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Claude Opus 5 vs Qwen3.5-35B-A3B

Updated October 21, 2026. 42 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Claude Opus 5 Replace Qwen3.5-35B-A3B
Claude Opus 5Anthropic
Coding
81.8
Overall
50.8
Output $/M
$25.00
42
Qwen3.5-35B-A3BQwen
Coding
7.7
Overall
19.3
Output $/M
$1.00
0
vs boards won of 42 shared

Decision reading

Pick Claude Opus 5 for coding: it scores 81.8 on the Vibe Coding Index against 7.7 for Qwen3.5-35B-A3B.

Pick Qwen3.5-35B-A3B when output tokens cost 25.0x less.

Model AClaude Opus 5Anthropic81.8/1002 independent benchmarks$1.33 per solved taskModel BQwen3.5-35B-A3BQwen7.7/1001 independent benchmarkNo cost per solved task
Shared results
42
Claude Opus 5 only
88
Qwen3.5-35B-A3B only
3
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.

At a glance

Coding index
Claude Opus 5 81.8 from 2 benchmarks, Qwen3.5-35B-A3B 7.7 from 1 benchmark.
Widest category
Agentic work, 67.0 points apart on average over 1 shared benchmark.
Widest single gap
Vending-Bench 2: Claude Opus 5 $11,182 against Qwen3.5-35B-A3B $463, 67.0 points apart on a 0 to 100 scale.
Output price
Claude Opus 5 $25.00 against Qwen3.5-35B-A3B $1.00 per million output tokens, 25.0x apart.
Context window
Claude Opus 5 takes 1M tokens, Qwen3.5-35B-A3B 262K.

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.

