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Claude Fable 5 vs Kimi K2.6

Claude Fable 5 leads Kimi K2.6 on coding, 79.3 to 52.1 on the Vibe Coding Index, and Kimi K2.6 costs 12.5x less per output token ($4.00 vs $50.00 per million). Updated October 22, 2026; 105 benchmarks have a result for both.

Replace Claude Fable 5 Replace Kimi K2.6
Claude Fable 5Anthropic
Coding
79.3
Overall
79.0
Output $/M
$50.00
101
Kimi K2.6Moonshot AI
Coding
52.1
Overall
60.5
Output $/M
$4.00
4
vs boards won of 105 shared

Claude Fable 5 or Kimi K2.6: which to pick

Pick Claude Fable 5 for coding: it scores 79.3 on the Vibe Coding Index against 52.1 for Kimi K2.6.

Pick Kimi K2.6 for output tokens 12.5x cheaper ($4.00 vs $50.00 per million) and a lower cost per solved task ($0.35 against $2.16).

Model AClaude Fable 5Anthropic79.3/1006 independent benchmarks$2.16 per solved taskModel BKimi K2.6Moonshot AI52.1/1003 independent benchmarks$0.35 per solved task
Shared results
105
Claude Fable 5 only
22
Kimi K2.6 only
4
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, Kimi K2.6 52.1 from 3 benchmarks.
Widest category
Math, 31.7 points apart on average over 6 shared benchmarks.
Widest single gap
ProofBench: Claude Fable 5 95.0% against Kimi K2.6 16.0%, 79.0 points apart on a 0 to 100 scale.
Output price
Claude Fable 5 $50.00 against Kimi K2.6 $4.00 per million output tokens, 12.5x apart.
Context window
Claude Fable 5 takes 1M tokens, Kimi K2.6 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 Fable 5BarsKimi K2.6Ties
Coding170
Intelligence20
Agentic work132
Reasoning121
Math60
Knowledge110
Web design80
General321
All shared boards1014
CodingLike-for-likeSix of these boards feed the Vibe Coding Index170
Coding benchmarks for Claude Fable 5 and Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
LiveBench coding98.3%Not measuredOnly Claude Fable 5 measured
LMArena WebDev16241509Claude Fable 5
AA Coding Index76.561.8Claude Fable 5
LiveCodeBench (Vals AI)89.8%86.8%Claude Fable 5
SWE-bench Verified (Vals AI)95.0%76.2%Claude Fable 5
Terminal-Bench 4 (Vals AI)41.4%Not measuredOnly Claude Fable 5 measured
Vibe Code Bench (Vals AI)90.3%37.9%Claude Fable 5
Code migration (Vals AI)55.1%27.8%Claude Fable 5
ProgramBench (Vals AI)2.0%0.0%Claude Fable 5
Terminal-Bench 2.1 (Vals AI)80.5%53.6%Claude Fable 5
SciCode61.0%51.5%Claude Fable 5
Terminal-Bench Hard (Artificial Analysis run)62.9%43.9%Claude Fable 5
FrontierCode53.5%Not measuredOnly Claude Fable 5 measured
FrontierSWE47.0%Not measuredOnly Claude Fable 5 measured
GSO-Bench78.4%Not measuredOnly Claude Fable 5 measured
WeirdML91.9%55.9%Claude Fable 5
MirrorCode63.9%Not measuredOnly Claude Fable 5 measured
ALE-Bench2041.31092.7Claude Fable 5
LMArena Text: coding15181489Claude Fable 5
LMArena Text: software and IT15131484Claude Fable 5
LMArena WebDev: React16311505Claude Fable 5
LMArena WebDev: HTML16511485Claude Fable 5
LMArena WebDev: from an image16231521Claude Fable 5
Neither model has a result on the other 16 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Claude Fable 5 and Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
AA Intelligence Index49.627.0Claude Fable 5
Epoch Capabilities Index163.4150.9Claude Fable 5
Agentic workLike-for-likePublic boards, shown as published, kept out of the index132
Agentic work benchmarks for Claude Fable 5 and Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
AA Agentic Index50.720.5Claude Fable 5
Design Arena: agents building web apps12611268Kimi K2.6
Design Arena: agents building full-stack apps12801155Claude Fable 5
Design Arena: agents building mobile apps12641156Claude Fable 5
Design Arena: agents building Android apps12841161Claude Fable 5
Design Arena: agents building Godot games12921120Claude Fable 5
Design Arena: agents building games12851141Claude Fable 5
Design Arena: HTML slides12271135Claude Fable 5
Design Arena: PowerPoint slides12701103Claude Fable 5
Design Arena: spreadsheetsNot measured1276Only Kimi K2.6 measured
LiveBench research86.9%Not measuredOnly Claude Fable 5 measured
LiveBench browser92.0%Not measuredOnly Claude Fable 5 measured
LiveBench long agentic53.2%Not measuredOnly Claude Fable 5 measured
Finance Agent (Vals AI)56.3%44.9%Claude Fable 5
Tax Agent Bench (Vals AI)38.3%12.4%Claude Fable 5
Legal Research Bench (Vals AI)49.5%15.9%Claude Fable 5
Excel Modeling Benchmark (Vals AI)73.7%57.9%Claude Fable 5
Terminal-Bench-Science (Vals AI)15.7%Not measuredOnly Claude Fable 5 measured
τ²-Bench Telecom98.5%95.9%Claude Fable 5
APEX-Agents63.6%Not measuredOnly Claude Fable 5 measured
Remote Labor Index16.1%Not measuredOnly Claude Fable 5 measured
OSWorld 2.0Not measured4.6%Only Kimi K2.6 measured
PostTrainBench41.8%Not measuredOnly Claude Fable 5 measured
Vending-Bench 2$5,680$6,205Kimi K2.6
LMArena Search1229Not measuredOnly Claude Fable 5 measured
