Hunyuan Hy4 vs Kimi K3.1 Pro
Official Tencent Hunyuan and Kimi API prices and LMArena scores, checked 2026-11-14. Add up to 2 more models to compare 4.
Hunyuan Hy4 is cheaper and wins more LMArena tasks.
Hunyuan Hy4 is 2.4x cheaper on input and 4x cheaper on output. Hunyuan Hy4 scores 1 point higher for agent tasks. Across 1 shared LMArena task, Hunyuan Hy4 leads 1 to 0. A medium month (20M input + 5M output tokens) costs $29.19 on Hunyuan Hy4 and $90 on Kimi K3.1 Pro.
- Pick Hunyuan Hy4 if you want the lower bill ($29.19 vs $90 for a medium month) or you reuse long prompts (cached input $0.042 vs $0.20).
- Pick Kimi K3.1 Pro if nothing here clearly favors it (no lower bill, bigger context, cheaper cache or LMArena lead of 3+ points over Hunyuan Hy4).
Medium: 20M input + 5M output tokens a month at list price (short-context rate, no caching or batch discounts).
Marked side is better: lower for prices, higher for context and scores. Bars are scaled to the larger of the two.
| Spec | Hunyuan Hy4 | Kimi K3.1 Pro |
|---|---|---|
| Price per 1M tokens | ||
| Input | $0.834 | $2 |
| Cached input | $0.042 | $0.20 |
| Output | $2.50 | $10 |
| Blend 3:1 | $1.25 | $4 |
| Sample month, medium | $29.19 | $90 |
| Context | ||
| Context window | 1M tokens | 1.04858M tokens |
| Quality (LMArena, out of 100) | ||
| Coding | Not ranked | 47/100 #10 of 53 |
| Chat | Not ranked | 25/100 #13 of 54 |
| Creative writing | Not ranked | 9/100 #16 of 54 |
| Roleplay and characters | Not ranked | 0/100 #22 of 54 |
| Reasoning and math | Not ranked | Not ranked |
| Vision | Not ranked | Not ranked |
| Long documents | Not ranked | Not ranked |
| Cheap bulk and agents | 35/100 #12 of 40 | 34/100 #13 of 40 |
| Details | ||
| Provider | Tencent Hunyuan | Kimi |
| API model id | hy4 | kimi-k3.1-pro |
| Notes | Singapore region list price. Tencent bills Hy4 at 50% of list ($0.417 in, $1.251 out) through Dec 31, 2026 (Beijing time). | Flat price across the 1M window. Cache writes cost $2 (5-minute) or $4 (1-hour). |
| Sources | ||
| Last checked | 2026-11-14 | 2026-11-14 |
| Official pricing | Tencent Hunyuan pricing | Kimi pricing |
Plans from data checked hourly against each vendor's official pricing page. Vendors state limits in different units, so we quote them as published. Team and enterprise plans are per seat.
API prices in USD per 1M tokens from each provider's official pricing page. Blend 3:1 = (3 x input + output) / 4. Sample month = stated input and output tokens at the list price, no caching. Quality: relative score out of 100 on each LMArena leaderboard (100 = top model we price on that board, n/a = not ranked there), data licensed CC BY 4.0. See how we pick.
Where each one ranks on LMArena
Relative score out of 100 on each leaderboard (100 = the top model we price there), with the rank among the models from our API price table that appear on that board.
- Coding (Code Arena): Hunyuan Hy4 not ranked, Kimi K3.1 Pro #10 of 53 (47/100)
- Chat (Text Arena): Hunyuan Hy4 not ranked, Kimi K3.1 Pro #13 of 54 (25/100)
- Creative writing (Text Arena creative writing): Hunyuan Hy4 not ranked, Kimi K3.1 Pro #16 of 54 (9/100)
- Roleplay and characters (Text Arena multi-turn): Hunyuan Hy4 not ranked, Kimi K3.1 Pro #22 of 54 (0/100)
- Reasoning and math (Text Arena math): Hunyuan Hy4 not ranked, Kimi K3.1 Pro not ranked
- Vision (Vision Arena): Hunyuan Hy4 not ranked, Kimi K3.1 Pro not ranked
- Long documents (Document Arena): Hunyuan Hy4 not ranked, Kimi K3.1 Pro not ranked
- Cheap bulk and agents (Agent Arena): Hunyuan Hy4 #12 of 40 (35/100), Kimi K3.1 Pro #13 of 40 (34/100)
Pricing details from the official pages
Hunyuan Hy4 lists $0.834 input, $2.50 output, $0.042 cached input per 1M tokens on Tencent Hunyuan pricing. Kimi K3.1 Pro lists $2 input, $10 output, $0.20 cached input per 1M tokens on Kimi pricing. Prices checked 2026-11-14.
- Hunyuan Hy4: Singapore region list price. Tencent bills Hy4 at 50% of list ($0.417 in, $1.251 out) through Dec 31, 2026 (Beijing time).
- Kimi K3.1 Pro: Flat price across the 1M window. Cache writes cost $2 (5-minute) or $4 (1-hour).
Sample monthly bill at list price, no caching: Light (2M input + 0.5M output tokens): $2.92 vs $9. Medium (20M input + 5M output tokens): $29.19 vs $90. Heavy (200M input + 50M output tokens): $291.85 vs $900.
FAQ
Is Hunyuan Hy4 cheaper than Kimi K3.1 Pro?
Hunyuan Hy4 costs $0.834 input and $2.50 output per 1M tokens; Kimi K3.1 Pro costs $2 and $10. For a medium month (20M input + 5M output tokens) Hunyuan Hy4 is cheaper: $29.19 vs $90.
Which is better for coding, Hunyuan Hy4 or Kimi K3.1 Pro?
Code Arena score: Hunyuan Hy4 n/a (not ranked), Kimi K3.1 Pro 47/100. We do not guess missing scores.
Which has the bigger context window?
Hunyuan Hy4: 1M tokens. Kimi K3.1 Pro: 1.04858M tokens.
How much do Hunyuan Hy4 and Kimi K3.1 Pro cost per month?
Light (2M input + 0.5M output tokens): $2.92 vs $9. Medium (20M input + 5M output tokens): $29.19 vs $90. Heavy (200M input + 50M output tokens): $291.85 vs $900. Pick your own token counts in the plan vs API calculator.
Where do these numbers come from?
Prices come from each provider's official pricing page, checked daily. Quality is the relative score on the LMArena leaderboard dataset, licensed CC BY 4.0. Where a model is not ranked we show n/a.