Opus 4.1 | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| Design Arena: websites | 1176 | 1082 | Claude Opus 4.1 |
| Design Arena: UI components | 1162 | 1069 | Claude Opus 4.1 |
| Design Arena: game dev | 1171 | 1029 | Claude Opus 4.1 |
| Design Arena: data viz | 1166 | 1045 | Claude Opus 4.1 |
| Design Arena: 3D | 1152 | 1047 | Claude Opus 4.1 |
| Design Arena: all code categories | 1170 | 1071 | Claude Opus 4.1 |
| Design Arena: SVG | 1151 | 1052 | Claude Opus 4.1 |
| Design Arena: ASCII art | 1167 | 1167 | Tie |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index128
| Benchmark | Claude Opus 4.1 | Gemini 3.1 Flash Lite Preview | Leader |
|---|---|---|---|
| SAGE (Vals AI) | 31.4% | 49.5% | Gemini 3.1 Flash Lite Preview |
| MedScribe (Vals AI) | 73.9% | 63.9% | Claude Opus 4.1 |
| Vals Multimodal Index | Not measured | 41.4% | Only Gemini 3.1 Flash Lite Preview measured |
| DTBench | 80.0% | Not measured | Only Claude Opus 4.1 measured |
| LMCA | 37.1% | Not measured | Only Claude Opus 4.1 measured |
| Creative writing (Lech Mazur) | 84.7% | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text | 1419 | 1416 | Claude Opus 4.1 |
| LMArena Text: instruction following | 1435 | 1377 | Claude Opus 4.1 |
| LMArena Text: creative writing | 1412 | 1401 | Claude Opus 4.1 |
| LMArena Vision | Not measured | 1240 | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Text: English | 1433 | 1414 | Claude Opus 4.1 |
| LMArena Text: non-English | 1405 | 1410 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Chinese | 1427 | 1460 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: German | 1413 | 1430 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Japanese | 1377 | 1413 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: Korean | 1381 | 1392 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: French | 1433 | 1424 | Claude Opus 4.1 |
| LMArena Text: Spanish | 1448 | 1421 | Claude Opus 4.1 |
| LMArena Text: Russian | 1422 | 1420 | Claude Opus 4.1 |
| LMArena Text: Polish | 1413 | 1443 | Gemini 3.1 Flash Lite Preview |
| LMArena Text: multi-turn | 1444 | 1417 | Claude Opus 4.1 |
| LMArena Text: longer queries | 1455 | 1394 | Claude Opus 4.1 |
| LMArena Text: writing and language | 1418 | 1408 | Claude Opus 4.1 |
| LMArena Text: entertainment and media | 1398 | 1386 | Claude Opus 4.1 |
| 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 |
| MultiChallenge | 57.2% | 60.6% | Gemini 3.1 Flash Lite Preview |
| Neither model has a result on the other 16 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Opus 4.1 | 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
Gemini 3.1 Flash Lite Preview costs less
Repository review
50K input + 3K output tokens
Gemini 3.1 Flash Lite Preview costs less
Agent loop
200K input + 10K output tokens
Gemini 3.1 Flash Lite Preview 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 | Anthropic Claude Opus 4.1 | Google Gemini 3.1 Flash Lite Preview |
|---|---|---|
| Maker | Anthropic | |
| Weights | No public weights listed | No public weights listed |
| Released | August 5, 2025 | March 3, 2026 |
| Context window | 200K | 1.05M |
| Input $/Mtok | $15.00 | $0.25 |
| Output $/Mtok | $75.00 | $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 Claude Opus 4.1 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; Claude Opus 4.1 has none, so the two cannot be ranked on coding. Pick Claude Opus 4.1 for work measured by LMArena WebDev or LMArena Text: coding, where it leads.
Which is cheaper, Claude Opus 4.1 or Gemini 3.1 Flash Lite Preview?
Claude Opus 4.1 costs $15.00 per million input tokens and $75.00 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, Claude Opus 4.1 or Gemini 3.1 Flash Lite Preview?
Gemini 3.1 Flash Lite Preview, with 1.05M tokens against 200K.
How many benchmarks is the Claude Opus 4.1 vs Gemini 3.1 Flash Lite Preview comparison based on?
53 benchmarks have a result for both models as of October 22, 2026. Claude Opus 4.1'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.