Hunyuan Hy3 Preview vs Qwen3.5-Plus
Hunyuan Hy3 Preview (2026) and Qwen3.5-Plus (2026) are frontier reasoning models from Tencent AI Lab and Alibaba. Hunyuan Hy3 Preview ships a 262k-token context window, while Qwen3.5-Plus ships a 1m-token context window. On SWE-bench Verified, Qwen3.5-Plus leads by 2 pts. 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 safer overall; choose Qwen3.5-Plus when long-context analysis matters.
Decision scorecard
Local evidence first| Signal | Hunyuan Hy3 Preview | Qwen3.5-Plus |
|---|---|---|
| Best for | reasoning-heavy apps, tool-calling agents, and provider-routed production | multimodal apps, long-context analysis, and provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding, Agents, and Long context |
| Context window | 262k | 1m |
| Cheapest output | $0.26/1M tokens | $1.80/1M tokens |
| Provider routes | 2 tracked | 3 tracked |
| Shared benchmarks | 2 shared | SWE-bench Verified leader |
Decision tradeoffs
- Hunyuan Hy3 Preview has the lower cheapest tracked output price at $0.26/1M tokens.
- Hunyuan Hy3 Preview uniquely exposes Reasoning, Function calling, and Tool use in local model data.
- Local decision data tags Hunyuan Hy3 Preview for Coding, RAG, and Agents.
- Qwen3.5-Plus holds a shared-benchmark lead on SWE-bench Verified, ahead by 2 points.
- Qwen3.5-Plus has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Qwen3.5-Plus has broader tracked provider coverage for fallback and procurement flexibility.
- Qwen3.5-Plus uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Qwen3.5-Plus for Coding, Agents, and Long context.
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
Qwen3.5-Plus
$690
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $572. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Qwen3.5-Plus is $1.54/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Reasoning, Function calling, and Tool use before moving production traffic.
- Qwen3.5-Plus adds Vision and Multimodal in local capability data.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Hunyuan Hy3 Preview is $1.54/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
- Hunyuan Hy3 Preview adds Reasoning, Function calling, and Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-22 | 2026-02-15 |
| Context window | 262k | 1m |
| Parameters | 295B | — |
| Architecture | Dense + MoE Hybrid | - |
| License | Tencent Hunyuan Community License | Apache 2.0OSI-approved |
| Openness | Open weights | Open source |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Hunyuan Hy3 Preview | Qwen3.5-Plus |
|---|---|---|
| Input price | $0.07/1M tokens |
|
| Output price | $0.26/1M tokens |
|
| Providers |
Capabilities
| Capability | Hunyuan Hy3 Preview | Qwen3.5-Plus |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | Yes | No |
| Function calling | Yes | No |
| Tool use | Yes | No |
| Structured outputs | No | No |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | Hunyuan Hy3 Preview | Qwen3.5-Plus |
|---|---|---|
| SWE-bench Verified | 74.4 | 76.4 |
| Google-Proof Q&A | 87.2 | 88.4 |
Deep dive
On shared benchmark coverage, SWE-bench Verified has Hunyuan Hy3 Preview at 74.4 and Qwen3.5-Plus at 76.4, with Qwen3.5-Plus ahead by 2 points; Google-Proof Q&A has Hunyuan Hy3 Preview at 87.2 and Qwen3.5-Plus at 88.4, with Qwen3.5-Plus ahead by 1.2 points. The largest visible gap is 2 points on SWE-bench Verified, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint differs most on vision: Qwen3.5-Plus, multimodal input: Qwen3.5-Plus, reasoning mode: Hunyuan Hy3 Preview, function calling: Hunyuan Hy3 Preview, and tool use: Hunyuan Hy3 Preview. Both models share the core language-model surface, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
For cost, Hunyuan Hy3 Preview lists $0.07/1M input and $0.26/1M output tokens on the cheapest tracked provider, while Qwen3.5-Plus lists tiered pricing: 0-256,001t is $0.40/1M input and $2.40/1M output; 256,001t+ is $1.20/1M input and $7.20/1M output. A 70/30 input-output blend puts Hunyuan Hy3 Preview lower by about $0.63 per million blended tokens. For tiered rows, this cheapest-track view can understate interactive or fast-lane spend, so compare the tier you will actually use. Availability is 2 providers versus 3, so concentration risk also matters.
Choose Hunyuan Hy3 Preview when reasoning depth and lower input-token cost are central to the workload. Choose Qwen3.5-Plus when long-context analysis, larger context windows, and broader provider choice are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Which has a larger context window, Hunyuan Hy3 Preview or Qwen3.5-Plus?
Qwen3.5-Plus supports 1m tokens, while Hunyuan Hy3 Preview supports 262k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Hunyuan Hy3 Preview or Qwen3.5-Plus?
Hunyuan Hy3 Preview lists $0.07/1M input and $0.26/1M output tokens on the cheapest tracked provider. Qwen3.5-Plus lists tiered pricing: 0-256,001t is $0.40/1M input and $2.40/1M output; 256,001t+ is $1.20/1M input and $7.20/1M output. Compare the tier you will actually use; cheap async pricing can overstate savings for interactive workflows. Provider discounts or batch pricing can still change the final bill.
Is Hunyuan Hy3 Preview or Qwen3.5-Plus open source?
Hunyuan Hy3 Preview is listed under Tencent Hunyuan Community License. Qwen3.5-Plus is listed under Apache 2.0. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, Hunyuan Hy3 Preview or Qwen3.5-Plus?
Qwen3.5-Plus has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, Hunyuan Hy3 Preview or Qwen3.5-Plus?
Qwen3.5-Plus has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Hunyuan Hy3 Preview and Qwen3.5-Plus?
Hunyuan Hy3 Preview is available on OpenRouter and Tencent Cloud TI Platform. Qwen3.5-Plus is available on Alibaba Cloud PAI-EAS, OpenRouter, and Vercel AI Gateway. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-06-15. Data sourced from public model cards and provider documentation.