Skip to main content
BenchLM

Model comparison

Claude Opus 4.8 vs Hy3 Preview

Data verified

Head-to-head evidence from 19 shared benchmark results across 5 categories. Overall scores shown here use BenchLM's provisional ranking lane.

85/100
Margin
31.0pts
← winning
54/100
3 category wins0 category wins

Verified leaderboard positions: Claude Opus 4.8 #3; Hy3 Preview unranked

Evidence parity. Claude Opus 4.8 and Hy3 Preview share 19 comparable benchmark results. 3 of 8 categories are comparable. 34 results are unique to Claude Opus 4.8; 2 to Hy3 Preview.

Updated July 12, 2026
Shared results
19
Claude Opus 4.8 only
34
Hy3 Preview only
2
Comparable categories
3 / 8

Pick Claude Opus 4.8 if you want the stronger benchmark profile. Hy3 Preview only becomes the better choice if you want the cheaper token bill.

Confidence note. This is a partial-evidence comparison with 19 shared benchmark results across 5 evidence categories; 3 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Claude Opus 4.8 is clearly ahead on the provisional aggregate, 85 to 54. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude Opus 4.8's sharpest advantage is in knowledge, where it averages 62.7 against 33.8. The single biggest benchmark swing on the page is HLE, 57.9% to 25.5%.

Claude Opus 4.8 is also the more expensive model on tokens at $5.00 input / $25.00 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 Opus 4.8 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 Opus 4.8 and Hy3 Preview
CategoryClaude Opus 4.8ΔHy3 Preview
KnowledgeClaude Opus 4.862.7Margin← 28.9Hy3 Preview33.8
AgenticClaude Opus 4.880.3Margin← 25.9Hy3 Preview54.4
CodingClaude Opus 4.876.4Margin← 14.8Hy3 Preview61.6
MathClaude Opus 4.853.9MarginNo overlapHy3 PreviewNot measured
MultimodalClaude Opus 4.877.0MarginNo overlapHy3 PreviewNot measured
Inst. FollowingClaude Opus 4.8Not measuredMarginNo overlapHy3 Preview63.1

Decisive benchmark drivers

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

More
A · Claude Opus 4.8B · Hy3 Preview

  1. HLE

    Knowledge
    Source ↗
    A 57.9%B 25.5%
    Winner: Claude Opus 4.8Δ 32.4
    HLE: Claude Opus 4.8 scored 57.9%; Hy3 Preview scored 25.5%. Claude Opus 4.8 wins this benchmark.

  2. Terminal-Bench 2.0

    Agentic
    Source ↗
    A 74.6%B 54.4%
    Winner: Claude Opus 4.8Δ 20.2
    Terminal-Bench 2.0: Claude Opus 4.8 scored 74.6%; Hy3 Preview scored 54.4%. Claude Opus 4.8 wins this benchmark.

  3. SWE-bench Verified

    Coding
    Source ↗
    A 88.6%B 74.4%
    Winner: Claude Opus 4.8Δ 14.2
    SWE-bench Verified: Claude Opus 4.8 scored 88.6%; Hy3 Preview scored 74.4%. Claude Opus 4.8 wins this benchmark.

  4. GPQA

    Knowledge
    Source ↗
    A 93.6%B 87.2%
    Winner: Claude Opus 4.8Δ 6.4
    GPQA: Claude Opus 4.8 scored 93.6%; Hy3 Preview scored 87.2%. Claude Opus 4.8 wins this benchmark.

Operational comparison

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

MetricClaude Opus 4.8Hy3 PreviewComparison
Input / output priceUSD per 1M tokensClaude Opus 4.8$5 input / $25 outputHy3 Preview$0 input / $0 outputHy3 Preview has the lower combined listed price.
Generation speedtokens per secondClaude Opus 4.8Not availableHy3 PreviewNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude Opus 4.8Not availableHy3 PreviewNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensClaude Opus 4.81MHy3 Preview256KClaude Opus 4.8 lists the larger context window.

