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Claude Fable 5 vs Qwen3.8 Max (0902)

Claude Fable 5 leads Qwen3.8 Max (0902) on coding, 79.3 to 62.4 on the Vibe Coding Index, and Qwen3.8 Max (0902) costs 8.3x less per output token ($6.00 vs $50.00 per million). Updated October 22, 2026; 106 benchmarks have a result for both.

Replace Claude Fable 5 Replace Qwen3.8 Max (0902)
Claude Fable 5Anthropic
Coding
79.3
Overall
79.0
Output $/M
$50.00
90
Qwen3.8 Max (0902)Qwen
Coding
62.4
Overall
68.9
Output $/M
$6.00
15
vs boards won of 106 shared, 1 tied

Claude Fable 5 or Qwen3.8 Max (0902): which to pick

Pick Claude Fable 5 for coding: it scores 79.3 on the Vibe Coding Index against 62.4 for Qwen3.8 Max (0902).

Pick Qwen3.8 Max (0902) for output tokens 8.3x cheaper ($6.00 vs $50.00 per million) and a lower cost per solved task ($1.32 against $2.16).

Model AClaude Fable 5Anthropic79.3/1006 independent benchmarks$2.16 per solved taskModel BQwen3.8 Max (0902)Qwen62.4/1005 independent benchmarks$1.32 per solved task
Shared results
106
Claude Fable 5 only
21
Qwen3.8 Max (0902) only
7
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 Fable 5 79.3 from 6 benchmarks, Qwen3.8 Max (0902) 62.4 from 5 benchmarks.
Widest category
Math, 16.6 points apart on average over 6 shared benchmarks.
Widest single gap
LiveBench browser: Claude Fable 5 92.0% against Qwen3.8 Max (0902) 32.0%, 60.0 points apart on a 0 to 100 scale.
Output price
Claude Fable 5 $50.00 against Qwen3.8 Max (0902) $6.00 per million output tokens, 8.3x 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 Fable 5BarsQwen3.8 Max (0902)Ties
Coding143
Intelligence20
Agentic work134
Reasoning103
Math501 tie
Knowledge83
Web design62
General320
All shared boards90151 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index143
Coding benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 5Qwen3.8 Max (0902)Leader
LiveBench coding98.3%60.3%Claude Fable 5
LMArena WebDev16241674Qwen3.8 Max (0902)
AA Coding Index76.576.2Claude Fable 5
LiveCodeBench (Vals AI)89.8%87.8%Claude Fable 5
SWE-bench Verified (Vals AI)95.0%85.6%Claude Fable 5
Terminal-Bench 4 (Vals AI)41.4%34.3%Claude Fable 5
Vibe Code Bench (Vals AI)90.3%64.7%Claude Fable 5
Code migration (Vals AI)55.1%24.0%Claude Fable 5
ProgramBench (Vals AI)2.0%0.0%Claude Fable 5
IOI (Vals AI)Not measured68.9%Only Qwen3.8 Max (0902) measured
Terminal-Bench 2.1 (Vals AI)80.5%67.4%Claude Fable 5
SWE-bench Multimodal (Vals AI)Not measured42.5%Only Qwen3.8 Max (0902) measured
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)Not measured28.6%Only Qwen3.8 Max (0902) measured
SciCode61.0%53.2%Claude Fable 5
Terminal-Bench Hard (Artificial Analysis run)62.9%Not measuredOnly Claude Fable 5 measured
FrontierCode53.5%Not measuredOnly Claude Fable 5 measured
FrontierSWE47.0%17.8%Claude Fable 5
GSO-Bench78.4%Not measuredOnly Claude Fable 5 measured
WeirdML91.9%Not measuredOnly Claude Fable 5 measured
MirrorCode63.9%Not measuredOnly Claude Fable 5 measured
ALE-Bench2041.3Not measuredOnly Claude Fable 5 measured
LMArena Text: coding15181502Claude Fable 5
LMArena Text: software and IT15131498Claude Fable 5
LMArena WebDev: React16311692Qwen3.8 Max (0902)
LMArena WebDev: HTML16511649Claude Fable 5
LMArena WebDev: from an image16231637Qwen3.8 Max (0902)
Neither model has a result on the other 11 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 5Qwen3.8 Max (0902)Leader
AA Intelligence Index49.645.4Claude Fable 5
Epoch Capabilities Index163.4157.4Claude Fable 5
Agentic workLike-for-likePublic boards, shown as published, kept out of the index134
Agentic work benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 5Qwen3.8 Max (0902)Leader
AA Agentic Index50.756.0Qwen3.8 Max (0902)
Design Arena: agents building web apps12611300Qwen3.8 Max (0902)
Design Arena: agents building full-stack apps12801305Qwen3.8 Max (0902)
