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Model comparison

Claude Fable 5 vs Hy3 Preview

Data verified

Head-to-head evidence from 16 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

83.68/100
No comparison
N/A
2 category wins0 category wins

Public leaderboard positions: Claude Fable 5 #2 (Supported); Hy3 Preview unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Claude Fable 5 and Hy3 Preview share 16 comparable benchmark results. 2 of 8 categories are comparable. 18 results are unique to Claude Fable 5; 6 to Hy3 Preview.

Updated July 23, 2026
Shared results
16
Claude Fable 5 only
18
Hy3 Preview only
6
Comparable categories
2 / 8

Treat this as a split decision. Claude Fable 5 makes more sense if coding is the priority or you need the larger 1M+ context window; Hy3 Preview is the better fit if you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 16 shared benchmark results across 4 evidence categories; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Claude Fable 5 and Hy3 Preview finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.

Claude Fable 5 is also the more expensive model on tokens at $10.00 input / $50.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Hy3 Preview. That is roughly Infinityx on output cost alone. Claude Fable 5 gives you the larger context window at 1M+, compared with 256K for Hy3 Preview.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for Claude Fable 5 and Hy3 Preview
CategoryClaude Fable 5ΔHy3 Preview
CodingClaude Fable 589.2Margin← 31.4Hy3 Preview57.8
AgenticClaude Fable 584.6Margin← 30.2Hy3 Preview54.4
KnowledgeClaude Fable 5Not measuredMarginNo overlapHy3 Preview33.8
MultimodalClaude Fable 557.9MarginNo overlapHy3 PreviewNot measured
Inst. FollowingClaude Fable 5Not measuredMarginNo overlapHy3 Preview63.1

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · Claude Fable 5B · Hy3 Preview

  1. Terminal-Bench 2.0

    Agentic
    Source ↗
    A 84.3%B 54.4%
    Winner: Claude Fable 5Δ 29.9
    Terminal-Bench 2.0: Claude Fable 5 scored 84.3%; Hy3 Preview scored 54.4%. Claude Fable 5 wins this benchmark.

  2. SWE-bench Verified

    Coding
    Source ↗
    A 95%B 74.4%
    Winner: Claude Fable 5Δ 20.6
    SWE-bench Verified: Claude Fable 5 scored 95%; Hy3 Preview scored 74.4%. Claude Fable 5 wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricClaude Fable 5Hy3 PreviewComparison
Input / output priceUSD per 1M tokensClaude Fable 5$10 input / $50 outputHy3 Preview$0 input / $0 outputHy3 Preview has the lower combined listed price.
Generation speedtokens per secondClaude Fable 5Not availableHy3 PreviewNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude Fable 5Not availableHy3 PreviewNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensClaude Fable 51M+Hy3 Preview256KClaude Fable 5 lists the larger context window.

Benchmark Deep Dive

AgenticClaude Fable 5 wins
BenchmarkClaude Fable 5Hy3 PreviewResult
Terminal-Bench 2.0Source 84.3%54.4%Claude Fable 5 leads
OSWorld-VerifiedSource 85%—Not comparable
GDPval-AASource 17481214Claude Fable 5 leads
AA Agentic IndexSource 52.8%30.7%Claude Fable 5 leads
τ²-bench resultsSource 98.5%—Not comparable
GDPval-AASource 62.4%35.7%Claude Fable 5 leads
AA BriefcaseSource 1574—Not comparable
AA AutomationBenchSource 48.6%—Not comparable
AA EnterpriseOps-GymSource 51.1%—Not comparable
AA Harvey LABSource 93.6%—Not comparable
AA Tau3 BankingSource 26.8%—Not comparable
terminalBenchHardSource 62.9%—Not comparable
aaTerminalBench21Source 84.6%—Not comparable
Gert LabsSource —36.91%Not comparable
CodingClaude Fable 5 wins
BenchmarkClaude Fable 5Hy3 PreviewResult
SWE-bench VerifiedSource 95%74.4%Claude Fable 5 leads
SWE-bench ProSource 80%—Not comparable
FrontierCode 1.1 MainSource 53.5%—Not comparable
Terminal-Bench 2.0Source 84.3%54.4%Claude Fable 5 leads
cursorBench31Source 70.6%—Not comparable
cursorBench32Source 70.5%—Not comparable
VulcanBench v3Source 87.0%—Not comparable
AA Coding IndexSource 76.5%58.8%Claude Fable 5 leads
AA-SciCodeSource 60.2%47.6%Claude Fable 5 leads
SciCodeSource —41.2%Not comparable
Reasoning
BenchmarkClaude Fable 5Hy3 PreviewResult
AA-LCRSource 70.0%66.7%Claude Fable 5 leads
CritPtSource 28.6%4.9%Claude Fable 5 leads
Knowledge
BenchmarkClaude Fable 5Hy3 PreviewResult
Artificial Analysis Intelligence IndexSource 59.9%41.2%Claude Fable 5 leads
AA-GPQA DiamondSource 92.6%89.7%Claude Fable 5 leads
AA-HLESource 53.3%31.6%Claude Fable 5 leads
AA-Omniscience IndexSource 40.2%-18.5%Claude Fable 5 leads
AA-Omniscience AccuracySource 61.4%31.5%Claude Fable 5 leads
AA-Omniscience Hallucination RateSource 54.9%73.0%Claude Fable 5 leads
GPQASource —87.2%Not comparable
GPQA-DSource —87.2%Not comparable
HLESource —25.5%Not comparable
Multimodal
BenchmarkClaude Fable 5Hy3 PreviewResult
Blueprint-Bench 2Source 38.6%—Not comparable
OfficeQA ProSource 57.9%—Not comparable
Design Arena WebsiteSource 1332—Not comparable
Inst. Following
BenchmarkClaude Fable 5Hy3 PreviewResult
AA-IFBenchSource 63.5%—Not comparable
IFBenchSource —63.1%Not comparable
Frequently Asked Questions (3)

Which is better, Claude Fable 5 or Hy3 Preview?

Claude Fable 5 and Hy3 Preview are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.

Which is better for coding, Claude Fable 5 or Hy3 Preview?

Claude Fable 5 has the edge for coding in this comparison, averaging 89.2 versus 57.8. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Claude Fable 5 or Hy3 Preview?

Claude Fable 5 has the edge for agentic tasks in this comparison, averaging 84.6 versus 54.4. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.

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