Gemini 3.1 Flash Lite vs GPT-4.1
Gemini 3.1 Flash Lite costs 5.3x less per output token than GPT-4.1 ($1.50 vs $8.00 per million). Updated October 21, 2026; 14 benchmarks have a result for both.
Gemini 3.1 Flash Lite or GPT-4.1: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick Gemini 3.1 Flash Lite for output tokens 5.3x cheaper ($1.50 vs $8.00 per million) and a larger context window (1.05M against 1.05M tokens).
- Shared results
- 14
- Gemini 3.1 Flash Lite only
- 2
- GPT-4.1 only
- 78
- Like-for-like categories
- 6 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
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
No call
Only GPT-4.1 has a AA Intelligence Index result, 12.7.
Directional only
Reasoning
GPQA Diamond
No call
Only GPT-4.1 has a GPQA Diamond result, 65.4%.
Directional only
Math
AIME
No call
Only GPT-4.1 has a AIME result, 39.6%.
Directional only
Knowledge
MMLU Pro
No call
Only GPT-4.1 has a MMLU Pro result, 80.5%.
Directional only
Web design
Design Arena: websites
No call
Only GPT-4.1 has a Design Arena: websites result, 1039.
Directional only
Long documents
Listed context window
Gemini 3.1 Flash Lite
Gemini 3.1 Flash Lite takes 1.05M tokens against 1.05M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Gemini 3.1 Flash Lite
Gemini 3.1 Flash Lite $0.0010, GPT-4.1 $0.0060 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only GPT-4.1 has the number, $0.37.
Directional only
At a glance
- Coding index
- Gemini 3.1 Flash Lite not benchmarked, GPT-4.1 not benchmarked.
- Widest category
- Math, 31.7 points apart on average over 2 shared benchmarks.
- Widest single gap
- OTIS Mock AIME: Gemini 3.1 Flash Lite 80.0% against GPT-4.1 38.3%, 41.7 points apart on a 0 to 100 scale.
- Output price
- Gemini 3.1 Flash Lite $1.50 against GPT-4.1 $8.00 per million output tokens, 5.3x apart.
- Context window
- Gemini 3.1 Flash Lite takes 1.05M tokens, GPT-4.1 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 | Gemini 3.1 Flash Lite | Bars | GPT-4.1 | Ties |
|---|---|---|---|---|
| Coding | 2 | 0 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 0 | 1 | ||
| Reasoning | 4 | 0 | ||
| Math | 2 | 0 | ||
| General | 4 | 0 | ||
| All shared boards | 13 | 1 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index20
| Benchmark | Gemini 3.1 Flash Lite | GPT-4.1 | Leader |
|---|---|---|---|
| Aider polyglot | Not measured | 52.4% | Only GPT-4.1 measured |
| SWE-bench Verified | Not measured | 39.6% | Only GPT-4.1 measured |
| SWE-bench Multimodal | Not measured | 31.1% | Only GPT-4.1 measured |
| LiveCodeBench (Vals AI) | Not measured | 54.7% | Only GPT-4.1 measured |
| LiveCodeBench (Artificial Analysis run) | Not measured | 45.7% | Only GPT-4.1 measured |
| SciCode | 43.4% | Not measured | Only Gemini 3.1 Flash Lite measured |
| Terminal-Bench Hard (Artificial Analysis run) | 24.2% | 13.6% | Gemini 3.1 Flash Lite |
| WeirdML | 52.2% | 39.0% | Gemini 3.1 Flash Lite |
| ALE-Bench | Not measured | 558.1 | Only GPT-4.1 measured |
| LMArena Text: coding | Not measured | 1390 | Only GPT-4.1 measured |
| LMArena Text: software and IT | Not measured | 1391 | Only GPT-4.1 measured |
| SciCode | Not measured | 4.6% | Only GPT-4.1 measured |
| Neither model has a result on the other 27 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Gemini 3.1 Flash Lite | GPT-4.1 | Leader |
|---|---|---|---|
| AA Intelligence Index | Not measured | 12.7 | Only GPT-4.1 measured |
| Epoch Capabilities Index | 144.3 | 136.7 | Gemini 3.1 Flash Lite |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Gemini 3.1 Flash Lite | GPT-4.1 | Leader |
|---|---|---|---|
| τ²-Bench Telecom | 31.3% | 47.1% | GPT-4.1 |
| DeepResearch Bench | 37.3% | Not measured | Only Gemini 3.1 Flash Lite measured |
| Berkeley Function Calling Leaderboard (BFCL) | Not measured | 54.0% | Only GPT-4.1 measured |
| BrowseComp-Plus | Not measured | 36.4% | Only GPT-4.1 measured |
| Neither model has a result on the other 37 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Gemini 3.1 Flash Lite | GPT-4.1 | Leader |