Neither model has a result on the other 16 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index121
Reasoning benchmarks for Claude Fable 5 and Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
GPQA Diamond93.2%89.1%Claude Fable 5
LiveBench reasoning89.7%Not measuredOnly Claude Fable 5 measured
MMMU Pro (Vals AI)89.3%86.3%Claude Fable 5
GPQA Diamond (Artificial Analysis run)92.6%91.1%Claude Fable 5
Humanity's Last Exam (Artificial Analysis run)55.5%37.5%Claude Fable 5
GPQA Diamond (Epoch AI run)85.9%90.8%Kimi K2.6
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%20.0%Claude Fable 5
Mystery game puzzles52.0%18.0%Claude Fable 5
EBR-bench39.5%2.4%Claude Fable 5
LMArena Text: hard prompts15071470Claude Fable 5
LMArena Text: expert15341491Claude Fable 5
LMArena Text: hard prompts in English15091471Claude Fable 5
LMArena Vision: diagrams13571298Claude Fable 5
LMArena Vision: homework13611310Claude Fable 5
Kagi LLM Benchmark91.4%Not measuredOnly Claude Fable 5 measured
Neither model has a result on the other 4 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index60
Math benchmarks for Claude Fable 5 and Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
OTIS Mock AIME100.0%96.1%Claude Fable 5
FrontierMath, tiers 1 to 387.0%57.2%Claude Fable 5
FrontierMath, tier 490.2%25.6%Claude Fable 5
ProofBench95.0%16.0%Claude Fable 5
LMArena Text: math15161474Claude Fable 5
LMArena Text: mathematical work15151480Claude Fable 5
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index110
Knowledge benchmarks for Claude Fable 5 and Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
MMLU Pro91.5%87.6%Claude Fable 5
LegalBench (Vals AI)88.6%84.7%Claude Fable 5
CaseLaw (Vals AI)Not measured61.2%Only Kimi K2.6 measured
CorpFin (Vals AI)71.8%66.7%Claude Fable 5
TaxEval (Vals AI)76.9%74.7%Claude Fable 5
MortgageTax (Vals AI)68.9%65.8%Claude Fable 5
MedCode (Vals AI)56.1%40.1%Claude Fable 5
SimpleQA Verified70.7%34.9%Claude Fable 5
LMArena Text: science15061468Claude Fable 5
LMArena Text: medicine and healthcare14801457Claude Fable 5
LMArena Text: legal and government14981462Claude Fable 5
LMArena Text: business and finance14801445Claude Fable 5
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index80
Web design benchmarks for Claude Fable 5 and Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
Design Arena: websites12951268Claude Fable 5
Design Arena: UI components13161263Claude Fable 5
Design Arena: game dev13351250Claude Fable 5
Design Arena: data viz13041249Claude Fable 5
Design Arena: 3D13181267Claude Fable 5
Design Arena: all code categories13101271Claude Fable 5
Design Arena: SVG13021181Claude Fable 5
Design Arena: ASCII art13291165Claude Fable 5
LiveBench design84.7%Not measuredOnly Claude Fable 5 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index321
General benchmarks for Claude Fable 5 and Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
LiveBench data analysis80.5%Not measuredOnly Claude Fable 5 measured
Public Benefits Bench (Vals AI)70.4%56.6%Claude Fable 5
SAGE (Vals AI)51.9%50.2%Claude Fable 5
MedScribe (Vals AI)88.5%78.2%Claude Fable 5
Vals Multimodal Index74.2%56.4%Claude Fable 5
IFBench63.5%76.0%Kimi K2.6
Long context reasoning (AA-LCR)82.3%81.0%Claude Fable 5
DTBench98.4%90.9%Claude Fable 5
LMCA61.2%37.3%Claude Fable 5
Surface Evolver Bench95.0%Not measuredOnly Claude Fable 5 measured
Furniture assembly35.8%21.7%Claude Fable 5
ExploitBenchNot measured18.4%Only Kimi K2.6 measured
LMArena Text14911455Claude Fable 5
LMArena Text: instruction following15021451Claude Fable 5
LMArena Text: creative writing14941434Claude Fable 5
LMArena Vision13251282Claude Fable 5
LMArena Text: English14981460Claude Fable 5
LMArena Text: non-English14821446Claude Fable 5
LMArena Text: Chinese15431520Claude Fable 5
LMArena Text: German14861451Claude Fable 5
LMArena Text: Japanese15041443Claude Fable 5
LMArena Text: Korean14871427Claude Fable 5
LMArena Text: French15051471Claude Fable 5
LMArena Text: Spanish14981464Claude Fable 5
LMArena Text: Russian15031446Claude Fable 5
LMArena Text: Polish14941438Claude Fable 5
LMArena Text: multi-turn15041453Claude Fable 5
LMArena Text: longer queries15101468Claude Fable 5
LMArena Text: writing and language15011439Claude Fable 5
LMArena Text: entertainment and media14821428Claude Fable 5
LMArena Vision: English13231287Claude Fable 5
LMArena Vision: Chinese13731346Claude Fable 5
LMArena Vision: reading text13371291Claude Fable 5
LMArena Vision: humor13411280Claude Fable 5
LMArena Vision: creative writing13381273Claude Fable 5
LMArena Document14961451Claude Fable 5
Neither model has a result on the other 10 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 Kimi K2.6
BenchmarkClaude Fable 5Kimi K2.6Leader
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
Kimi K2.6$0.0029Fits in one request

