Model comparison
Grok Build 0.1 vs Hy4 preview
Hy4 preview is the stronger model overall, scoring 45.3 to 36.4 on the Noometry Index.
Last verified . 0 shared benchmarks.
TencentSummary
- The widest gap is in coding, where Hy4 preview leads 51.6 to 43.1.
- Hy4 preview is cheaper at $0.75 / $2.25 per million input/output tokens, against $1 / $2 for Grok Build 0.1.
- Hy4 preview accepts more context: 1.05M tokens versus 256K.
- Hy4 preview has downloadable open weights; the other is API-only.
Side by side
| Grok Build 0.1 | Hy4 preview | |
|---|---|---|
| Provider | xAI | Tencent |
| Noometry Index | 36.4 | 45.3 |
| Released | 2026-04-16 | 2026-08-28 |
| Weights | Proprietary | Open |
| Context window | 256K | 1.05M |
| Max output | 256K | 64K |
| Input $ / M tokens | $1 | $0.75 |
| Output $ / M tokens | $2 | $2.25 |
| Results tracked | 3 | 3 |
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Category by category
Coding Hy4 preview leads
Grok Build 0.1: 43.1 (#91), Hy4 preview: 51.6 (#38)
| Benchmark | Grok Build 0.1 | Hy4 preview |
|---|---|---|
| LMArena WebDev | — | 1632 |
| SciCode | 50.2% | — |
Agentic & Tool Use Not comparable
Grok Build 0.1: 22.7 (#129), Hy4 preview: —
| Benchmark | Grok Build 0.1 | Hy4 preview |
|---|---|---|
| GBAEval | 2.4% | — |
Reasoning Too close to call
Grok Build 0.1: 32.2 (#77), Hy4 preview: 31.9 (#79)
| Benchmark | Grok Build 0.1 | Hy4 preview |
|---|---|---|
| NYT Connections (extended) | — | 68.2% |
| CritPt | 9.1% | — |
Math Not comparable
Grok Build 0.1: —, Hy4 preview: 55.7 (#42)
| Benchmark | Grok Build 0.1 | Hy4 preview |
|---|---|---|
| ProofBench | — | 75% |
Frequently asked questions
Is Grok Build 0.1 better than Hy4 preview?
Hy4 preview is the stronger model overall, scoring 45.3 to 36.4 on the Noometry Index.
Which is cheaper, Grok Build 0.1 or Hy4 preview?
Hy4 preview is cheaper. It lists at $0.75 per million input tokens and $2.25 per million output tokens; Grok Build 0.1 lists at $1 and $2.
Is Grok Build 0.1 or Hy4 preview better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 43.1 in the Noometry coding category.
Which has the bigger context window?
Hy4 preview does, with 1.05M tokens against 256K.
How many benchmarks do Grok Build 0.1 and Hy4 preview share?
0 benchmarks have published results for both models. Grok Build 0.1 has 3 scored results on Noometry and Hy4 preview has 3.