GPT-4.1 Nano vs o4 Mini
o4 Mini leads GPT-4.1 Nano on the Artificial Analysis Intelligence Index, 16.7 to 7.8, and GPT-4.1 Nano costs 11.0x less per output token ($0.40 vs $4.40 per million). Updated October 22, 2026; 70 benchmarks have a result for both.
GPT-4.1 Nano or o4 Mini: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick GPT-4.1 Nano for output tokens 11.0x cheaper ($0.40 vs $4.40 per million) and a larger context window (1.05M against 200K tokens).
- Shared results
- 70
- GPT-4.1 Nano only
- 1
- o4 Mini only
- 28
- 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
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
o4 Mini
o4 Mini leads, 16.7 against 7.8.
Same board, both measured
Reasoning
GPQA Diamond
o4 Mini
o4 Mini leads, 74.5% against 50.8%.
Same board, both measured
Math
AIME
o4 Mini
o4 Mini leads, 83.7% against 26.5%.
Same board, both measured
Knowledge
MMLU Pro
o4 Mini
o4 Mini leads, 80.6% against 63.5%.
Same board, both measured
Web design
Design Arena: websites
o4 Mini
o4 Mini leads, 985 against 972.
Same board, both measured
Long documents
Listed context window
GPT-4.1 Nano
GPT-4.1 Nano takes 1.05M tokens against 200K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
GPT-4.1 Nano
GPT-4.1 Nano $0.0003, o4 Mini $0.0033 per turn.
List prices
At a glance
- Coding index
- GPT-4.1 Nano not benchmarked, o4 Mini not benchmarked.
- Widest category
- Math, 38.4 points apart on average over 9 shared benchmarks.
- Widest single gap
- AA Math Index: GPT-4.1 Nano 24.0 against o4 Mini 90.7, 66.7 points apart on a 0 to 100 scale.
- Output price
- GPT-4.1 Nano $0.40 against o4 Mini $4.40 per million output tokens, 11.0x apart.
- Context window
- GPT-4.1 Nano takes 1.05M tokens, o4 Mini 200K.
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 | GPT-4.1 Nano | Bars | o4 Mini | Ties |
|---|---|---|---|---|
| Coding | 0 | 7 | ||
| Intelligence | 0 | 2 | ||
| Agentic work | 0 | 2 | ||
| Reasoning | 0 | 12 | ||
| Math | 0 | 9 | ||
| Knowledge | 0 | 12 | ||
| Web design | 1 | 5 | ||
| General | 0 | 20 | ||
| All shared boards | 1 | 69 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index07
| Benchmark | GPT-4.1 Nano | o4 Mini | Leader |
|---|---|---|---|
| Aider polyglot | 8.9% | 72.0% | o4 Mini |
| SWE-bench Verified | Not measured | 64.6% | Only o4 Mini measured |
| SWE-bench Multimodal | Not measured | 33.9% | Only o4 Mini measured |
| AA Coding Index | 11.1 | Not measured | Only GPT-4.1 Nano measured |
| LiveCodeBench (Vals AI) | 42.7% | 82.2% | o4 Mini |
| LiveCodeBench (Artificial Analysis run) | 32.6% | 85.9% | o4 Mini |
| Terminal-Bench Hard (Artificial Analysis run) | 3.8% | 15.2% | o4 Mini |
| GSO-Bench | Not measured | 3.6% | Only o4 Mini measured |
| WeirdML | 19.0% | 52.6% | o4 Mini |
| LMArena Text: coding | 1306 | 1368 | o4 Mini |
| LMArena Text: software and IT | 1305 | 1367 | o4 Mini |
| SciCode | Not measured | 10.8% | Only o4 Mini measured |
| Neither model has a result on the other 27 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | GPT-4.1 Nano | o4 Mini | Leader |
|---|---|---|---|
| AA Intelligence Index | 7.8 | 16.7 | o4 Mini |
| Epoch Capabilities Index | 129.5 | 145.5 | o4 Mini |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | GPT-4.1 Nano | o4 Mini | Leader |
|---|---|---|---|
| τ²-Bench Telecom | 17.3% | 55.6% | o4 Mini |
| METR time horizons | Not measured | 63.9% | Only o4 Mini measured |
| Berkeley Function Calling Leaderboard (BFCL) | 33.1% | 53.2% | o4 Mini |
| Neither model has a result on the other 38 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index012
