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Claude Sonnet 5.5 vs Qwen3.8 Max (0902)

Claude Sonnet 5.5 leads Qwen3.8 Max (0902) on coding, 87.3 to 62.4 on the Vibe Coding Index, and Qwen3.8 Max (0902) costs 1.7x less per output token ($6.00 vs $10.00 per million). Updated October 22, 2026; 86 benchmarks have a result for both.

Replace Claude Sonnet 5.5 Replace Qwen3.8 Max (0902)
Claude Sonnet 5.5Anthropic
Coding
87.3
Overall
82.8
Output $/M
$10.00
61
Qwen3.8 Max (0902)Qwen
Coding
62.4
Overall
68.9
Output $/M
$6.00
24
vs boards won of 86 shared, 1 tied

Claude Sonnet 5.5 or Qwen3.8 Max (0902): which to pick

Pick Claude Sonnet 5.5 for coding: it scores 87.3 on the Vibe Coding Index against 62.4 for Qwen3.8 Max (0902).

Pick Qwen3.8 Max (0902) for output tokens 1.7x cheaper ($6.00 vs $10.00 per million) and work measured by LMArena Text: hard prompts or LMArena Text: hard prompts in English, where it leads.

Model AClaude Sonnet 5.5Anthropic87.3/1005 independent benchmarksNo cost per solved taskModel BQwen3.8 Max (0902)Qwen62.4/1005 independent benchmarks$1.32 per solved task
Shared results
86
Claude Sonnet 5.5 only
12
Qwen3.8 Max (0902) 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.

At a glance

Coding index
Claude Sonnet 5.5 87.3 from 5 benchmarks, Qwen3.8 Max (0902) 62.4 from 5 benchmarks.
Widest category
Agentic work, 18.5 points apart on average over 12 shared benchmarks.
Widest single gap
Furniture assembly: Claude Sonnet 5.5 75.0% against Qwen3.8 Max (0902) 20.0%, 55.0 points apart on a 0 to 100 scale.
Output price
Claude Sonnet 5.5 $10.00 against Qwen3.8 Max (0902) $6.00 per million output tokens, 1.7x apart.
Context window
Both take 1M tokens.

