Hunyuan Hy3 Preview vs Kimi K2 Instruct
Hunyuan Hy3 Preview (2026) and Kimi K2 Instruct (2025) are frontier-tier reasoning models from Tencent AI Lab and Moonshot AI. Hunyuan Hy3 Preview ships a 262k-token context window, while Kimi K2 Instruct ships a 131k-token context window. On pricing, Hunyuan Hy3 Preview costs $0.07/1M input tokens versus $0.57/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Hunyuan Hy3 Preview is ~764% cheaper at $0.07/1M; pay for Kimi K2 Instruct only for provider fit.
Decision scorecard
Local evidence first| Signal | Hunyuan Hy3 Preview | Kimi K2 Instruct |
|---|---|---|
| Best for | reasoning-heavy apps, tool-calling agents, and provider-routed production | reasoning-heavy apps and provider-routed production |
| Decision fit | Coding, RAG, and Agents | RAG, Long context, and Classification |
| Context window | 262k | 131k |
| Cheapest output | $0.26/1M tokens | $2.30/1M tokens |
| Provider routes | 2 tracked | 5 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Hunyuan Hy3 Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Hunyuan Hy3 Preview has the lower cheapest tracked output price at $0.26/1M tokens.
- Hunyuan Hy3 Preview uniquely exposes JSON / Tool use in local model data.
- Local decision data tags Hunyuan Hy3 Preview for Coding, RAG, and Agents.
- Kimi K2 Instruct has broader tracked provider coverage for fallback and route flexibility.
- Kimi K2 Instruct uniquely exposes Structured outputs in local model data.
- Local decision data tags Kimi K2 Instruct for RAG, Long context, and Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Hunyuan Hy3 Preview
$118
Cheapest tracked route/tier: OpenRouter
Kimi K2 Instruct
$1,031
Cheapest tracked route/tier: Vercel AI Gateway
Estimated monthly gap: $913. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Hunyuan Hy3 Preview and Kimi K2 Instruct; plan for SDK, billing, or endpoint changes.
- Kimi K2 Instruct is $2.04/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for JSON / Tool use before moving production traffic.
- Kimi K2 Instruct adds Structured outputs in local capability data.
- No overlapping tracked provider route is sourced for Kimi K2 Instruct and Hunyuan Hy3 Preview; plan for SDK, billing, or endpoint changes.
- Hunyuan Hy3 Preview is $2.04/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Structured outputs before moving production traffic.
- Hunyuan Hy3 Preview adds JSON / Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-22 | 2025-09-05 |
| Context window | 262k | 131k |
| Parameters | 295B | 1T total, 32B active (MoE) |
| Architecture | Dense + MoE Hybrid | Decoder Only |
| License | Tencent Hunyuan Community License | MITOSI-approved |
| Openness | Open weights | Open source |
| Weights | Available | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Hunyuan Hy3 Preview | Kimi K2 Instruct |
|---|---|---|
| Input price | $0.07/1M tokens | $0.57/1M tokens |
| Output price | $0.26/1M tokens | $2.30/1M tokens |
| Providers |
Capabilities
| Capability | Hunyuan Hy3 Preview | Kimi K2 Instruct |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | Yes |
| JSON / Tool use | Yes | No |
| Structured outputs | No | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.