Kimi K2.6 costs less

Repository review

50K input + 3K output tokens

Claude Fable 5$0.650Fits in one request
Kimi K2.6$0.059Fits in one request

Kimi K2.6 costs less

Agent loop

200K input + 10K output tokens

Claude Fable 5$2.50Fits in one request
Kimi K2.6$0.230Fits in one request

Kimi K2.6 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 Kimi K2.6
SpecificationAnthropic Claude Fable 5MoonshotAI Kimi K2.6
MakerAnthropicMoonshot AI
WeightsNo public weights listedOpen weights
ReleasedJune 9, 2026April 20, 2026
Context window1M262K
Input $/Mtok$10.00$0.95
Output $/Mtok$50.00$4.00
Coding index79.352.1
Independent measurements behind it63
Cost per solved task$2.16$0.35
SourceOpenRouter listingOpenRouter listing

Questions

Is Claude Fable 5 better than Kimi K2.6 for coding?

Pick Claude Fable 5 for coding: it scores 79.3 on the Vibe Coding Index against 52.1 for Kimi K2.6. Pick Kimi K2.6 for output tokens 12.5x cheaper ($4.00 vs $50.00 per million) and a lower cost per solved task ($0.35 against $2.16).

Which is cheaper, Claude Fable 5 or Kimi K2.6?

Claude Fable 5 costs $10.00 per million input tokens and $50.00 per million output tokens; Kimi K2.6 costs $0.95 and $4.00. Per solved SWE-bench Verified task, Claude Fable 5 costs $2.16 and Kimi K2.6 $0.35.

Which has the bigger context window, Claude Fable 5 or Kimi K2.6?

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

How many benchmarks is the Claude Fable 5 vs Kimi K2.6 comparison based on?

105 benchmarks have a result for both models as of October 22, 2026. Claude Fable 5's coding index rests on 6 independent benchmarks and Kimi K2.6's on 3. Where only one model has a result, the page says so instead of naming a winner.

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