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 Sonnet 5.5BarsQwen3.8 Max (0902)Ties
Coding170
Intelligence20
Agentic work120
Reasoning83
Math411 tie
Knowledge15
Web design70
General1015
All shared boards61241 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index170
Coding benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)Leader
LiveBench coding94.7%60.3%Claude Sonnet 5.5
LMArena WebDev17681674Claude Sonnet 5.5
AA Coding IndexNot measured76.2Only Qwen3.8 Max (0902) measured
LiveCodeBench (Vals AI)Not measured87.8%Only Qwen3.8 Max (0902) measured
SWE-bench Verified (Vals AI)Not measured85.6%Only Qwen3.8 Max (0902) measured
Terminal-Bench 4 (Vals AI)64.1%34.3%Claude Sonnet 5.5
Vibe Code Bench (Vals AI)92.4%64.7%Claude Sonnet 5.5
Code migration (Vals AI)69.8%24.0%Claude Sonnet 5.5
ProgramBench (Vals AI)6.5%0.0%Claude Sonnet 5.5
IOI (Vals AI)83.1%68.9%Claude Sonnet 5.5
Terminal-Bench 2.1 (Vals AI)83.2%67.4%Claude Sonnet 5.5
SWE-bench Multimodal (Vals AI)58.3%42.5%Claude Sonnet 5.5
Vibe Code Bench 1-100 (Vals AI)Not measured12.8%Only Qwen3.8 Max (0902) measured
SkillsBench (Vals AI)Not measured42.0%Only Qwen3.8 Max (0902) measured
CyberBench (Vals AI)59.6%28.6%Claude Sonnet 5.5
SciCode61.0%53.2%Claude Sonnet 5.5
FrontierCode52.1%Not measuredOnly Claude Sonnet 5.5 measured
FrontierSWE61.9%17.8%Claude Sonnet 5.5
ALE-Bench1819.1Not measuredOnly Claude Sonnet 5.5 measured
LMArena Text: coding15131502Claude Sonnet 5.5
LMArena Text: software and IT15041498Claude Sonnet 5.5
LMArena WebDev: React18171692Claude Sonnet 5.5
LMArena WebDev: HTML17411649Claude Sonnet 5.5
LMArena WebDev: from an image17371637Claude Sonnet 5.5
SciCode13.8%Not measuredOnly Claude Sonnet 5.5 measured
SWE-Bench Pro V295.8%Not measuredOnly Claude Sonnet 5.5 measured
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)Leader
AA Intelligence Index56.045.4Claude Sonnet 5.5
Epoch Capabilities Index166.2157.4Claude Sonnet 5.5
Agentic workLike-for-likePublic boards, shown as published, kept out of the index120
Agentic work benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)Leader
AA Agentic IndexNot measured56.0Only Qwen3.8 Max (0902) measured
Design Arena: agents building web apps13051300Claude Sonnet 5.5
Design Arena: agents building full-stack appsNot measured1305Only Qwen3.8 Max (0902) measured
Design Arena: agents building mobile apps12601224Claude Sonnet 5.5
Design Arena: agents building Android appsNot measured1190Only Qwen3.8 Max (0902) measured
Design Arena: agents building Godot gamesNot measured1234Only Qwen3.8 Max (0902) measured
Design Arena: PowerPoint slidesNot measured1232Only Qwen3.8 Max (0902) measured
Design Arena: spreadsheets1271993Claude Sonnet 5.5
LiveBench research83.6%69.9%Claude Sonnet 5.5
LiveBench browser84.0%32.0%Claude Sonnet 5.5
LiveBench long agentic78.8%42.3%Claude Sonnet 5.5
SREBench (Vals AI)30.1%Not measuredOnly Claude Sonnet 5.5 measured
Finance Agent (Vals AI)58.1%50.6%Claude Sonnet 5.5
Tax Agent Bench (Vals AI)42.0%32.1%Claude Sonnet 5.5
Legal Research Bench (Vals AI)48.1%47.6%Claude Sonnet 5.5
Harvey's Legal Agent Benchmark (Vals AI)10.4%Not measuredOnly Claude Sonnet 5.5 measured
Excel Modeling Benchmark (Vals AI)75.7%60.1%Claude Sonnet 5.5
BioMysteryBench (Vals AI)81.1%Not measuredOnly Claude Sonnet 5.5 measured
Terminal-Bench-Science (Vals AI)47.1%12.9%Claude Sonnet 5.5
Vals Science Index59.1%Not measuredOnly Claude Sonnet 5.5 measured
APEX-Agents75.5%63.3%Claude Sonnet 5.5
SpireClimb1.3%Not measuredOnly Claude Sonnet 5.5 measured
Vending-Bench 2$11,165Not measuredOnly Claude Sonnet 5.5 measured
LMArena SearchNot measured1261Only Qwen3.8 Max (0902) measured
Neither model has a result on the other 18 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index83
Reasoning benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)Leader
GPQA DiamondNot measured93.7%Only Qwen3.8 Max (0902) measured
LiveBench reasoning91.6%88.2%Claude Sonnet 5.5
MysteryMechanism (Vals AI)49.1%23.9%Claude Sonnet 5.5
MMMU Pro (Vals AI)Not measured88.0%Only Qwen3.8 Max (0902) measured
GPQA Diamond (Artificial Analysis run)Not measured92.8%Only Qwen3.8 Max (0902) measured
Humanity's Last Exam (Artificial Analysis run)55.0%43.1%Claude Sonnet 5.5
GPQA Diamond (Epoch AI run)95.6%92.7%Claude Sonnet 5.5
Chess puzzles59.0%46.0%Claude Sonnet 5.5
Mystery game puzzles65.0%38.0%Claude Sonnet 5.5
LMArena Text: hard prompts14941496Qwen3.8 Max (0902)
LMArena Text: expert15311507Claude Sonnet 5.5