|---|---|---|---|
| GPQA Diamond | Not measured | 65.4% | Only GPT-4.1 measured |
| MMMU Pro (Vals AI) | Not measured | 72.4% | Only GPT-4.1 measured |
| GPQA Diamond (Artificial Analysis run) | 82.2% | 66.6% | Gemini 3.1 Flash Lite |
| Humanity's Last Exam (Artificial Analysis run) | 17.2% | 4.2% | Gemini 3.1 Flash Lite |
| GPQA Diamond (Epoch AI run) | 81.8% | 66.9% | Gemini 3.1 Flash Lite |
| ARC-AGI | Not measured | 5.5% | Only GPT-4.1 measured |
| ARC-AGI-2 | Not measured | 0.4% | Only GPT-4.1 measured |
| SimpleBench | Not measured | 27.0% | Only GPT-4.1 measured |
| Chess puzzles | Not measured | 3.0% | Only GPT-4.1 measured |
| LMArena Text: hard prompts | Not measured | 1384 | Only GPT-4.1 measured |
| LMArena Text: expert | Not measured | 1364 | Only GPT-4.1 measured |
| LMArena Text: hard prompts in English | Not measured | 1393 | Only GPT-4.1 measured |
| LMArena Vision: diagrams | Not measured | 1215 | Only GPT-4.1 measured |
| LMArena Vision: homework | Not measured | 1248 | Only GPT-4.1 measured |
| Kagi LLM Benchmark | 67.2% | 52.3% | Gemini 3.1 Flash Lite |
| Neither model has a result on the other 7 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Gemini 3.1 Flash Lite | GPT-4.1 | Leader |
|---|---|---|---|
| AIME | Not measured | 39.6% | Only GPT-4.1 measured |
| MATH 500 (Vals AI) | Not measured | 87.2% | Only GPT-4.1 measured |
| MGSM (Vals AI) | Not measured | 87.7% | Only GPT-4.1 measured |
| AA Math Index | Not measured | 34.7 | Only GPT-4.1 measured |
| AIME 2025 (Artificial Analysis run) | Not measured | 34.7% | Only GPT-4.1 measured |
| OTIS Mock AIME | 80.0% | 38.3% | Gemini 3.1 Flash Lite |
| FrontierMath, tiers 1 to 3 | 27.7% | 6.0% | Gemini 3.1 Flash Lite |
| MATH level 5 | Not measured | 83.0% | Only GPT-4.1 measured |
| LMArena Text: math | Not measured | 1369 | Only GPT-4.1 measured |
| LMArena Text: mathematical work | Not measured | 1360 | Only GPT-4.1 measured |
| Neither model has a result on the other 3 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index15 boards, none shared
| Benchmark | Gemini 3.1 Flash Lite | GPT-4.1 | Leader |
|---|---|---|---|
| MMLU Pro | Not measured | 80.5% | Only GPT-4.1 measured |
| LegalBench (Vals AI) | Not measured | 83.1% | Only GPT-4.1 measured |
| CaseLaw (Vals AI) | Not measured | 69.9% | Only GPT-4.1 measured |
| CorpFin (Vals AI) | Not measured | 63.0% | Only GPT-4.1 measured |
| TaxEval (Vals AI) | Not measured | 75.1% | Only GPT-4.1 measured |
| MortgageTax (Vals AI) | Not measured | 65.9% | Only GPT-4.1 measured |
| MedQA (Vals AI) | Not measured | 91.2% | Only GPT-4.1 measured |
| MMLU Pro (Artificial Analysis run) | Not measured | 80.6% | Only GPT-4.1 measured |
| SimpleQA Verified | Not measured | 31.1% | Only GPT-4.1 measured |
| GeoBench | Not measured | 72.0% | Only GPT-4.1 measured |
| LMArena Text: science | Not measured | 1382 | Only GPT-4.1 measured |
| LMArena Text: medicine and healthcare | Not measured | 1379 | Only GPT-4.1 measured |
| LMArena Text: legal and government | Not measured | 1399 | Only GPT-4.1 measured |
| LMArena Text: business and finance | Not measured | 1369 | Only GPT-4.1 measured |
| FACTS Benchmark Suite | Not measured | 45.8% | Only GPT-4.1 measured |
| Neither model has a result on the other 3 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
| Benchmark | Gemini 3.1 Flash Lite | GPT-4.1 | Leader |
|---|---|---|---|
| Design Arena: websites | Not measured | 1039 | Only GPT-4.1 measured |
| Design Arena: UI components | Not measured | 1000 | Only GPT-4.1 measured |
| Design Arena: game dev | Not measured | 1080 | Only GPT-4.1 measured |
| Design Arena: data viz | Not measured | 1104 | Only GPT-4.1 measured |
| Design Arena: 3D | Not measured | 850 | Only GPT-4.1 measured |
| Design Arena: all code categories | Not measured | 1026 | Only GPT-4.1 measured |
| Neither model has a result on the other 3 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Gemini 3.1 Flash Lite | GPT-4.1 | Leader |
