Claude Opus 5.5 vs Llama 4 Maverick
Updated October 21, 2026. 50 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
vs boards won of 50 shared
Decision reading
Pick Claude Opus 5.5 for coding: it scores 92.2 on the Vibe Coding Index against 18.1 for Llama 4 Maverick.
Pick Llama 4 Maverick when output tokens cost 30.7x less.
Model AClaude Opus 5.5Anthropic92.2/1002 independent benchmarksNo cost per solved taskModel BLlama 4 MaverickMeta Llama18.1/1002 independent benchmarks$1.491 per solved task
- Shared results
- 50
- Claude Opus 5.5 only
- 57
- Llama 4 Maverick only
- 34
- Like-for-like categories
- 7 of 9
Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.
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, four public coding benchmarks
Claude Opus 5.5
Claude Opus 5.5 scores 92.2 against 18.1.
2 benchmarks behind each score
Intelligence
AA Intelligence Index
Claude Opus 5.5
Claude Opus 5.5 leads, 57.6 against 9.3.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Llama 4 Maverick has a AA Agentic Index result, 0.6.
Directional only
Reasoning
GPQA Diamond
No call
Only Llama 4 Maverick has a GPQA Diamond result, 69.4%.
Directional only
Math
AIME
No call
Only Llama 4 Maverick has a AIME result, 25.2%.
Directional only
Knowledge
MMLU Pro
No call
Only Llama 4 Maverick has a MMLU Pro result, 79.4%.
Directional only
Web design
Design Arena: websites
Claude Opus 5.5
Claude Opus 5.5 leads, 1335 against 871.
Same board, both measured
General
Vals Index
No call
Only Claude Opus 5.5 has a Vals Index result, 70.2%.
Directional only
Long documents
Listed context window
Claude Opus 5.5
Claude Opus 5.5 takes 1M tokens against 524K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Llama 4 Maverick
Claude Opus 5.5 $0.014, Llama 4 Maverick $0.0005 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Llama 4 Maverick has the number, $1.491.
Directional only
At a glance
- Coding index
- Claude Opus 5.5 92.2 from 2 benchmarks, Llama 4 Maverick 18.1 from 2 benchmarks.
- Widest category
- Web design, 66.1 points apart on average over 6 shared benchmarks.
- Widest single gap
- ARC-AGI: Claude Opus 5.5 98.5% against Llama 4 Maverick 4.4%, 94.1 points apart on a 0 to 100 scale.
- Output price
- Claude Opus 5.5 $20.00 against Llama 4 Maverick $0.6525 per million output tokens, 30.7x apart.
- Context window
- Claude Opus 5.5 takes 1M tokens, Llama 4 Maverick 524K.
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 5.5 | Bars | Llama 4 Maverick | Ties |
|---|---|---|---|---|
| Coding | 4 | 0 | ||
| Intelligence | 2 | 0 | ||
| Reasoning | 8 | 0 | ||
| Math | 2 | 0 | ||
| Knowledge | 5 | 0 | ||
| Web design | 6 | 0 | ||
| General | 23 | 0 | ||
| All shared boards | 50 | 0 |
CodingLike-for-likeFour of these boards feed the Vibe Coding Index40
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | Leader |
|---|---|---|---|
| Aider polyglot | Not measured | 15.6% | Only Llama 4 Maverick measured |
| SWE-bench Verified | Not measured | 21.0% | Only Llama 4 Maverick measured |
| LiveBench coding | 96.3% | Not measured | Only Claude Opus 5.5 measured |
| LMArena WebDev | 1807 | Not measured | Only Claude Opus 5.5 measured |
| AA Coding Index | Not measured | 16.3 | Only Llama 4 Maverick measured |
