Model comparison
Claude Sonnet 5 vs Hy3 Preview
Head-to-head evidence from 17 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude Sonnet 5 #29 (Estimated); Hy3 Preview unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude Sonnet 5 and Hy3 Preview share 17 comparable benchmark results. 3 of 8 categories are comparable. 19 results are unique to Claude Sonnet 5; 5 to Hy3 Preview.
Updated July 23, 2026- Shared results
- 17
- Claude Sonnet 5 only
- 19
- Hy3 Preview only
- 5
- Comparable categories
- 3 / 8
Treat this as a split decision. Claude Sonnet 5 makes more sense if agentic 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 17 shared benchmark results across 4 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 Sonnet 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 Sonnet 5 is also the more expensive model on tokens at $2.00 input / $10.00 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 Sonnet 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 | Claude Sonnet 5 | Δ | Hy3 Preview |
|---|---|---|---|
| Agentic | Claude Sonnet 581.9 | Margin← 27.5 | Hy3 Preview54.4 |
| Knowledge | Claude Sonnet 557.4 | Margin← 23.6 | Hy3 Preview33.8 |
| Coding | Claude Sonnet 576.7 | Margin← 18.9 | Hy3 Preview57.8 |
| Multimodal | Claude Sonnet 588.3 | MarginNo overlap | Hy3 PreviewNot measured |
| Inst. Following | Claude Sonnet 5Not measured | MarginNo overlap | Hy3 Preview63.1 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
HLE
KnowledgeA 57.4%B 25.5%Winner: Claude Sonnet 5Δ 31.9HLE: Claude Sonnet 5 scored 57.4%; Hy3 Preview scored 25.5%. Claude Sonnet 5 wins this benchmark. - Source ↗
Terminal-Bench 2.0
AgenticA 80.4%B 54.4%Winner: Claude Sonnet 5Δ 26Terminal-Bench 2.0: Claude Sonnet 5 scored 80.4%; Hy3 Preview scored 54.4%. Claude Sonnet 5 wins this benchmark. - Source ↗
SWE-bench Verified
CodingA 85.2%B 74.4%Winner: Claude Sonnet 5Δ 10.8SWE-bench Verified: Claude Sonnet 5 scored 85.2%; Hy3 Preview scored 74.4%. Claude Sonnet 5 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude Sonnet 5 | Hy3 Preview | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude Sonnet 5$2 input / $10 output | Hy3 Preview$0 input / $0 output | Hy3 Preview has the lower combined listed price. |
| Generation speedtokens per second | Claude Sonnet 5Not available | Hy3 PreviewNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude Sonnet 5Not available | Hy3 PreviewNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude Sonnet 51M | Hy3 Preview256K | Claude Sonnet 5 lists the larger context window. |
Benchmark Deep Dive
AgenticClaude Sonnet 5 wins14 benchmarks
| Benchmark | Claude Sonnet 5 | Hy3 Preview | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 80.4% | 54.4% | Claude Sonnet 5 leads |
| BrowseCompSource | 84.7% | — | Not comparable |
| HLE w/ toolsSource | 57.4% | — | Not comparable |
| OSWorld-VerifiedSource | 81.2% | — | Not comparable |
| GDPval-AASource | 1607 | 1214 | Claude Sonnet 5 leads |
| AA Agentic IndexSource | 46.7% | 30.7% | Claude Sonnet 5 leads |
| GDPval-AASource | 55.4% | 35.7% | Claude Sonnet 5 leads |
| AA BriefcaseSource | 1388 | — | Not comparable |
| AA AutomationBenchSource | 39.2% | — | Not comparable |
| AA EnterpriseOps-GymSource | 44.7% | — | Not comparable |
| AA Harvey LABSource | 90.1% | — | Not comparable |
| AA Tau3 BankingSource | 28.2% | — | Not comparable |
| aaTerminalBench21Source | 80.5% | — | Not comparable |
| Gert LabsSource | — | 36.91% | Not comparable |
CodingClaude Sonnet 5 wins10 benchmarks
| Benchmark | Claude Sonnet 5 | Hy3 Preview | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 85.2% | 74.4% | Claude Sonnet 5 leads |
| SWE-bench ProSource | 63.2% | — | Not comparable |
| SWE MultilingualSource | 78.3% | — | Not comparable |
| SWE MultimodalSource | 28.1% | — | Not comparable |
| Terminal-Bench 2.0Source | 80.4% | 54.4% | Claude Sonnet 5 leads |
| FrontierCode 1.1 MainSource | 42.7% | — | Not comparable |
| cursorBench32Source | 61.5% | — | Not comparable |
| AA Coding IndexSource | 71.5% | 58.8% | Claude Sonnet 5 leads |
| AA-SciCodeSource | 53.6% | 47.6% | Claude Sonnet 5 leads |
| SciCodeSource | — | 41.2% | Not comparable |
Reasoning2 benchmarks
KnowledgeClaude Sonnet 5 wins10 benchmarks
| Benchmark | Claude Sonnet 5 | Hy3 Preview | Result |
|---|---|---|---|
| HLESource | 57.4% | 25.5% | Claude Sonnet 5 leads |
| HLE w/o toolsSource | 43.2% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 53.4% | 41.2% | Claude Sonnet 5 leads |
| AA-GPQA DiamondSource | 91.1% | 89.7% | Claude Sonnet 5 leads |
| AA-HLESource | 39.6% | 31.6% | Claude Sonnet 5 leads |
| AA-Omniscience IndexSource | 15.3% | -18.5% | Claude Sonnet 5 leads |
| AA-Omniscience AccuracySource | 38.3% | 31.5% | Claude Sonnet 5 leads |
| AA-Omniscience Hallucination RateSource | 37.3% | 73.0% | Claude Sonnet 5 leads |
| GPQASource | — | 87.2% | Not comparable |
| GPQA-DSource | — | 87.2% | Not comparable |
Multimodal4 benchmarks
Inst. Following1 benchmarks
| Benchmark | Claude Sonnet 5 | Hy3 Preview | Result |
|---|---|---|---|
| IFBenchSource | — | 63.1% | Not comparable |
Frequently Asked Questions (4)
Which is better, Claude Sonnet 5 or Hy3 Preview?
Claude Sonnet 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 knowledge tasks, Claude Sonnet 5 or Hy3 Preview?
Claude Sonnet 5 has the edge for knowledge tasks in this comparison, averaging 57.4 versus 33.8. Inside this category, AA-Omniscience Hallucination Rate is the benchmark that creates the most daylight between them.
Which is better for coding, Claude Sonnet 5 or Hy3 Preview?
Claude Sonnet 5 has the edge for coding in this comparison, averaging 76.7 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 Sonnet 5 or Hy3 Preview?
Claude Sonnet 5 has the edge for agentic tasks in this comparison, averaging 81.9 versus 54.4. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
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