Model comparison
Claude Haiku 5.5 vs Hy4 preview
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 45.3 on the Noometry Index.
Last verified . 2 shared benchmarks.
TencentSummary
- They share 2 benchmarks with published results for both. Claude Haiku 5.5 scores higher in 2 categories and Hy4 preview in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 55.7.
- Claude Haiku 5.5 is cheaper at $0.10 / $0.50 per million input/output tokens, against $0.83 / $2.50 for Hy4 preview.
- Hy4 preview accepts more context: 1.05M tokens versus 1M.
- Hy4 preview has downloadable open weights; the other is API-only.
Side by side
| Claude Haiku 5.5 | Hy4 preview | |
|---|---|---|
| Provider | Anthropic | Tencent |
| Noometry Index | 49.5 | 45.3 |
| Released | 2026-10-07 | 2026-08-28 |
| Weights | Proprietary | Open |
| Context window | 1M | 1.05M |
| Max output | 128K | 64K |
| Input $ / M tokens | $0.10 | $0.83 |
| Output $ / M tokens | $0.50 | $2.50 |
| Results tracked | 9 | 3 |
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Category by category
Coding Hy4 preview leads
Claude Haiku 5.5: 49.2 (#50), Hy4 preview: 51.6 (#38)
| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| LMArena WebDev | 1587 | 1632 |
Reasoning Claude Haiku 5.5 leads
Claude Haiku 5.5: 35.2 (#69), Hy4 preview: 31.9 (#79)
| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| NYT Connections (extended) | 65.7% | 68.2% |
| Mystery Game Puzzles | 30% | — |
Math Claude Haiku 5.5 leads
Claude Haiku 5.5: 73.6 (#18), Hy4 preview: 55.7 (#42)
| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | — |
| FrontierMath Tier 4 | 46.3% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| ProofBench | — | 75% |
Knowledge Not comparable
Claude Haiku 5.5: 50.8 (#70), Hy4 preview: —
| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| GPQA Diamond | 89.6% | — |
| SimpleQA Verified | 23.8% | — |
Multimodal Not comparable
Claude Haiku 5.5: 43.7 (#21), Hy4 preview: —
| Benchmark | Claude Haiku 5.5 | Hy4 preview |
|---|---|---|
| Furniture Assembly | 47.5% | — |
Frequently asked questions
Is Claude Haiku 5.5 better than Hy4 preview?
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 45.3 on the Noometry Index.
Which is cheaper, Claude Haiku 5.5 or Hy4 preview?
Claude Haiku 5.5 is cheaper. It lists at $0.10 per million input tokens and $0.50 per million output tokens; Hy4 preview lists at $0.83 and $2.50.
Is Claude Haiku 5.5 or Hy4 preview better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 49.2 in the Noometry coding category.
Which has the bigger context window?
Hy4 preview does, with 1.05M tokens against 1M.
How many benchmarks do Claude Haiku 5.5 and Hy4 preview share?
2 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and Hy4 preview has 3.