Qwen3.5-397B-A17B vs Qwen3.6-Plus
Qwen3.5-397B-A17B (2026) and Qwen3.6-Plus (2026) are agentic coding models from Alibaba. Qwen3.5-397B-A17B ships a 262K-token context window, while Qwen3.6-Plus ships a 1M-token context window. On SWE-bench Verified, Qwen3.6-Plus leads by 2.6 pts. On pricing, Qwen3.6-Plus costs $0.33/1M input tokens versus $0.39/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
Qwen3.6-Plus is safer overall; choose Qwen3.5-397B-A17B when reasoning depth matters.
Decision scorecard
Local evidence first| Signal | Qwen3.5-397B-A17B | Qwen3.6-Plus |
|---|---|---|
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 262K | 1M |
| Cheapest output | $2.34/1M tokens | $1.95/1M tokens |
| Provider routes | 3 tracked | 2 tracked |
| Shared benchmarks | 2 rows | SWE-bench Verified leader |
Decision tradeoffs
- Qwen3.5-397B-A17B has broader tracked provider coverage for fallback and procurement flexibility.
- Qwen3.5-397B-A17B uniquely exposes Reasoning and Structured outputs in local model data.
- Local decision data tags Qwen3.5-397B-A17B for Coding, RAG, and Agents.
- Qwen3.6-Plus leads the largest shared benchmark signal on SWE-bench Verified by 2.6 points.
- Qwen3.6-Plus has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Qwen3.6-Plus has the lower cheapest tracked output price at $1.95/1M tokens.
- Qwen3.6-Plus uniquely exposes Vision in local model data.
- Local decision data tags Qwen3.6-Plus for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output prices on this page.
Qwen3.5-397B-A17B
$897
Cheapest tracked route: OpenRouter
Qwen3.6-Plus
$748
Cheapest tracked route: Alibaba Cloud PAI-EAS
Estimated monthly gap: $150. Batch, cache, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter and Alibaba Cloud PAI-EAS; start route-level A/B tests there.
- Qwen3.6-Plus is $0.39/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning and Structured outputs before moving production traffic.
- Qwen3.6-Plus adds Vision in local capability data.
- Provider overlap exists on OpenRouter and Alibaba Cloud PAI-EAS; start route-level A/B tests there.
- Qwen3.5-397B-A17B is $0.39/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Vision before moving production traffic.
- Qwen3.5-397B-A17B adds Reasoning and Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-02-16 | 2026-04-01 |
| Context window | 262K | 1M |
| Parameters | 397B | — |
| Architecture | MoE | dense |
| License | Apache 2.0 | Proprietary |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Qwen3.5-397B-A17B | Qwen3.6-Plus |
|---|---|---|
| Input price | $0.39/1M tokens | $0.33/1M tokens |
| Output price | $2.34/1M tokens | $1.95/1M tokens |
| Providers |
Capabilities
| Capability | Qwen3.5-397B-A17B | Qwen3.6-Plus |
|---|---|---|
| Vision | No | Yes |
| Multimodal | Yes | Yes |
| Reasoning | Yes | No |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | Yes | No |
| Code execution | No | No |
Benchmarks
| Benchmark | Qwen3.5-397B-A17B | Qwen3.6-Plus |
|---|---|---|
| SWE-bench Verified | 76.2 | 78.8 |
| Massive Multi-discipline Multimodal Understanding | 85.0 | 86.0 |
Deep dive
On shared benchmark coverage, SWE-bench Verified has Qwen3.5-397B-A17B at 76.2 and Qwen3.6-Plus at 78.8, with Qwen3.6-Plus ahead by 2.6 points; Massive Multi-discipline Multimodal Understanding has Qwen3.5-397B-A17B at 85 and Qwen3.6-Plus at 86, with Qwen3.6-Plus ahead by 1 points. The largest visible gap is 2.6 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: Qwen3.6-Plus, reasoning mode: Qwen3.5-397B-A17B, and structured outputs: Qwen3.5-397B-A17B. Both models share multimodal input, function calling, and tool use, 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, Qwen3.5-397B-A17B lists $0.39/1M input and $2.34/1M output tokens, while Qwen3.6-Plus lists $0.33/1M input and $1.95/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Qwen3.6-Plus lower by about $0.16 per million blended tokens. Availability is 3 providers versus 2, so concentration risk also matters.
Choose Qwen3.5-397B-A17B when reasoning depth and broader provider choice are central to the workload. Choose Qwen3.6-Plus when coding workflow support, larger context windows, and lower input-token cost 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, Qwen3.5-397B-A17B or Qwen3.6-Plus?
Qwen3.6-Plus supports 1M tokens, while Qwen3.5-397B-A17B supports 262K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is cheaper, Qwen3.5-397B-A17B or Qwen3.6-Plus?
Qwen3.6-Plus is cheaper on tracked token pricing. Qwen3.5-397B-A17B costs $0.39/1M input and $2.34/1M output tokens. Qwen3.6-Plus costs $0.33/1M input and $1.95/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Qwen3.5-397B-A17B or Qwen3.6-Plus open source?
Qwen3.5-397B-A17B is listed under Apache 2.0. Qwen3.6-Plus is listed under Proprietary. 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, Qwen3.5-397B-A17B or Qwen3.6-Plus?
Qwen3.6-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, Qwen3.5-397B-A17B or Qwen3.6-Plus?
Both Qwen3.5-397B-A17B and Qwen3.6-Plus expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Where can I run Qwen3.5-397B-A17B and Qwen3.6-Plus?
Qwen3.5-397B-A17B is available on OpenRouter, Together AI, and Alibaba Cloud PAI-EAS. Qwen3.6-Plus is available on OpenRouter and Alibaba Cloud PAI-EAS. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-05-12. Data sourced from public model cards and provider documentation.