Claude Opus 4.1 vs GPT-4o (2024-11-20)
Claude Opus 4.1 leads GPT-4o (2024-11-20) on the Artificial Analysis Intelligence Index, 22.8 to 8.4, and GPT-4o (2024-11-20) costs 7.5x less per output token ($10.00 vs $75.00 per million). Updated October 22, 2026; 17 benchmarks have a result for both.
Claude Opus 4.1 or GPT-4o (2024-11-20): which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick Claude Opus 4.1 for a larger context window (200K against 128K tokens) and work measured by VPCT or TaxEval (Vals AI), where it leads.
- Shared results
- 17
- Claude Opus 4.1 only
- 59
- GPT-4o (2024-11-20) only
- 7
- 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
Claude Opus 4.1
Claude Opus 4.1 leads, 22.8 against 8.4.
Same board, both measured
Reasoning
GPQA Diamond
Claude Opus 4.1
Claude Opus 4.1 leads, 76.3% against 53.8%.
Same board, both measured
Math
AIME
Claude Opus 4.1
Claude Opus 4.1 leads, 78.2% against 11.9%.
Same board, both measured
Knowledge
MMLU Pro
Claude Opus 4.1
Claude Opus 4.1 leads, 87.9% against 72.6%.
Same board, both measured
Web design
Design Arena: websites
No call
Only Claude Opus 4.1 has a Design Arena: websites result, 1176.
Directional only
Long documents
Listed context window
Claude Opus 4.1
Claude Opus 4.1 takes 200K tokens against 128K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
GPT-4o (2024-11-20)
Claude Opus 4.1 $0.052, GPT-4o (2024-11-20) $0.0075 per turn.
List prices
At a glance
- Coding index
- Claude Opus 4.1 not benchmarked, GPT-4o (2024-11-20) not benchmarked.
- Widest category
- Math, 38.6 points apart on average over 4 shared benchmarks.
- Widest single gap
- AIME: Claude Opus 4.1 78.2% against GPT-4o (2024-11-20) 11.9%, 66.3 points apart on a 0 to 100 scale.
- Output price
- Claude Opus 4.1 $75.00 against GPT-4o (2024-11-20) $10.00 per million output tokens, 7.5x apart.
- Context window
- Claude Opus 4.1 takes 200K tokens, GPT-4o (2024-11-20) 128K.
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 | GPT-4o (2024-11-20) | Ties |
|---|---|---|---|---|
| Coding | 3 | 0 | ||
| Intelligence | 1 | 0 | ||
| Reasoning | 3 | 1 | ||
| Math | 4 | 0 | ||
| Knowledge | 3 | 1 | ||
| General | 1 | 0 | ||
| All shared boards | 15 | 2 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index30
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | Leader |
|---|---|---|---|
| Aider polyglot | Not measured | 18.2% | Only GPT-4o (2024-11-20) measured |
| LMArena WebDev | 1390 | Not measured | Only Claude Opus 4.1 measured |
| LiveCodeBench (Vals AI) | 66.5% | 43.4% | Claude Opus 4.1 |
| Terminal-Bench | 38.0% | Not measured | Only Claude Opus 4.1 measured |
| GSO-Bench | Not measured | 0.0% | Only GPT-4o (2024-11-20) measured |
| WeirdML | 45.9% | 25.1% | Claude Opus 4.1 |
| Cybench | 42.0% | 12.5% | Claude Opus 4.1 |
| LMArena Text: coding | 1479 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: software and IT | 1456 | Not measured | Only Claude Opus 4.1 measured |
| LMArena WebDev: HTML | 1399 | Not measured | Only Claude Opus 4.1 measured |
| SciCode | 4.6% | Not measured | Only Claude Opus 4.1 measured |
| Neither model has a result on the other 32 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | Leader |
|---|---|---|---|
| AA Intelligence Index | 22.8 | 8.4 | 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 index4 boards, none shared
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | Leader |
|---|---|---|---|
| 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 |
| TheAgentCompany | Not measured | 8.6% | Only GPT-4o (2024-11-20) measured |
| Neither model has a result on the other 38 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index31
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | Leader |
|---|---|---|---|
| GPQA Diamond | 76.3% | 53.8% | Claude Opus 4.1 |
| MMMU Pro (Vals AI) | 77.5% | 62.2% | Claude Opus 4.1 |
| GPQA Diamond (Epoch AI run) | 77.3% | 47.9% | Claude Opus 4.1 |
| 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% | 40.0% | GPT-4o (2024-11-20) |
| LMArena Text: hard prompts | 1442 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: expert | 1438 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: hard prompts in English | 1451 | Not measured | Only Claude Opus 4.1 measured |
| Neither model has a result on the other 13 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | Leader |
|---|---|---|---|
| AIME | 78.2% | 11.9% | Claude Opus 4.1 |
| MATH 500 (Vals AI) | 95.4% | 74.0% | Claude Opus 4.1 |
| MGSM (Vals AI) | 94.4% | 90.4% | Claude Opus 4.1 |
| OTIS Mock AIME | 68.9% | 6.3% | Claude Opus 4.1 |
| 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 |
| MATH level 5 | Not measured | 49.8% | Only GPT-4o (2024-11-20) measured |
| LMArena Text: math | 1431 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: mathematical work | 1434 | Not measured | Only Claude Opus 4.1 measured |
| Neither model has a result on the other 5 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index31
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | Leader |
|---|---|---|---|
| MMLU Pro | 87.9% | 72.6% | Claude Opus 4.1 |
