Hy4 preview vs Kimi K3: Specs & Benchmark Comparison
Hy4 preview is developed by Tencent, while Kimi K3 comes from Moonshot AI. Kimi K3 was released in July 2026, and Hy4 preview followed a month later in August 2026. Kimi K3 is the larger model at roughly 2.8 trillion parameters, against 770 billion for Hy4 preview.
We have 32 benchmark results for Hy4 preview and 3 benchmark results for Kimi K3, but they overlap on a single test: GPQA, where Kimi K3 scores 94.0% against 92.3%.
Kimi K3 is available through an API at $3 per million input tokens with a 1M-token context window. We do not track a hosted API for Hy4 preview, so pricing and context cannot be compared directly.
| Characteristic | Hy4 preview | Kimi K3 |
|---|---|---|
| Company | Tencent | Moonshot AI |
| Release Date | August 28, 2026 | July 16, 2026 |
| Parameters | 770B | 2.8T |
| Multimodal | No | Yes |
| Context (input) | — | 1.0M |
| Context (output) | — | 1.0M |
| Input Price / 1M | — | $3.00 |
| Output Price / 1M | — | $15.00 |
| Average Score | 58.7% | 95.7% |
| Benchmarks | ||
| GPQA | 92.3% | 94.0% |
Visual Benchmark Comparison
Verdict
Hy4 preview leads in 1 out of 2 comparison categories.
Both models show comparable average scores: Hy4 preview — 0.6, Kimi K3 — 1.0.
Hy4 preview is newer: released 8/28/2026 vs 7/16/2026.
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Frequently Asked Questions
Which is better for coding — Hy4 preview or Kimi K3?
Which model is cheaper — Hy4 preview or Kimi K3?
Which has a larger context window — Hy4 preview or Kimi K3?
The Hy4 preview and Kimi K3 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Hy4 preview or Kimi K3 page. See also the complete list of AI model comparisons.