| LiveCodeBench (Vals AI) | Not measured | 47.3% | Only Llama 4 Maverick measured |
| Terminal-Bench 4 (Vals AI) | 65.2% | Not measured | Only Claude Opus 5.5 measured |
| Vibe Code Bench (Vals AI) | 90.3% | Not measured | Only Claude Opus 5.5 measured |
| Code migration (Vals AI) | 66.7% | Not measured | Only Claude Opus 5.5 measured |
| ProgramBench (Vals AI) | 18.5% | Not measured | Only Claude Opus 5.5 measured |
| IOI (Vals AI) | 95.1% | Not measured | Only Claude Opus 5.5 measured |
| Terminal-Bench 2.1 (Vals AI) | 87.6% | Not measured | Only Claude Opus 5.5 measured |
| SWE-bench Multimodal (Vals AI) | 70.2% | Not measured | Only Claude Opus 5.5 measured |
| Vibe Code Bench 1-100 (Vals AI) | 30.4% | Not measured | Only Claude Opus 5.5 measured |
| CyberBench (Vals AI) | 74.6% | Not measured | Only Claude Opus 5.5 measured |
| LiveCodeBench (Artificial Analysis run) | Not measured | 39.7% | Only Llama 4 Maverick measured |
| SciCode | 66.9% | 31.7% | Claude Opus 5.5 |
| Terminal-Bench Hard (Artificial Analysis run) | Not measured | 6.8% | Only Llama 4 Maverick measured |
| FrontierCode | 54.6% | Not measured | Only Claude Opus 5.5 measured |
| FrontierSWE | 62.3% | Not measured | Only Claude Opus 5.5 measured |
| WeirdML | Not measured | 24.5% | Only Llama 4 Maverick measured |
| MirrorCode | 77.4% | Not measured | Only Claude Opus 5.5 measured |
| ALE-Bench | 2147.4 | 173.0 | Claude Opus 5.5 |
| LMArena Text: coding | 1545 | 1301 | Claude Opus 5.5 |
| LMArena Text: software and IT | 1538 | 1299 | Claude Opus 5.5 |
| LMArena WebDev: React | 1855 | Not measured | Only Claude Opus 5.5 measured |
| LMArena WebDev: HTML | 1753 | Not measured | Only Claude Opus 5.5 measured |
| LMArena WebDev: from an image | 1753 | Not measured | Only Claude Opus 5.5 measured |
| Neither model has a result on the other 10 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | Leader |
|---|---|---|---|
| AA Intelligence Index | 57.6 | 9.3 | Claude Opus 5.5 |
| Epoch Capabilities Index | 168.8 | 132.2 | Claude Opus 5.5 |
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index25 boards, none shared
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | Leader |
|---|---|---|---|
| AA Agentic Index | Not measured | 0.6 | Only Llama 4 Maverick measured |
| Design Arena: agents building web apps | 1316 | Not measured | Only Claude Opus 5.5 measured |
| Design Arena: agents building mobile apps | 1311 | Not measured | Only Claude Opus 5.5 measured |
| Design Arena: spreadsheets | 1359 | Not measured | Only Claude Opus 5.5 measured |
| LiveBench research | 85.0% | Not measured | Only Claude Opus 5.5 measured |
| LiveBench browser | 80.0% | Not measured | Only Claude Opus 5.5 measured |
| LiveBench long agentic | 85.0% | Not measured | Only Claude Opus 5.5 measured |
| SREBench (Vals AI) | 33.6% | Not measured | Only Claude Opus 5.5 measured |
| Finance Agent (Vals AI) | 58.6% | Not measured | Only Claude Opus 5.5 measured |
| Tax Agent Bench (Vals AI) | 45.6% | Not measured | Only Claude Opus 5.5 measured |
| Legal Research Bench (Vals AI) | 50.5% | Not measured | Only Claude Opus 5.5 measured |
| Harvey's Legal Agent Benchmark (Vals AI) | 9.2% | Not measured | Only Claude Opus 5.5 measured |
| Excel Modeling Benchmark (Vals AI) | 75.9% | Not measured | Only Claude Opus 5.5 measured |