Boards won, where both have a result
CategoryClaude Opus 5BarsQwen3.5-35B-A3BTies
Coding60
Intelligence20
Agentic work10
Reasoning60
Math30
Knowledge40
General200
All shared boards420
CodingLike-for-likeFour of these boards feed the Vibe Coding Index60
Coding benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
LiveBench coding90.8%Not measuredOnly Claude Opus 5 measured
LMArena WebDev16891254Claude Opus 5
AA Coding Index78.0Not measuredOnly Claude Opus 5 measured
LiveCodeBench (Vals AI)89.0%Not measuredOnly Claude Opus 5 measured
SWE-bench Verified (Vals AI)97.0%Not measuredOnly Claude Opus 5 measured
Terminal-Bench 4 (Vals AI)53.5%Not measuredOnly Claude Opus 5 measured
Vibe Code Bench (Vals AI)88.4%Not measuredOnly Claude Opus 5 measured
Code migration (Vals AI)57.5%Not measuredOnly Claude Opus 5 measured
ProgramBench (Vals AI)3.0%Not measuredOnly Claude Opus 5 measured
IOI (Vals AI)84.3%Not measuredOnly Claude Opus 5 measured
Terminal-Bench 2.1 (Vals AI)84.6%Not measuredOnly Claude Opus 5 measured
Vibe Code Bench 1-100 (Vals AI)28.5%Not measuredOnly Claude Opus 5 measured
SkillsBench (Vals AI)60.4%Not measuredOnly Claude Opus 5 measured
CyberBench (Vals AI)65.4%Not measuredOnly Claude Opus 5 measured
SciCode56.4%Not measuredOnly Claude Opus 5 measured
Terminal-Bench Hard (Artificial Analysis run)Not measured26.5%Only Qwen3.5-35B-A3B measured
FrontierCode53.4%Not measuredOnly Claude Opus 5 measured
FrontierSWE52.0%Not measuredOnly Claude Opus 5 measured
WeirdML91.8%Not measuredOnly Claude Opus 5 measured
ALE-Bench2164.6221.8Claude Opus 5
LMArena Text: coding15331410Claude Opus 5
LMArena Text: software and IT15271415Claude Opus 5
LMArena WebDev: React17111238Claude Opus 5
LMArena WebDev: HTML16801301Claude Opus 5
LMArena WebDev: from an image1662Not measuredOnly Claude Opus 5 measured
Neither model has a result on the other 13 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
AA Intelligence Index50.819.3Claude Opus 5
Epoch Capabilities Index163.9142.5Claude Opus 5
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
AA Agentic Index56.5Not measuredOnly Claude Opus 5 measured
Design Arena: agents building web apps1266Not measuredOnly Claude Opus 5 measured
Design Arena: agents building full-stack apps1306Not measuredOnly Claude Opus 5 measured
Design Arena: agents building mobile apps1348Not measuredOnly Claude Opus 5 measured
Design Arena: agents building Android apps1258Not measuredOnly Claude Opus 5 measured
Design Arena: agents building Godot games1279Not measuredOnly Claude Opus 5 measured
Design Arena: agents building games1261Not measuredOnly Claude Opus 5 measured
Design Arena: PowerPoint slides1265Not measuredOnly Claude Opus 5 measured
LiveBench research88.9%Not measuredOnly Claude Opus 5 measured
LiveBench browser84.0%Not measuredOnly Claude Opus 5 measured
LiveBench long agentic62.1%Not measuredOnly Claude Opus 5 measured
SREBench (Vals AI)12.2%Not measuredOnly Claude Opus 5 measured
Finance Agent (Vals AI)58.6%Not measuredOnly Claude Opus 5 measured
Tax Agent Bench (Vals AI)45.5%Not measuredOnly Claude Opus 5 measured
Legal Research Bench (Vals AI)55.3%Not measuredOnly Claude Opus 5 measured
Excel Modeling Benchmark (Vals AI)73.6%Not measuredOnly Claude Opus 5 measured
BioMysteryBench (Vals AI)79.3%Not measuredOnly Claude Opus 5 measured
Terminal-Bench-Science (Vals AI)27.1%Not measuredOnly Claude Opus 5 measured
Vals Science Index47.9%Not measuredOnly Claude Opus 5 measured
Time Horizon Index (Vals AI)18.8%Not measuredOnly Claude Opus 5 measured
CUA-bench (Vals AI)9.0%Not measuredOnly Claude Opus 5 measured
τ²-Bench TelecomNot measured89.2%Only Qwen3.5-35B-A3B measured
APEX-Agents65.8%Not measuredOnly Claude Opus 5 measured
OSWorld 2.031.4%Not measuredOnly Claude Opus 5 measured
BALROG63.4%Not measuredOnly Claude Opus 5 measured
PostTrainBench35.0%Not measuredOnly Claude Opus 5 measured
Vending-Bench 2$11,182$463Claude Opus 5
LMArena Search1242Not measuredOnly Claude Opus 5 measured
Neither model has a result on the other 11 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index60
Reasoning benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
GPQA Diamond93.4%Not measuredOnly Claude Opus 5 measured
LiveBench reasoning91.2%Not measuredOnly Claude Opus 5 measured
MysteryMechanism (Vals AI)37.4%Not measuredOnly Claude Opus 5 measured
MMMU Pro (Vals AI)89.9%Not measuredOnly Claude Opus 5 measured
GPQA Diamond (Artificial Analysis run)93.7%84.5%Claude Opus 5
Humanity's Last Exam (Artificial Analysis run)54.9%21.0%Claude Opus 5
GPQA Diamond (Epoch AI run)93.9%83.5%Claude Opus 5
ARC-AGI97.5%Not measuredOnly Claude Opus 5 measured
ARC-AGI-290.4%Not measuredOnly Claude Opus 5 measured
SimpleBench80.6%Not measuredOnly Claude Opus 5 measured
Chess puzzles43.0%Not measuredOnly Claude Opus 5 measured
Mystery game puzzles59.0%Not measuredOnly Claude Opus 5 measured
EBR-bench45.7%Not measuredOnly Claude Opus 5 measured
LMArena Text: hard prompts15271400Claude Opus 5
LMArena Text: expert15541408Claude Opus 5
LMArena Text: hard prompts in English15231411Claude Opus 5
LMArena Vision: diagrams1348Not measuredOnly Claude Opus 5 measured
LMArena Vision: homework1338Not measuredOnly Claude Opus 5 measured
Neither model has a result on the other 3 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
OTIS Mock AIME98.9%70.0%Claude Opus 5
FrontierMath, tiers 1 to 385.6%Not measuredOnly Claude Opus 5 measured
FrontierMath, tier 473.2%Not measuredOnly Claude Opus 5 measured
ProofBench99.0%Not measuredOnly Claude Opus 5 measured
LMArena Text: math15331404Claude Opus 5
LMArena Text: mathematical work15441410Claude Opus 5
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index40
Knowledge benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
MMLU Pro91.6%Not measuredOnly Claude Opus 5 measured
LegalBench (Vals AI)87.0%Not measuredOnly Claude Opus 5 measured
CorpFin (Vals AI)73.2%Not measuredOnly Claude Opus 5 measured
TaxEval (Vals AI)75.1%Not measuredOnly Claude Opus 5 measured
MortgageTax (Vals AI)72.1%Not measuredOnly Claude Opus 5 measured
MedCode (Vals AI)63.6%Not measuredOnly Claude Opus 5 measured
SimpleQA Verified59.9%Not measuredOnly Claude Opus 5 measured
LMArena Text: science15311413Claude Opus 5
LMArena Text: medicine and healthcare15251421Claude Opus 5
LMArena Text: legal and government15301399Claude Opus 5
LMArena Text: business and finance15011394Claude Opus 5
Neither model has a result on the other 6 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared
Web design benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
Design Arena: websites1309Not measuredOnly Claude Opus 5 measured
Design Arena: UI components1348Not measuredOnly Claude Opus 5 measured
Design Arena: game dev1339Not measuredOnly Claude Opus 5 measured
Design Arena: data viz1329Not measuredOnly Claude Opus 5 measured
Design Arena: 3D1335Not measuredOnly Claude Opus 5 measured
Design Arena: all code categories1324Not measuredOnly Claude Opus 5 measured
Design Arena: SVG1310Not measuredOnly Claude Opus 5 measured
Design Arena: ASCII art1352Not measuredOnly Claude Opus 5 measured
LiveBench design83.0%Not measuredOnly Claude Opus 5 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index200
General benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
LiveBench data analysis74.6%Not measuredOnly Claude Opus 5 measured
Public Benefits Bench (Vals AI)76.9%Not measuredOnly Claude Opus 5 measured
SAGE (Vals AI)49.4%Not measuredOnly Claude Opus 5 measured
MedScribe (Vals AI)91.0%Not measuredOnly Claude Opus 5 measured
Vals Multimodal Index73.9%Not measuredOnly Claude Opus 5 measured
IFBenchNot measured72.5%Only Qwen3.5-35B-A3B measured
Long context reasoning (AA-LCR)82.0%72.0%Claude Opus 5
DTBench97.9%80.0%Claude Opus 5
LMCA64.5%29.5%Claude Opus 5
Furniture assembly60.8%Not measuredOnly Claude Opus 5 measured
LMArena Text15091395Claude Opus 5
LMArena Text: instruction following15181379Claude Opus 5
LMArena Text: creative writing14931347Claude Opus 5
LMArena Vision1320Not measuredOnly Claude Opus 5 measured
LMArena Text: English15081407Claude Opus 5
LMArena Text: non-English15021378Claude Opus 5
LMArena Text: Chinese15731457Claude Opus 5
LMArena Text: German15271367Claude Opus 5
LMArena Text: Japanese15201326Claude Opus 5
LMArena Text: Korean15171355Claude Opus 5
LMArena Text: French15191412Claude Opus 5
LMArena Text: Spanish15231390Claude Opus 5
LMArena Text: Russian15071376Claude Opus 5
LMArena Text: Polish15221385Claude Opus 5
LMArena Text: multi-turn15001390Claude Opus 5
LMArena Text: longer queries15171389Claude Opus 5
LMArena Text: writing and language14991365Claude Opus 5
LMArena Text: entertainment and media14811347Claude Opus 5
LMArena Vision: English1315Not measuredOnly Claude Opus 5 measured
LMArena Vision: Chinese1400Not measuredOnly Claude Opus 5 measured
LMArena Vision: reading text1329Not measuredOnly Claude Opus 5 measured
LMArena Vision: humor1293Not measuredOnly Claude Opus 5 measured
LMArena Vision: creative writing1313Not measuredOnly Claude Opus 5 measured
LMArena Document1516Not measuredOnly Claude Opus 5 measured
Neither model has a result on the other 12 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Opus 5 and Qwen3.5-35B-A3B
BenchmarkClaude Opus 5Qwen3.5-35B-A3BLeader
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$0.018Fits in one request
Qwen3.5-35B-A3B$0.0006Fits in one request