| Benchmark | GPT-4.1 Nano | o4 Mini | Leader |
|---|---|---|---|
| GPQA Diamond | 50.8% | 74.5% | o4 Mini |
| MMMU Pro (Vals AI) | 55.0% | 79.7% | o4 Mini |
| GPQA Diamond (Artificial Analysis run) | 51.2% | 78.4% | o4 Mini |
| Humanity's Last Exam (Artificial Analysis run) | 3.8% | 16.5% | o4 Mini |
| GPQA Diamond (Epoch AI run) | 48.9% | 79.6% | o4 Mini |
| ARC-AGI | 0.0% | 58.7% | o4 Mini |
| ARC-AGI-2 | 0.0% | 6.1% | o4 Mini |
| SimpleBench | Not measured | 38.7% | Only o4 Mini measured |
| Chess puzzles | 0.0% | 22.0% | o4 Mini |
| Mystery game puzzles | Not measured | 5.0% | Only o4 Mini measured |
| VPCT | Not measured | 57.5% | Only o4 Mini measured |
| LMArena Text: hard prompts | 1286 | 1351 | o4 Mini |
| LMArena Text: expert | 1271 | 1343 | o4 Mini |
| LMArena Text: hard prompts in English | 1293 | 1366 | o4 Mini |
| LMArena Vision: diagrams | Not measured | 1197 | Only o4 Mini measured |
| LMArena Vision: homework | Not measured | 1234 | Only o4 Mini measured |
| Kagi LLM Benchmark | 33.3% | 67.6% | o4 Mini |
| Neither model has a result on the other 5 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index09
| Benchmark | GPT-4.1 Nano | o4 Mini | Leader |
|---|---|---|---|
| AIME | 26.5% | 83.7% | o4 Mini |
| MATH 500 (Vals AI) | 80.2% | 94.2% | o4 Mini |
| MGSM (Vals AI) | 69.3% | 93.4% | o4 Mini |
| AA Math Index | 24.0 | 90.7 | o4 Mini |
| AIME 2025 (Artificial Analysis run) | 24.0% | 90.7% | o4 Mini |
| OTIS Mock AIME | 28.9% | 81.7% | o4 Mini |
| FrontierMath, tiers 1 to 3 | Not measured | 36.1% | Only o4 Mini measured |
| FrontierMath, tier 4 | Not measured | 4.9% | Only o4 Mini measured |
| MATH level 5 | 70.0% | 97.8% | o4 Mini |
| LMArena Text: math | 1274 | 1389 | o4 Mini |
| LMArena Text: mathematical work | 1274 | 1379 | o4 Mini |
| Neither model has a result on the other 2 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index012
| Benchmark | GPT-4.1 Nano | o4 Mini | Leader |
|---|---|---|---|
| MMLU Pro | 63.5% | 80.6% | o4 Mini |
| LegalBench (Vals AI) | 61.1% | 79.2% | o4 Mini |
| CorpFin (Vals AI) | 42.1% | 59.0% | o4 Mini |
| TaxEval (Vals AI) | 60.8% | 74.8% | o4 Mini |
| MortgageTax (Vals AI) | 52.8% | 64.8% | o4 Mini |
| MedQA (Vals AI) | 68.2% | 96.0% | o4 Mini |
| MedCode (Vals AI) | Not measured | 33.8% | Only o4 Mini measured |
| MMLU Pro (Artificial Analysis run) | 65.7% | 83.2% | o4 Mini |
| SimpleQA Verified | 6.0% | 19.6% | o4 Mini |
| GeoBench | Not measured | 64.0% | Only o4 Mini measured |
| LMArena Text: science | 1297 | 1354 | o4 Mini |
| LMArena Text: medicine and healthcare | 1276 | 1361 | o4 Mini |
| LMArena Text: legal and government | 1300 | 1350 | o4 Mini |
| LMArena Text: business and finance | 1267 | 1325 | o4 Mini |
| FACTS Benchmark Suite | Not measured | 28.1% | Only o4 Mini measured |
| Neither model has a result on the other 3 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index15
| Benchmark | GPT-4.1 Nano | o4 Mini | Leader |
|---|---|---|---|
| Design Arena: websites | 972 | 985 | o4 Mini |
| Design Arena: UI components | 913 | 983 | o4 Mini |
| Design Arena: game dev | 970 | 1003 | o4 Mini |
| Design Arena: data viz | 891 | 991 | o4 Mini |
| Design Arena: 3D | 924 | 854 | GPT-4.1 Nano |
| Design Arena: all code categories | 962 | 976 | o4 Mini |
| Neither model has a result on the other 3 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index020
| Benchmark | GPT-4.1 Nano | o4 Mini | Leader |
|---|---|---|---|
| SAGE (Vals AI) | Not measured | 41.1% | Only o4 Mini measured |