| BioMysteryBench (Vals AI) | 79.3% | Not measured | Only Claude Opus 5.5 measured |
| Terminal-Bench-Science (Vals AI) | 47.1% | Not measured | Only Claude Opus 5.5 measured |
| Vals Science Index | 58.7% | Not measured | Only Claude Opus 5.5 measured |
| Time Horizon Index (Vals AI) | 91.3% | Not measured | Only Claude Opus 5.5 measured |
| CUA-bench (Vals AI) | 14.0% | Not measured | Only Claude Opus 5.5 measured |
| Robo-bench (Vals AI) | 14.6% | Not measured | Only Claude Opus 5.5 measured |
| τ²-Bench Telecom | Not measured | 17.8% | Only Llama 4 Maverick measured |
| APEX-Agents | 73.5% | Not measured | Only Claude Opus 5.5 measured |
| Remote Labor Index | 21.3% | Not measured | Only Claude Opus 5.5 measured |
| SpireClimb | 3.3% | Not measured | Only Claude Opus 5.5 measured |
| Vending-Bench 2 | $9,235 | Not measured | Only Claude Opus 5.5 measured |
| LMArena Search | 1213 | Not measured | Only Claude Opus 5.5 measured |
| Neither model has a result on the other 14 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index80
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | Leader |
|---|---|---|---|
| GPQA Diamond | Not measured | 69.4% | Only Llama 4 Maverick measured |
| LiveBench reasoning | 92.2% | Not measured | Only Claude Opus 5.5 measured |
| MysteryMechanism (Vals AI) | 49.5% | Not measured | Only Claude Opus 5.5 measured |
| MMMU Pro (Vals AI) | Not measured | 71.7% | Only Llama 4 Maverick measured |
| GPQA Diamond (Artificial Analysis run) | Not measured | 67.1% | Only Llama 4 Maverick measured |
| Humanity's Last Exam (Artificial Analysis run) | 61.4% | 4.9% | Claude Opus 5.5 |
| GPQA Diamond (Epoch AI run) | 90.6% | Not measured | Only Claude Opus 5.5 measured |
| ARC-AGI | 98.5% | 4.4% | Claude Opus 5.5 |
| ARC-AGI-2 | 93.3% | 0.0% | Claude Opus 5.5 |
| SimpleBench | Not measured | 27.7% | Only Llama 4 Maverick measured |
| Chess puzzles | 67.0% | Not measured | Only Claude Opus 5.5 measured |
| Mystery game puzzles | 71.0% | Not measured | Only Claude Opus 5.5 measured |
| EBR-bench | 71.4% | Not measured | Only Claude Opus 5.5 measured |
| LMArena Text: hard prompts | 1536 | 1281 | Claude Opus 5.5 |
| LMArena Text: expert | 1549 | 1259 | Claude Opus 5.5 |
| LMArena Text: hard prompts in English | 1535 | 1295 | Claude Opus 5.5 |
| LMArena Vision: diagrams | 1345 | 1134 | Claude Opus 5.5 |
| LMArena Vision: homework | 1362 | 1164 | Claude Opus 5.5 |
| Neither model has a result on the other 3 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | Leader |
|---|---|---|---|
| AIME | Not measured | 25.2% | Only Llama 4 Maverick measured |
| MATH 500 (Vals AI) | Not measured | 85.2% | Only Llama 4 Maverick measured |
| MGSM (Vals AI) | Not measured | 92.4% | Only Llama 4 Maverick measured |
| AA Math Index | Not measured | 19.3 | Only Llama 4 Maverick measured |
| AIME 2025 (Artificial Analysis run) | Not measured | 19.3% | Only Llama 4 Maverick measured |
| OTIS Mock AIME | 100.0% | Not measured | Only Claude Opus 5.5 measured |
| FrontierMath, tiers 1 to 3 | 91.2% | Not measured | Only Claude Opus 5.5 measured |
| FrontierMath, tier 4 | 95.0% | Not measured | Only Claude Opus 5.5 measured |
| ProofBench | 100.0% | Not measured | Only Claude Opus 5.5 measured |