LMArena Text: hard prompts in English15021503Qwen3.8 Max (0902)
LMArena Vision: diagrams13291323Claude Sonnet 5.5
LMArena Vision: homework13311336Qwen3.8 Max (0902)
Humanity's Last Exam (Scale run)37.5%Not measuredOnly Claude Sonnet 5.5 measured
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index41
Math benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)Leader
OTIS Mock AIME100.0%100.0%Tie
FrontierMath, tiers 1 to 388.8%74.7%Claude Sonnet 5.5
FrontierMath, tier 480.5%46.3%Claude Sonnet 5.5
ProofBench100.0%58.0%Claude Sonnet 5.5
LMArena Text: math14971501Qwen3.8 Max (0902)
LMArena Text: mathematical work15101491Claude Sonnet 5.5
MathArenaNot measured51.6%Only Qwen3.8 Max (0902) measured
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index15
Knowledge benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)Leader
MMLU ProNot measured88.6%Only Qwen3.8 Max (0902) measured
LegalBench (Vals AI)Not measured83.6%Only Qwen3.8 Max (0902) measured
CorpFin (Vals AI)Not measured65.8%Only Qwen3.8 Max (0902) measured
TaxEval (Vals AI)Not measured75.5%Only Qwen3.8 Max (0902) measured
MortgageTax (Vals AI)Not measured64.0%Only Qwen3.8 Max (0902) measured
MedCode (Vals AI)52.9%40.7%Claude Sonnet 5.5
SimpleQA Verified46.5%47.3%Qwen3.8 Max (0902)
LMArena Text: science14831512Qwen3.8 Max (0902)
LMArena Text: medicine and healthcare14641503Qwen3.8 Max (0902)
LMArena Text: legal and government14831492Qwen3.8 Max (0902)
LMArena Text: business and finance14681480Qwen3.8 Max (0902)
Neither model has a result on the other 9 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index70
Web design benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)Leader
Design Arena: websites13271275Claude Sonnet 5.5
Design Arena: UI components13691336Claude Sonnet 5.5
Design Arena: game dev14721312Claude Sonnet 5.5
Design Arena: data viz13821282Claude Sonnet 5.5
Design Arena: 3D14421336Claude Sonnet 5.5
Design Arena: all code categories13651292Claude Sonnet 5.5
Design Arena: ASCII artNot measured1200Only Qwen3.8 Max (0902) measured
LiveBench design85.0%78.6%Claude Sonnet 5.5
Neither model has a result on the other 1 board here
GeneralLike-for-likePublic boards, shown as published, kept out of the index1015
General benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)Leader
Vals Index70.8%Not measuredOnly Claude Sonnet 5.5 measured
LiveBench data analysis59.5%78.4%Qwen3.8 Max (0902)
Public Benefits Bench (Vals AI)67.2%67.1%Claude Sonnet 5.5
SAGE (Vals AI)51.8%51.2%Claude Sonnet 5.5
MedScribe (Vals AI)91.1%85.0%Claude Sonnet 5.5
Vals Multimodal IndexNot measured65.4%Only Qwen3.8 Max (0902) measured
Long context reasoning (AA-LCR)82.7%80.3%Claude Sonnet 5.5
DTBench97.3%92.0%Claude Sonnet 5.5
LMCA68.3%46.2%Claude Sonnet 5.5
Furniture assembly75.0%20.0%Claude Sonnet 5.5
LMArena Text14731483Qwen3.8 Max (0902)
LMArena Text: instruction following14921481Claude Sonnet 5.5
LMArena Text: creative writing14671477Qwen3.8 Max (0902)
LMArena Vision12871313Qwen3.8 Max (0902)
LMArena Text: English14841491Qwen3.8 Max (0902)
LMArena Text: non-English14561473Qwen3.8 Max (0902)
LMArena Text: Chinese15351539Qwen3.8 Max (0902)
LMArena Text: GermanNot measured1478Only Qwen3.8 Max (0902) measured
LMArena Text: JapaneseNot measured1473Only Qwen3.8 Max (0902) measured
LMArena Text: KoreanNot measured1460Only Qwen3.8 Max (0902) measured
LMArena Text: French14991498Claude Sonnet 5.5
LMArena Text: Spanish14511489Qwen3.8 Max (0902)
LMArena Text: Russian14541482Qwen3.8 Max (0902)
LMArena Text: PolishNot measured1471Only Qwen3.8 Max (0902) measured
LMArena Text: multi-turn14651489Qwen3.8 Max (0902)
LMArena Text: longer queries14951488Claude Sonnet 5.5
LMArena Text: writing and language14741477Qwen3.8 Max (0902)
LMArena Text: entertainment and media14611464Qwen3.8 Max (0902)
LMArena Vision: English12891311Qwen3.8 Max (0902)
LMArena Vision: ChineseNot measured1358Only Qwen3.8 Max (0902) measured
LMArena Vision: reading text12971322Qwen3.8 Max (0902)
LMArena Vision: humorNot measured1304Only Qwen3.8 Max (0902) measured
LMArena Vision: creative writing12421312Qwen3.8 Max (0902)
Neither model has a result on the other 15 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Claude Sonnet 5.5 and Qwen3.8 Max (0902)
BenchmarkClaude Sonnet 5.5Qwen3.8 Max (0902)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 Sonnet 5.5$0.0070Fits in one request
Qwen3.8 Max (0902)$0.0050Fits in one request