|---|---|---|---|
| IFBench | 77.2% | 43.0% | Gemini 3.1 Flash Lite |
| Long context reasoning (AA-LCR) | 74.3% | 68.3% | Gemini 3.1 Flash Lite |
| DTBench | 76.8% | 68.3% | Gemini 3.1 Flash Lite |
| LMCA | 35.0% | 25.6% | Gemini 3.1 Flash Lite |
| Fiction.LiveBench | Not measured | 63.9% | Only GPT-4.1 measured |
| LMArena Text | Not measured | 1383 | Only GPT-4.1 measured |
| LMArena Text: instruction following | Not measured | 1367 | Only GPT-4.1 measured |
| LMArena Text: creative writing | Not measured | 1363 | Only GPT-4.1 measured |
| LMArena Vision | Not measured | 1210 | Only GPT-4.1 measured |
| LMArena Text: English | Not measured | 1392 | Only GPT-4.1 measured |
| LMArena Text: non-English | Not measured | 1370 | Only GPT-4.1 measured |
| LMArena Text: Chinese | Not measured | 1382 | Only GPT-4.1 measured |
| LMArena Text: German | Not measured | 1381 | Only GPT-4.1 measured |
| LMArena Text: Japanese | Not measured | 1319 | Only GPT-4.1 measured |
| LMArena Text: Korean | Not measured | 1338 | Only GPT-4.1 measured |
| LMArena Text: French | Not measured | 1382 | Only GPT-4.1 measured |
| LMArena Text: Spanish | Not measured | 1376 | Only GPT-4.1 measured |
| LMArena Text: Russian | Not measured | 1377 | Only GPT-4.1 measured |
| LMArena Text: Polish | Not measured | 1389 | Only GPT-4.1 measured |
| LMArena Text: multi-turn | Not measured | 1397 | Only GPT-4.1 measured |
| LMArena Text: longer queries | Not measured | 1385 | Only GPT-4.1 measured |
| LMArena Text: writing and language | Not measured | 1371 | Only GPT-4.1 measured |
| LMArena Text: entertainment and media | Not measured | 1365 | Only GPT-4.1 measured |
| LMArena Vision: English | Not measured | 1209 | Only GPT-4.1 measured |
| LMArena Vision: Chinese | Not measured | 1226 | Only GPT-4.1 measured |
| LMArena Vision: reading text | Not measured | 1218 | Only GPT-4.1 measured |
| LMArena Vision: humor | Not measured | 1196 | Only GPT-4.1 measured |
| LMArena Vision: captioning | Not measured | 1207 | Only GPT-4.1 measured |
| LMArena Vision: recognizing things | Not measured | 1208 | Only GPT-4.1 measured |
| LMArena Vision: creative writing | Not measured | 1210 | Only GPT-4.1 measured |
| 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 | Gemini 3.1 Flash Lite | GPT-4.1 | 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 costs less
Repository review
50K input + 3K output tokens
Gemini 3.1 Flash Lite costs less
Agent loop
200K input + 10K output tokens
Gemini 3.1 Flash Lite 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 | Google Gemini 3.1 Flash Lite | OpenAI GPT-4.1 |
|---|---|---|
| Maker | OpenAI | |
| Weights | No public weights listed | No public weights listed |
| Released | May 7, 2026 | April 14, 2025 |
| Context window | 1.05M | 1.05M |
| Input $/Mtok | $0.25 | $2.00 |
| Output $/Mtok | $1.50 | $8.00 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 0 |
| Cost per solved task | Not computable | $0.37 |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Gemini 3.1 Flash Lite better than GPT-4.1 for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Gemini 3.1 Flash Lite for output tokens 5.3x cheaper ($1.50 vs $8.00 per million) and a larger context window (1.05M against 1.05M tokens).
Which is cheaper, Gemini 3.1 Flash Lite or GPT-4.1?
Gemini 3.1 Flash Lite costs $0.25 per million input tokens and $1.50 per million output tokens; GPT-4.1 costs $2.00 and $8.00. Cost per solved task is known for GPT-4.1 only.
Which has the bigger context window, Gemini 3.1 Flash Lite or GPT-4.1?
Gemini 3.1 Flash Lite, with 1.05M tokens against 1.05M.
How many benchmarks is the Gemini 3.1 Flash Lite vs GPT-4.1 comparison based on?
14 benchmarks have a result for both models as of October 21, 2026. Gemini 3.1 Flash Lite's coding index rests on 0 independent benchmarks and GPT-4.1's on 0. Where only one model has a result, the page says so instead of naming a winner.