| LMArena Text: math | 1518 | 1299 | Claude Opus 5.5 |
| LMArena Text: mathematical work | 1516 | 1295 | Claude Opus 5.5 |
| Neither model has a result on the other 2 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | Leader |
|---|---|---|---|
| MMLU Pro | Not measured | 79.4% | Only Llama 4 Maverick measured |
| LegalBench (Vals AI) | Not measured | 77.8% | Only Llama 4 Maverick measured |
| CorpFin (Vals AI) | Not measured | 49.7% | Only Llama 4 Maverick measured |
| TaxEval (Vals AI) | Not measured | 66.6% | Only Llama 4 Maverick measured |
| MortgageTax (Vals AI) | Not measured | 58.5% | Only Llama 4 Maverick measured |
| MedQA (Vals AI) | Not measured | 43.3% | Only Llama 4 Maverick measured |
| MedCode (Vals AI) | 49.8% | 36.5% | Claude Opus 5.5 |
| MMLU Pro (Artificial Analysis run) | Not measured | 80.9% | Only Llama 4 Maverick measured |
| SimpleQA Verified | 72.2% | Not measured | Only Claude Opus 5.5 measured |
| GeoBench | Not measured | 52.0% | Only Llama 4 Maverick measured |
| LMArena Text: science | 1524 | 1288 | Claude Opus 5.5 |
| LMArena Text: medicine and healthcare | 1509 | 1275 | Claude Opus 5.5 |
| LMArena Text: legal and government | 1518 | 1286 | Claude Opus 5.5 |
| LMArena Text: business and finance | 1494 | 1260 | Claude Opus 5.5 |
| Neither model has a result on the other 3 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index60
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | Leader |
|---|---|---|---|
| Design Arena: websites | 1335 | 871 | Claude Opus 5.5 |
| Design Arena: UI components | 1390 | 899 | Claude Opus 5.5 |
| Design Arena: game dev | 1457 | 838 | Claude Opus 5.5 |
| Design Arena: data viz | 1397 | 882 | Claude Opus 5.5 |
| Design Arena: 3D | 1477 | 901 | Claude Opus 5.5 |
| Design Arena: all code categories | 1390 | 880 | Claude Opus 5.5 |
| Design Arena: SVG | 1332 | Not measured | Only Claude Opus 5.5 measured |
| LiveBench design | 86.9% | Not measured | Only Claude Opus 5.5 measured |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index230
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | Leader |
|---|---|---|---|
| Vals Index | 70.2% | Not measured | Only Claude Opus 5.5 measured |
| LiveBench data analysis | 80.3% | Not measured | Only Claude Opus 5.5 measured |
| Public Benefits Bench (Vals AI) | 70.6% | Not measured | Only Claude Opus 5.5 measured |
| SAGE (Vals AI) | 45.8% | 35.7% | Claude Opus 5.5 |
| MedScribe (Vals AI) | 91.4% | 54.2% | Claude Opus 5.5 |
| IFBench | Not measured | 43.0% | Only Llama 4 Maverick measured |
| Long context reasoning (AA-LCR) | 84.7% | 50.0% | Claude Opus 5.5 |
| DTBench | 98.9% | 61.9% | Claude Opus 5.5 |
| LMCA | 68.2% | 15.9% | Claude Opus 5.5 |
| Fiction.LiveBench | Not measured | 46.2% | Only Llama 4 Maverick measured |
| Creative writing (Lech Mazur) | Not measured | 62.0% | Only Llama 4 Maverick measured |
| Furniture assembly | 83.3% | Not measured | Only Claude Opus 5.5 measured |
| LMArena Text | 1516 | 1287 | Claude Opus 5.5 |
| LMArena Text: instruction following | 1537 | 1267 | Claude Opus 5.5 |
| LMArena Text: creative writing | 1535 | 1266 | Claude Opus 5.5 |
| LMArena Vision | 1321 | 1142 | Claude Opus 5.5 |
| LMArena Text: English | 1519 | 1303 | Claude Opus 5.5 |