| LegalBench (Vals AI) | 83.5% | 82.2% | Claude Opus 4.1 |
| CaseLaw (Vals AI) | Not measured | 59.7% | Only GPT-4o (2024-11-20) measured |
| CorpFin (Vals AI) | Not measured | 45.9% | Only GPT-4o (2024-11-20) measured |
| TaxEval (Vals AI) | 73.7% | 74.5% | GPT-4o (2024-11-20) |
| MortgageTax (Vals AI) | 61.1% | 57.4% | Claude Opus 4.1 |
| MedQA (Vals AI) | 93.6% | Not measured | Only Claude Opus 4.1 measured |
| MedCode (Vals AI) | 47.2% | Not measured | Only Claude Opus 4.1 measured |
| GeoBench | Not measured | 71.0% | Only GPT-4o (2024-11-20) measured |
| LMArena Text: science | 1422 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: medicine and healthcare | 1416 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: legal and government | 1421 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: business and finance | 1406 | Not measured | Only Claude Opus 4.1 measured |
| FACTS Benchmark Suite | 40.4% | Not measured | Only Claude Opus 4.1 measured |
| 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 4 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | Leader |
|---|---|---|---|
| Design Arena: websites | 1176 | Not measured | Only Claude Opus 4.1 measured |
| Design Arena: UI components | 1162 | Not measured | Only Claude Opus 4.1 measured |
| Design Arena: game dev | 1171 | Not measured | Only Claude Opus 4.1 measured |
| Design Arena: data viz | 1166 | Not measured | Only Claude Opus 4.1 measured |
| Design Arena: 3D | 1152 | Not measured | Only Claude Opus 4.1 measured |
| Design Arena: all code categories | 1170 | Not measured | Only Claude Opus 4.1 measured |
| Design Arena: SVG | 1151 | Not measured | Only Claude Opus 4.1 measured |
| Design Arena: ASCII art | 1167 | Not measured | Only Claude Opus 4.1 measured |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | Leader |
|---|---|---|---|
| SAGE (Vals AI) | 31.4% | Not measured | Only Claude Opus 4.1 measured |
| MedScribe (Vals AI) | 73.9% | Not measured | Only Claude Opus 4.1 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% | 81.8% | Claude Opus 4.1 |
| LMArena Text | 1419 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: instruction following | 1435 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: creative writing | 1412 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: English | 1433 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: non-English | 1405 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: Chinese | 1427 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: German | 1413 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: Japanese | 1377 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: Korean | 1381 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: French | 1433 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: Spanish | 1448 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: Russian | 1422 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: Polish | 1413 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: multi-turn | 1444 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: longer queries | 1455 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: writing and language | 1418 | Not measured | Only Claude Opus 4.1 measured |
| LMArena Text: entertainment and media | 1398 | Not measured | Only Claude Opus 4.1 measured |
| MultiChallenge | 57.2% | Not measured | Only Claude Opus 4.1 measured |
| Neither model has a result on the other 25 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Opus 4.1 | GPT-4o (2024-11-20) | 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-4o (2024-11-20) costs less
Repository review
50K input + 3K output tokens
GPT-4o (2024-11-20) costs less
Agent loop
200K input + 10K output tokens
GPT-4o (2024-11-20) 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 | OpenAI GPT-4o (2024-11-20) |
|---|---|---|
| Maker | Anthropic | OpenAI |
| Weights | No public weights listed | No public weights listed |
| Released | August 5, 2025 | November 20, 2024 |
| Context window | 200K | 128K |
| Input $/Mtok | $15.00 | $2.50 |
| Output $/Mtok | $75.00 | $10.00 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 1 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Opus 4.1 better than GPT-4o (2024-11-20) for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Claude Opus 4.1 for a larger context window (200K against 128K tokens) and work measured by VPCT or TaxEval (Vals AI), where it leads.
Which is cheaper, Claude Opus 4.1 or GPT-4o (2024-11-20)?
Claude Opus 4.1 costs $15.00 per million input tokens and $75.00 per million output tokens; GPT-4o (2024-11-20) costs $2.50 and $10.00. Cost per solved task is known for neither of them.
Which has the bigger context window, Claude Opus 4.1 or GPT-4o (2024-11-20)?
Claude Opus 4.1, with 200K tokens against 128K.
How many benchmarks is the Claude Opus 4.1 vs GPT-4o (2024-11-20) comparison based on?
17 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 GPT-4o (2024-11-20)'s on 0. Where only one model has a result, the page says so instead of naming a winner.