| MedScribe (Vals AI) | Not measured | 69.1% | Only o4 Mini measured |
| IFBench | 32.0% | 68.7% | o4 Mini |
| Long context reasoning (AA-LCR) | 20.3% | 61.0% | o4 Mini |
| DTBench | 52.5% | 77.6% | o4 Mini |
| LMCA | 5.5% | 26.5% | o4 Mini |
| Fiction.LiveBench | 25.0% | 77.8% | o4 Mini |
| Creative writing (Lech Mazur) | Not measured | 75.0% | Only o4 Mini measured |
| LMArena Text | 1285 | 1353 | o4 Mini |
| LMArena Text: instruction following | 1266 | 1320 | o4 Mini |
| LMArena Text: creative writing | 1260 | 1294 | o4 Mini |
| LMArena Vision | 1063 | 1194 | o4 Mini |
| LMArena Text: English | 1303 | 1367 | o4 Mini |
| LMArena Text: non-English | 1260 | 1337 | o4 Mini |
| LMArena Text: Chinese | 1270 | 1354 | o4 Mini |
| LMArena Text: German | 1288 | 1336 | o4 Mini |
| LMArena Text: Japanese | 1198 | 1308 | o4 Mini |
| LMArena Text: Korean | Not measured | 1312 | Only o4 Mini measured |
| LMArena Text: French | Not measured | 1364 | Only o4 Mini measured |
| LMArena Text: Spanish | Not measured | 1346 | Only o4 Mini measured |
| LMArena Text: Russian | 1261 | 1334 | o4 Mini |
| LMArena Text: Polish | Not measured | 1358 | Only o4 Mini measured |
| LMArena Text: multi-turn | 1277 | 1350 | o4 Mini |
| LMArena Text: longer queries | 1283 | 1315 | o4 Mini |
| LMArena Text: writing and language | 1261 | 1316 | o4 Mini |
| LMArena Text: entertainment and media | 1243 | 1308 | o4 Mini |
| LMArena Vision: English | 1101 | 1200 | o4 Mini |
| LMArena Vision: Chinese | Not measured | 1218 | Only o4 Mini measured |
| LMArena Vision: reading text | Not measured | 1197 | Only o4 Mini measured |
| LMArena Vision: humor | Not measured | 1199 | Only o4 Mini measured |
| LMArena Vision: captioning | Not measured | 1204 | Only o4 Mini measured |
| LMArena Vision: recognizing things | Not measured | 1218 | Only o4 Mini measured |
| LMArena Vision: creative writing | Not measured | 1166 | Only o4 Mini measured |
| Neither model has a result on the other 13 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | GPT-4.1 Nano | o4 Mini | 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
GPT-4.1 Nano costs less
Repository review
50K input + 3K output tokens
GPT-4.1 Nano costs less
Agent loop
200K input + 10K output tokens
GPT-4.1 Nano 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 | OpenAI GPT-4.1 Nano | OpenAI o4 Mini |
|---|---|---|
| Maker | OpenAI | OpenAI |
| Weights | No public weights listed | No public weights listed |
| Released | April 14, 2025 | April 16, 2025 |
| Context window | 1.05M | 200K |
| Input $/Mtok | $0.10 | $1.10 |
| Output $/Mtok | $0.40 | $4.40 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is GPT-4.1 Nano better than o4 Mini for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick GPT-4.1 Nano for output tokens 11.0x cheaper ($0.40 vs $4.40 per million) and a larger context window (1.05M against 200K tokens).
Which is cheaper, GPT-4.1 Nano or o4 Mini?
GPT-4.1 Nano costs $0.10 per million input tokens and $0.40 per million output tokens; o4 Mini costs $1.10 and $4.40. Cost per solved task is known for neither of them.
Which has the bigger context window, GPT-4.1 Nano or o4 Mini?
GPT-4.1 Nano, with 1.05M tokens against 200K.
How many benchmarks is the GPT-4.1 Nano vs o4 Mini comparison based on?
70 benchmarks have a result for both models as of October 22, 2026. GPT-4.1 Nano's coding index rests on 0 independent benchmarks and o4 Mini's on 0. Where only one model has a result, the page says so instead of naming a winner.