Qwen3.5-35B-A3B costs less

Repository review

50K input + 3K output tokens

Claude Opus 5$0.325Fits in one request
Qwen3.5-35B-A3B$0.010Fits in one request

Qwen3.5-35B-A3B costs less

Agent loop

200K input + 10K output tokens

Claude Opus 5$1.25Fits in one request
Qwen3.5-35B-A3B$0.038Fits in one request

Qwen3.5-35B-A3B 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.

Specifications of Claude Opus 5 and Qwen3.5-35B-A3B
SpecificationAnthropic Claude Opus 5Qwen3.5-35B-A3B
MakerAnthropicQwen
WeightsNo public weights listedOpen weights
ReleasedJuly 24, 2026February 25, 2026
Context window1M262K
Input $/Mtok$5.00$0.14
Output $/Mtok$25.00$1.00
Coding index81.87.7
Independent measurements behind it21
Cost per solved task$1.33Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Opus 5 better than Qwen3.5-35B-A3B for coding?

Pick Claude Opus 5 for coding: it scores 81.8 on the Vibe Coding Index against 7.7 for Qwen3.5-35B-A3B. Pick Qwen3.5-35B-A3B when output tokens cost 25.0x less.

Which is cheaper, Claude Opus 5 or Qwen3.5-35B-A3B?

Claude Opus 5 costs $5.00 per million input tokens and $25.00 per million output tokens; Qwen3.5-35B-A3B costs $0.14 and $1.00. Cost per solved task is known for Claude Opus 5 only.

Which has the bigger context window, Claude Opus 5 or Qwen3.5-35B-A3B?

Claude Opus 5, with 1M tokens against 262K.

How many benchmarks is the Claude Opus 5 vs Qwen3.5-35B-A3B comparison based on?

42 benchmarks have a result for both models as of October 21, 2026. Claude Opus 5's coding index rests on 2 independent benchmarks and Qwen3.5-35B-A3B's on 1. Where only one model has a result, the page says so instead of naming a winner.

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