Model comparison
Claude Opus 4.1 vs Hy4 preview
Hy4 preview is the stronger model overall, scoring 45.3 to 41.0 on the Noometry Index.
Last verified . 1 shared benchmarks.
TencentSummary
- They share 1 benchmark with published results for both. Claude Opus 4.1 scores higher in 1 category and Hy4 preview in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in math, where Hy4 preview leads 55.7 to 22.3.
- Hy4 preview is cheaper at $0.83 / $2.50 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
- Hy4 preview accepts more context: 1.05M tokens versus 200K.
- Hy4 preview has downloadable open weights; the other is API-only.
Side by side
| Claude Opus 4.1 | Hy4 preview | |
|---|---|---|
| Provider | Anthropic | Tencent |
| Noometry Index | 41.0 | 45.3 |
| Released | 2025-08-05 | 2026-08-28 |
| Weights | Proprietary | Open |
| Context window | 200K | 1.05M |
| Max output | 32K | 64K |
| Input $ / M tokens | $15 | $0.83 |
| Output $ / M tokens | $75 | $2.50 |
| Results tracked | 48 | 3 |
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Category by category
Coding Hy4 preview leads
Claude Opus 4.1: 44.4 (#73), Hy4 preview: 51.6 (#38)
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| LMArena WebDev | 1390 | 1632 |
| SWE-bench Verified | 73.3% | — |
| WeirdML | 45.9% | — |
| LMArena Coding | 1479 | — |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |
Agentic & Tool Use Not comparable
Claude Opus 4.1: 35.0 (#41), Hy4 preview: —
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| Terminal-Bench | 38% | — |
| GDPval | 43.6% | — |
| Cybench | 42% | — |
| DeepResearch Bench | 48.3% | — |
| LMArena Search | 1148 | — |
| METR Time Horizons | 66.8% | — |
Reasoning Too close to call
Claude Opus 4.1: 32.2 (#76), Hy4 preview: 31.9 (#79)
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| SimpleBench | 60% | — |
| NYT Connections (extended) | — | 68.2% |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| LMArena Hard Prompts | 1443 | — |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LMCA | 37.1% | — |
| Epoch Capabilities Index | 144.12 | — |
| ForecastBench | 62 | — |
Math Hy4 preview leads
Claude Opus 4.1: 22.3 (#277), Hy4 preview: 55.7 (#42)
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.9% | — |
| ProofBench | — | 75% |
| LMArena Math | 1431 | — |
| FrontierMath (Feb 2025 set) | 7.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Not comparable
Claude Opus 4.1: 42.0 (#101), Hy4 preview: —
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| GPQA Diamond | 77.3% | — |
| Humanity's Last Exam | 11.5% | — |
| Confabulations | 17.1% | — |
| Vectara Hallucination Rate | 11.8% | — |
| LMArena Expert | 1439 | — |
Multimodal Not comparable
Claude Opus 4.1: 26.8 (#119), Hy4 preview: —
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| VPCT | 35% | — |
Multilingual Not comparable
Claude Opus 4.1: 52.0 (#95), Hy4 preview: —
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| LMArena Non-English | 1405 | — |
| LMArena Chinese | 1427 | — |
| LMArena French | 1431 | — |
| LMArena German | 1413 | — |
| LMArena Japanese | 1378 | — |
| LMArena Korean | 1380 | — |
| LMArena Russian | 1422 | — |
| LMArena Spanish | 1448 | — |
Instruction Following Not comparable
Claude Opus 4.1: 75.6 (#58), Hy4 preview: —
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| LMArena Instruction Following | 1435 | — |
Long Context Not comparable
Claude Opus 4.1: 44.5 (#63), Hy4 preview: —
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| LMArena Longer Query | 1455 | — |
Writing & Preference Not comparable
Claude Opus 4.1: 62.4 (#74), Hy4 preview: —
| Benchmark | Claude Opus 4.1 | Hy4 preview |
|---|---|---|
| LMArena Text | 1419 | — |
| LMArena Creative Writing | 1412 | — |
| Short-Story Creative Writing | 84.7% | — |
| LMArena Multi-Turn | 1444 | — |
Frequently asked questions
Is Claude Opus 4.1 better than Hy4 preview?
Hy4 preview is the stronger model overall, scoring 45.3 to 41.0 on the Noometry Index.
Which is cheaper, Claude Opus 4.1 or Hy4 preview?
Hy4 preview is cheaper. It lists at $0.83 per million input tokens and $2.50 per million output tokens; Claude Opus 4.1 lists at $15 and $75.
Is Claude Opus 4.1 or Hy4 preview better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 44.4 in the Noometry coding category.
Which has the bigger context window?
Hy4 preview does, with 1.05M tokens against 200K.
How many benchmarks do Claude Opus 4.1 and Hy4 preview share?
1 benchmark has published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Hy4 preview has 3.