Design Arena: agents building mobile apps12641224Claude Fable 5
Design Arena: agents building Android apps12841196Claude Fable 5
Design Arena: agents building Godot games12921234Claude Fable 5
Design Arena: agents building games1285Not measuredOnly Claude Fable 5 measured
Design Arena: HTML slides1227Not measuredOnly Claude Fable 5 measured
Design Arena: PowerPoint slides12701233Claude Fable 5
Design Arena: spreadsheetsNot measured967Only Qwen3.8 Max (0902) measured
LiveBench research86.9%69.9%Claude Fable 5
LiveBench browser92.0%32.0%Claude Fable 5
LiveBench long agentic53.2%42.3%Claude Fable 5
Finance Agent (Vals AI)56.3%50.6%Claude Fable 5
Tax Agent Bench (Vals AI)38.3%32.1%Claude Fable 5
Legal Research Bench (Vals AI)49.5%47.6%Claude Fable 5
Excel Modeling Benchmark (Vals AI)73.7%60.1%Claude Fable 5
Terminal-Bench-Science (Vals AI)15.7%12.9%Claude Fable 5
τ²-Bench Telecom98.5%Not measuredOnly Claude Fable 5 measured
APEX-Agents63.6%63.3%Claude Fable 5
Remote Labor Index16.1%Not measuredOnly Claude Fable 5 measured
PostTrainBench41.8%Not measuredOnly Claude Fable 5 measured
Vending-Bench 2$5,680Not measuredOnly Claude Fable 5 measured
LMArena Search12291261Qwen3.8 Max (0902)
Neither model has a result on the other 17 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index103
Reasoning benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 5Qwen3.8 Max (0902)Leader
GPQA Diamond93.2%93.7%Qwen3.8 Max (0902)
LiveBench reasoning89.7%88.2%Claude Fable 5
MysteryMechanism (Vals AI)Not measured23.9%Only Qwen3.8 Max (0902) measured
MMMU Pro (Vals AI)89.3%88.0%Claude Fable 5
GPQA Diamond (Artificial Analysis run)92.6%92.8%Qwen3.8 Max (0902)
Humanity's Last Exam (Artificial Analysis run)55.5%43.1%Claude Fable 5
GPQA Diamond (Epoch AI run)85.9%92.7%Qwen3.8 Max (0902)
ARC-AGI98.5%Not measuredOnly Claude Fable 5 measured
ARC-AGI-289.2%Not measuredOnly Claude Fable 5 measured
SimpleBench81.9%Not measuredOnly Claude Fable 5 measured
Chess puzzles47.0%46.0%Claude Fable 5
Mystery game puzzles52.0%38.0%Claude Fable 5
EBR-bench39.5%Not measuredOnly Claude Fable 5 measured
LMArena Text: hard prompts15071496Claude Fable 5
LMArena Text: expert15341507Claude Fable 5
LMArena Text: hard prompts in English15091503Claude Fable 5
LMArena Vision: diagrams13571323Claude Fable 5
LMArena Vision: homework13611336Claude Fable 5
Kagi LLM Benchmark91.4%Not measuredOnly Claude Fable 5 measured
Neither model has a result on the other 3 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index50
Math benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 5Qwen3.8 Max (0902)Leader
OTIS Mock AIME100.0%100.0%Tie
FrontierMath, tiers 1 to 387.0%74.7%Claude Fable 5
FrontierMath, tier 490.2%46.3%Claude Fable 5
ProofBench95.0%58.0%Claude Fable 5
LMArena Text: math15161501Claude Fable 5
LMArena Text: mathematical work15151491Claude Fable 5
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index83
Knowledge benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 5Qwen3.8 Max (0902)Leader
MMLU Pro91.5%88.6%Claude Fable 5
LegalBench (Vals AI)88.6%83.6%Claude Fable 5
CorpFin (Vals AI)71.8%65.8%Claude Fable 5
TaxEval (Vals AI)76.9%75.5%Claude Fable 5
MortgageTax (Vals AI)68.9%64.0%Claude Fable 5
MedCode (Vals AI)56.1%40.7%Claude Fable 5
SimpleQA Verified70.7%47.3%Claude Fable 5
LMArena Text: science15061512Qwen3.8 Max (0902)
LMArena Text: medicine and healthcare14801503Qwen3.8 Max (0902)
LMArena Text: legal and government14981492Claude Fable 5
LMArena Text: business and finance14801480Qwen3.8 Max (0902)
Neither model has a result on the other 7 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index62
Web design benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 5Qwen3.8 Max (0902)Leader
Design Arena: websites12951275Claude Fable 5
Design Arena: UI components13161338Qwen3.8 Max (0902)
Design Arena: game dev13351312Claude Fable 5
Design Arena: data viz13041281Claude Fable 5
