Noometry

Model comparison

Claude Fable 5.1 vs Hy3

Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 44.2 on the Noometry Index. Hy3 costs 139× less per token, which makes it the better buy when Claude Fable 5.1's lead doesn't matter for your workload.

Last verified . 19 shared benchmarks.

Claude Fable 5.1 Anthropic

69.0

Rank #2 Confirmed

Hy3 Tencent

44.2

Rank #79 Confirmed

Summary

  • They share 19 benchmarks with published results for both. Claude Fable 5.1 scores higher in 8 categories and Hy3 in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Fable 5.1 leads 76.7 to 26.1.
  • The biggest single-benchmark swing is NYT Connections (extended): 90% for Claude Fable 5.1 and 41.2% for Hy3.
  • Hy3 is cheaper at $0.0825 / $0.33 per million input/output tokens, against $10 / $50 for Claude Fable 5.1.
  • Claude Fable 5.1 accepts more context: 1M tokens versus 262K.
  • Hy3 has downloadable open weights; the other is API-only.

Side by side

Claude Fable 5.1Hy3
ProviderAnthropicTencent
Noometry Index69.044.2
Released2026-09-012026-07-06
WeightsProprietaryOpen
Context window1M262K
Max output128K128K
Input $ / M tokens$10$0.0825
Output $ / M tokens$50$0.33
Results tracked5219

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Category by category

Coding Claude Fable 5.1 leads

Claude Fable 5.1: 74.7 (#1), Hy3: 46.8 (#63)

BenchmarkClaude Fable 5.1Hy3
LMArena WebDev17441508
LMArena Coding15281464
FrontierCode50.9%—
CursorBench51.8%—
FrontierSWE56.3%—
SciCode63.1%—
GSO88.2%—
WeirdML92.9%—
MirrorCode73.3%—
ALE-Bench2,143—

Agentic & Tool Use Not comparable

Claude Fable 5.1: 50.7 (#5), Hy3: —

BenchmarkClaude Fable 5.1Hy3
APEX-Agents68.6%—
Remote Labor Index17.9%—
GDP.pdf29.6%—
Vending-Bench 25,422—

Reasoning Claude Fable 5.1 leads

Claude Fable 5.1: 76.7 (#7), Hy3: 26.1 (#136)

BenchmarkClaude Fable 5.1Hy3
NYT Connections (extended)90%41.2%
LMArena Hard Prompts15261447
ARC-AGI-290%—
ARC-AGI-197.5%—
CritPt31.1%—
Chess Puzzles47%—
EBR-Bench57.1%—
Mystery Game Puzzles58%—
DTBench97.6%—
LMCA65.5%—
Epoch Capabilities Index164.7—

Math Claude Fable 5.1 leads

Claude Fable 5.1: 89.6 (#4), Hy3: 40.1 (#93)

BenchmarkClaude Fable 5.1Hy3
LMArena Math15251475
FrontierMath (Tiers 1-3)90.2%—
FrontierMath Tier 487.8%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
FrontierMath Erdős0%—

Knowledge Claude Fable 5.1 leads

Claude Fable 5.1: 69.6 (#6), Hy3: 40.8 (#114)

BenchmarkClaude Fable 5.1Hy3
LMArena Expert15351460
Humanity's Last Exam46.5%—
SimpleQA Verified70.8%—

Multimodal Not comparable

Claude Fable 5.1: 53.9 (#4), Hy3: —

BenchmarkClaude Fable 5.1Hy3
LMArena Vision1318—
Blueprint-Bench 241.9%—
Furniture Assembly70%—
LMArena Document1513—

Multilingual Claude Fable 5.1 leads

Claude Fable 5.1: 59.1 (#3), Hy3: 53.5 (#65)

BenchmarkClaude Fable 5.1Hy3
LMArena Non-English15071426
LMArena Chinese15861493
LMArena French15251461
LMArena German15001439
LMArena Japanese15431392
LMArena Korean15341395
LMArena Russian15211432
LMArena Spanish15161456

Instruction Following Claude Fable 5.1 leads

Claude Fable 5.1: 79.2 (#6), Hy3: 75.1 (#70)

BenchmarkClaude Fable 5.1Hy3
LMArena Instruction Following15171426

Long Context Claude Fable 5.1 leads

Claude Fable 5.1: 46.7 (#20), Hy3: 44.1 (#75)

BenchmarkClaude Fable 5.1Hy3
LMArena Longer Query15221442

Writing & Preference Claude Fable 5.1 leads

Claude Fable 5.1: 79.2 (#2), Hy3: 62.2 (#81)

BenchmarkClaude Fable 5.1Hy3
LMArena Text15101439
LMArena Creative Writing15071402
LMArena Multi-Turn14921436
EQ-Bench Creative Writing2162—

Frequently asked questions

Is Claude Fable 5.1 better than Hy3?

Claude Fable 5.1 is the stronger model overall, scoring 69.0 to 44.2 on the Noometry Index. Hy3 costs 139× less per token, which makes it the better buy when Claude Fable 5.1's lead doesn't matter for your workload.

Which is cheaper, Claude Fable 5.1 or Hy3?

Hy3 is cheaper. It lists at $0.0825 per million input tokens and $0.33 per million output tokens; Claude Fable 5.1 lists at $10 and $50.

Is Claude Fable 5.1 or Hy3 better for coding?

Claude Fable 5.1 scores higher on coding benchmarks: 74.7 versus 46.8 in the Noometry coding category.

Which has the bigger context window?

Claude Fable 5.1 does, with 1M tokens against 262K.

How many benchmarks do Claude Fable 5.1 and Hy3 share?

19 benchmarks have published results for both models. Claude Fable 5.1 has 52 scored results on Noometry and Hy3 has 19.

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