Benchmark Deep Dive

AgenticClaude Opus 4.8 wins
BenchmarkClaude Opus 4.8Hy3 PreviewResult
Terminal-Bench 2.0Source 74.6%54.4%Claude Opus 4.8 leads
BrowseCompSource 84.3%—Not comparable
DeepSearchQASource 93.1%—Not comparable
OSWorld-VerifiedSource 83.4%—Not comparable
Finance Agent v2Source 53.9%—Not comparable
GDPval-AASource 1600—Not comparable
MCP AtlasSource 82.2%—Not comparable
ToolathlonSource 59.9%—Not comparable
Gert LabsSource 72.97%36.91%Claude Opus 4.8 leads
AA Agentic IndexSource 47.2%—Not comparable
Tau2-TelecomSource 94.4%92.7%Claude Opus 4.8 leads
GDPval-AASource 55.0%—Not comparable
ResearchClawBenchSource 21.1%—Not comparable
OSWorld 2.0Source 20.6%—Not comparable
AA BriefcaseSource 1354—Not comparable
AA AutomationBenchSource 48.5%—Not comparable
AA EnterpriseOps-GymSource 44.0%—Not comparable
AA Harvey LABSource 7.5%—Not comparable
AA Tau3 BankingSource 27.6%—Not comparable
CodingClaude Opus 4.8 wins
BenchmarkClaude Opus 4.8Hy3 PreviewResult
SWE-bench VerifiedSource 88.6%74.4%Claude Opus 4.8 leads
SWE-bench ProSource 69.2%—Not comparable
SWE MultilingualSource 84.4%—Not comparable
SWE MultimodalSource 38.4%—Not comparable
Terminal-Bench 2.0Source 74.6%54.4%Claude Opus 4.8 leads
cursorBench31Source 58.4%—Not comparable
cursorBench32Source 62.3%—Not comparable
AA Coding IndexSource 74.3%—Not comparable
Terminal-Bench HardSource 58.3%34.1%Claude Opus 4.8 leads
AA-SciCodeSource 53.5%41.2%Claude Opus 4.8 leads
FrontierCodeSource 46.5%—Not comparable
AA Terminal-Bench 2.1Source 84.6%—Not comparable
SciCodeSource —41.2%Not comparable
Reasoning
BenchmarkClaude Opus 4.8Hy3 PreviewResult
AA-LCRSource 67.7%54.7%Claude Opus 4.8 leads
CritPtSource 20.9%4.6%Claude Opus 4.8 leads
KnowledgeClaude Opus 4.8 wins
BenchmarkClaude Opus 4.8Hy3 PreviewResult
GPQASource 93.6%87.2%Claude Opus 4.8 leads
GPQA-DSource 93.6%87.2%Claude Opus 4.8 leads
HLESource 57.9%25.5%Claude Opus 4.8 leads
HLE w/o toolsSource 49.8%—Not comparable
Artificial Analysis Intelligence IndexSource 55.7%33.6%Claude Opus 4.8 leads
AA-GPQA DiamondSource 92.0%86.7%Claude Opus 4.8 leads
AA-HLESource 45.7%25.5%Claude Opus 4.8 leads
AA-Omniscience IndexSource 27.4%-34.6%Claude Opus 4.8 leads
AA-Omniscience AccuracySource 46.6%28.0%Claude Opus 4.8 leads
AA-Omniscience Hallucination RateSource 35.9%86.9%Claude Opus 4.8 leads
Math
BenchmarkClaude Opus 4.8Hy3 PreviewResult
USAMO 2026Source 96.7%—Not comparable
FrontierMath v2 (Tiers 1-3)Source 47.241%—Not comparable
FrontierMath v2 (Tier 4)Source 31.250%—Not comparable
Multilingual
BenchmarkClaude Opus 4.8Hy3 PreviewResult
INCLUDESource 87.6%—Not comparable
Multimodal
BenchmarkClaude Opus 4.8Hy3 PreviewResult
OfficeQA ProSource 66.2%—Not comparable
ScreenSpot ProSource 87.9%—Not comparable
CharXivSource 89.9%—Not comparable
CharXiv w/o toolsSource 80.5%—Not comparable
Design Arena WebsiteSource 1281—Not comparable
Inst. Following
BenchmarkClaude Opus 4.8Hy3 PreviewResult
AA-IFBenchSource 62.2%63.1%Hy3 Preview leads
IFBenchSource —63.1%Not comparable
Frequently Asked Questions (4)

Which is better, Claude Opus 4.8 or Hy3 Preview?

Claude Opus 4.8 is ahead on BenchLM's provisional leaderboard, 85 to 54. The biggest single separator in this matchup is HLE, where the scores are 57.9% and 25.5%.

Which is better for knowledge tasks, Claude Opus 4.8 or Hy3 Preview?

Claude Opus 4.8 has the edge for knowledge tasks in this comparison, averaging 62.7 versus 33.8. Inside this category, AA-Omniscience Index is the benchmark that creates the most daylight between them.

Which is better for coding, Claude Opus 4.8 or Hy3 Preview?

Claude Opus 4.8 has the edge for coding in this comparison, averaging 76.4 versus 61.6. Inside this category, Terminal-Bench Hard is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Claude Opus 4.8 or Hy3 Preview?

Claude Opus 4.8 has the edge for agentic tasks in this comparison, averaging 80.3 versus 54.4. Inside this category, Gert Labs is the benchmark that creates the most daylight between them.

Related Comparisons

Explore More

Anthropic Compare Pricing Methodology Find Your Best LLM Overall Rankings
Last updated: July 12, 2026

The AI models change fast. We track them for you.

A weekly brief for engineers and researchers covering new models, ranking shifts, and pricing changes.

Free. No spam. Unsubscribe anytime.