Design Arena: 3D13181336Qwen3.8 Max (0902)
Design Arena: all code categories13101293Claude Fable 5
Design Arena: SVG1302Not measuredOnly Claude Fable 5 measured
Design Arena: ASCII art13291200Claude Fable 5
LiveBench design84.7%78.6%Claude Fable 5
GeneralLike-for-likePublic boards, shown as published, kept out of the index320
General benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 5Qwen3.8 Max (0902)Leader
LiveBench data analysis80.5%78.4%Claude Fable 5
Public Benefits Bench (Vals AI)70.4%67.1%Claude Fable 5
SAGE (Vals AI)51.9%51.2%Claude Fable 5
MedScribe (Vals AI)88.5%85.0%Claude Fable 5
Vals Multimodal Index74.2%65.4%Claude Fable 5
IFBench63.5%Not measuredOnly Claude Fable 5 measured
Long context reasoning (AA-LCR)82.3%80.3%Claude Fable 5
DTBench98.4%92.0%Claude Fable 5
LMCA61.2%46.2%Claude Fable 5
Surface Evolver Bench95.0%Not measuredOnly Claude Fable 5 measured
Furniture assembly35.8%20.0%Claude Fable 5
LMArena Text14911483Claude Fable 5
LMArena Text: instruction following15021481Claude Fable 5
LMArena Text: creative writing14941477Claude Fable 5
LMArena Vision13251313Claude Fable 5
LMArena Text: English14981491Claude Fable 5
LMArena Text: non-English14821473Claude Fable 5
LMArena Text: Chinese15431539Claude Fable 5
LMArena Text: German14861478Claude Fable 5
LMArena Text: Japanese15041473Claude Fable 5
LMArena Text: Korean14871460Claude Fable 5
LMArena Text: French15051498Claude Fable 5
LMArena Text: Spanish14981489Claude Fable 5
LMArena Text: Russian15031482Claude Fable 5
LMArena Text: Polish14941471Claude Fable 5
LMArena Text: multi-turn15041489Claude Fable 5
LMArena Text: longer queries15101488Claude Fable 5
LMArena Text: writing and language15011477Claude Fable 5
LMArena Text: entertainment and media14821464Claude Fable 5
LMArena Vision: English13231311Claude Fable 5
LMArena Vision: Chinese13731358Claude Fable 5
LMArena Vision: reading text13371322Claude Fable 5
LMArena Vision: humor13411304Claude Fable 5
LMArena Vision: creative writing13381312Claude Fable 5
LMArena Document1496Not measuredOnly Claude Fable 5 measured
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
Image generation benchmarks for Claude Fable 5 and Qwen3.8 Max (0902)
BenchmarkClaude Fable 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 Fable 5$0.035Fits 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 Fable 5$0.650Fits 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 Fable 5$2.50Fits 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 Fable 5 and Qwen3.8 Max (0902)
SpecificationAnthropic Claude Fable 5Qwen3.8 Max (0902)
MakerAnthropicQwen
WeightsNo public weights listedNo public weights listed
ReleasedJune 9, 2026September 3, 2026
Context window1M1M
Input $/Mtok$10.00$2.00
Output $/Mtok$50.00$6.00
Coding index79.362.4
Independent measurements behind it65
Cost per solved task$2.16$1.32
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Fable 5 better than Qwen3.8 Max (0902) for coding?

Pick Claude Fable 5 for coding: it scores 79.3 on the Vibe Coding Index against 62.4 for Qwen3.8 Max (0902). Pick Qwen3.8 Max (0902) for output tokens 8.3x cheaper ($6.00 vs $50.00 per million) and a lower cost per solved task ($1.32 against $2.16).

Which is cheaper, Claude Fable 5 or Qwen3.8 Max (0902)?

Claude Fable 5 costs $10.00 per million input tokens and $50.00 per million output tokens; Qwen3.8 Max (0902) costs $2.00 and $6.00. Per solved SWE-bench Verified task, Claude Fable 5 costs $2.16 and Qwen3.8 Max (0902) $1.32.

Which has the bigger context window, Claude Fable 5 or Qwen3.8 Max (0902)?

Neither: both take 1M tokens.

How many benchmarks is the Claude Fable 5 vs Qwen3.8 Max (0902) comparison based on?

106 benchmarks have a result for both models as of October 22, 2026. Claude Fable 5's coding index rests on 6 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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