| LMArena Text: non-English | 1507 | 1269 | Claude Opus 5.5 |
| LMArena Text: Chinese | 1582 | 1277 | Claude Opus 5.5 |
| LMArena Text: German | Not measured | 1291 | Only Llama 4 Maverick measured |
| LMArena Text: Japanese | 1534 | 1206 | Claude Opus 5.5 |
| LMArena Text: Korean | Not measured | 1203 | Only Llama 4 Maverick measured |
| LMArena Text: French | 1493 | 1259 | Claude Opus 5.5 |
| LMArena Text: Spanish | 1508 | 1293 | Claude Opus 5.5 |
| LMArena Text: Russian | 1517 | 1286 | Claude Opus 5.5 |
| LMArena Text: Polish | Not measured | 1275 | Only Llama 4 Maverick measured |
| LMArena Text: multi-turn | 1501 | 1289 | Claude Opus 5.5 |
| LMArena Text: longer queries | 1532 | 1280 | Claude Opus 5.5 |
| LMArena Text: writing and language | 1532 | 1277 | Claude Opus 5.5 |
| LMArena Text: entertainment and media | 1515 | 1250 | Claude Opus 5.5 |
| LMArena Vision: English | 1317 | 1150 | Claude Opus 5.5 |
| LMArena Vision: Chinese | Not measured | 1141 | Only Llama 4 Maverick measured |
| LMArena Vision: reading text | 1326 | 1143 | Claude Opus 5.5 |
| LMArena Vision: humor | Not measured | 1100 | Only Llama 4 Maverick measured |
| LMArena Vision: creative writing | 1320 | 1099 | Claude Opus 5.5 |
| Neither model has a result on the other 11 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Opus 5.5 | Llama 4 Maverick | 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
Claude Opus 5.5$0.014Fits in one request
Llama 4 Maverick$0.0005Fits in one request
Llama 4 Maverick costs less
Repository review
50K input + 3K output tokens
Claude Opus 5.5$0.260Fits in one request
Llama 4 Maverick$0.011Fits in one request
Llama 4 Maverick costs less
Agent loop
200K input + 10K output tokens
Claude Opus 5.5$1.00Fits in one request
Llama 4 Maverick$0.044Fits in one request
Llama 4 Maverick 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 5.5 | Meta Llama 4 Maverick |
|---|---|---|
| Maker | Anthropic | Meta Llama |
| Weights | No public weights listed | Open weights |
| Released | September 22, 2026 | April 5, 2025 |
| Context window | 1M | 524K |
| Input $/Mtok | $4.00 | $0.1875 |
| Output $/Mtok | $20.00 | $0.6525 |
| Coding index | 92.2 | 18.1 |
| Independent measurements behind it | 2 | 2 |
| Cost per solved task | Not computable | $1.491 |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Opus 5.5 better than Llama 4 Maverick for coding?
Pick Claude Opus 5.5 for coding: it scores 92.2 on the Vibe Coding Index against 18.1 for Llama 4 Maverick. Pick Llama 4 Maverick when output tokens cost 30.7x less.
Which is cheaper, Claude Opus 5.5 or Llama 4 Maverick?
Claude Opus 5.5 costs $4.00 per million input tokens and $20.00 per million output tokens; Llama 4 Maverick costs $0.1875 and $0.6525. Cost per solved task is known for Llama 4 Maverick only.
Which has the bigger context window, Claude Opus 5.5 or Llama 4 Maverick?
Claude Opus 5.5, with 1M tokens against 524K.
How many benchmarks is the Claude Opus 5.5 vs Llama 4 Maverick comparison based on?
50 benchmarks have a result for both models as of October 21, 2026. Claude Opus 5.5's coding index rests on 2 independent benchmarks and Llama 4 Maverick's on 2. Where only one model has a result, the page says so instead of naming a winner.