Model Comparison
Kimi K3 vs Hy3Which is better in 2026?
Kimi K3 significantly outperforms across most benchmarks.
Verdict: Kimi K3 vs Hy3 — which is better?
Kimi K3 (by Moonshot AI) and Hy3 (by Tencent) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
Kimi K3 outperforms in 8 benchmarks (APEX-Agents, BrowseComp, DeepSearchQA, DeepSWE, GPQA, MCP Atlas, Terminal-Bench 2.1, Toolathlon), while Hy3 is better at 0 benchmarks. Kimi K3 significantly outperforms across most benchmarks.
Choose Kimi K3 if…
- you want the strongest raw capability — it leads on 8 of 8 shared benchmarks
- you want the most recent training data — it shipped Jul 2026
Choose Hy3 if…
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
Kimi K3 outperforms in 8 benchmarks (APEX-Agents, BrowseComp, DeepSearchQA, DeepSWE, GPQA, MCP Atlas, Terminal-Bench 2.1, Toolathlon), while Hy3 is better at 0 benchmarks.
Kimi K3 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Model Size
Parameter count comparison
Kimi K3 has 2505.0B more parameters than Hy3, making it 849.2% larger.
Context Window
Maximum input and output token capacity
Only Kimi K3 specifies input context (1,048,576 tokens). Only Kimi K3 specifies output context (1,048,576 tokens).
Input Capabilities
Supported data types and modalities
Kimi K3 supports multimodal inputs, whereas Hy3 does not.
Kimi K3 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Kimi K3
Hy3
Release Timeline
When each model was launched
Kimi K3 was released on 2026-07-16, while Hy3 was released on 2026-07-06.
Kimi K3 is 0 month newer than Hy3.
Jul 16, 2026
1 days ago
1w newerJul 6, 2026
1 weeks ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Key Takeaways
Kimi K3
View detailsMoonshot AI
Hy3
View detailsTencent
No standout differentiators in the data we have for this pair.
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against Kimi K3 and Hy3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Kimi K3 vs Hy3.