Qwen3.8 Max (0902) costs less

Repository review

50K input + 3K output tokens

Claude Sonnet 5.5$0.130Fits in one request
Qwen3.8 Max (0902)$0.118Fits in one request

Qwen3.8 Max (0902) costs less

Agent loop

200K input + 10K output tokens

Claude Sonnet 5.5$0.500Fits in one request
Qwen3.8 Max (0902)$0.460Fits in one request

Qwen3.8 Max (0902) 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 Sonnet 5.5 and Qwen3.8 Max (0902)
SpecificationAnthropic Claude Sonnet 5.5Qwen3.8 Max (0902)
MakerAnthropicQwen
WeightsNo public weights listedNo public weights listed
ReleasedSeptember 28, 2026September 3, 2026
Context window1M1M
Input $/Mtok$2.00$2.00
Output $/Mtok$10.00$6.00
Coding index87.362.4
Independent measurements behind it55
Cost per solved taskNot computable$1.32
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Sonnet 5.5 better than Qwen3.8 Max (0902) for coding?

Pick Claude Sonnet 5.5 for coding: it scores 87.3 on the Vibe Coding Index against 62.4 for Qwen3.8 Max (0902). Pick Qwen3.8 Max (0902) for output tokens 1.7x cheaper ($6.00 vs $10.00 per million) and work measured by LMArena Text: hard prompts or LMArena Text: hard prompts in English, where it leads.

Which is cheaper, Claude Sonnet 5.5 or Qwen3.8 Max (0902)?

Claude Sonnet 5.5 costs $2.00 per million input tokens and $10.00 per million output tokens; Qwen3.8 Max (0902) costs $2.00 and $6.00. Cost per solved task is known for Qwen3.8 Max (0902) only.

Which has the bigger context window, Claude Sonnet 5.5 or Qwen3.8 Max (0902)?

Neither: both take 1M tokens.

How many benchmarks is the Claude Sonnet 5.5 vs Qwen3.8 Max (0902) comparison based on?

86 benchmarks have a result for both models as of October 22, 2026. Claude Sonnet 5.5's coding index rests on 5 independent benchmarks and Qwen3.8 Max (0902)'s on 5. Where only one model has a result, the page says so instead of naming a winner.

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