Grok 4.20 vs Qwen3.6-Plus
Grok 4.20 (2026) and Qwen3.6-Plus (2026) are agentic coding models from xAI and Alibaba. Grok 4.20 ships a 2M-token context window, while Qwen3.6-Plus ships a 1M-token context window. On SWE-bench Verified, Qwen3.6-Plus leads by 2.1 pts. On pricing, Qwen3.6-Plus costs $0.33/1M input tokens versus $1.25/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Qwen3.6-Plus is ~285% cheaper at $0.33/1M; pay for Grok 4.20 only for reasoning depth.
Decision scorecard
Local evidence first| Signal | Grok 4.20 | Qwen3.6-Plus |
|---|---|---|
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 2M | 1M |
| Cheapest output | $2.5/1M tokens | $1.95/1M tokens |
| Provider routes | 2 tracked | 2 tracked |
| Shared benchmarks | 1 rows | SWE-bench Verified leader |
Decision tradeoffs
- Grok 4.20 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Grok 4.20 uniquely exposes Reasoning and Structured outputs in local model data.
- Local decision data tags Grok 4.20 for Coding, RAG, and Agents.
- Qwen3.6-Plus leads the largest shared benchmark signal on SWE-bench Verified by 2.1 points.
- Qwen3.6-Plus has the lower cheapest tracked output price at $1.95/1M tokens.
- Qwen3.6-Plus uniquely exposes Vision and Multimodal 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.
Grok 4.20
$1,625
Cheapest tracked route: xAI Console
Qwen3.6-Plus
$748
Cheapest tracked route: Alibaba Cloud PAI-EAS
Estimated monthly gap: $878. Batch, cache, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Qwen3.6-Plus is $0.55/1M 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 and Multimodal in local capability data.
- Provider overlap exists on OpenRouter; start route-level A/B tests there.
- Grok 4.20 is $0.55/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
- Grok 4.20 adds Reasoning and Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-01-01 | 2026-04-01 |
| Context window | 2M | 1M |
| Parameters | — | — |
| Architecture | - | dense |
| License | Proprietary | Proprietary |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Grok 4.20 | Qwen3.6-Plus |
|---|---|---|
| Input price | $1.25/1M tokens | $0.33/1M tokens |
| Output price | $2.5/1M tokens | $1.95/1M tokens |
| Providers |
Capabilities
| Capability | Grok 4.20 | Qwen3.6-Plus |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | Yes | No |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | Yes | No |
| Code execution | No | No |
Benchmarks
| Benchmark | Grok 4.20 | Qwen3.6-Plus |
|---|---|---|
| SWE-bench Verified | 76.7 | 78.8 |
Deep dive
On shared benchmark coverage, SWE-bench Verified has Grok 4.20 at 76.7 and Qwen3.6-Plus at 78.8, with Qwen3.6-Plus ahead by 2.1 points. The largest visible gap is 2.1 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, multimodal input: Qwen3.6-Plus, reasoning mode: Grok 4.20, and structured outputs: Grok 4.20. Both models share 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, Grok 4.20 lists $1.25/1M input and $2.5/1M 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 $0.81 per million blended tokens. Availability is 2 providers versus 2, so concentration risk also matters.
Choose Grok 4.20 when reasoning depth and larger context windows are central to the workload. Choose Qwen3.6-Plus when coding workflow support 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, Grok 4.20 or Qwen3.6-Plus?
Grok 4.20 supports 2M tokens, while Qwen3.6-Plus supports 1M 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, Grok 4.20 or Qwen3.6-Plus?
Qwen3.6-Plus is cheaper on tracked token pricing. Grok 4.20 costs $1.25/1M input and $2.5/1M 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 Grok 4.20 or Qwen3.6-Plus open source?
Grok 4.20 is listed under Proprietary. 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, Grok 4.20 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, Grok 4.20 or Qwen3.6-Plus?
Qwen3.6-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 Grok 4.20 and Qwen3.6-Plus?
Grok 4.20 is available on xAI Console and OpenRouter. 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: 2026-05-14. Data sourced from public model cards and provider documentation.