Llama 3.1 405B Instruct vs Qwen3.6 Max Preview
Llama 3.1 405B Instruct (2024) and Qwen3.6 Max Preview (2026) are frontier reasoning models from AI at Meta and Alibaba. Llama 3.1 405B Instruct ships a 128K-token context window, while Qwen3.6 Max Preview ships a 256K-token context window. On pricing, Llama 3.1 405B Instruct costs $2.40/1M input tokens; Qwen3.6 Max Preview ranges from $1.30 to $2/1M input tokens by tier. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Qwen3.6 Max Preview is safer overall; choose Llama 3.1 405B Instruct when provider fit matters.
Decision scorecard
Local evidence first| Signal | Llama 3.1 405B Instruct | Qwen3.6 Max Preview |
|---|---|---|
| Best for | provider-routed production | reasoning-heavy apps, multimodal apps, and tool-calling agents |
| Decision fit | RAG, Long context, and Classification | RAG, Agents, and Long context |
| Context window | 128K | 256K |
| Cheapest output | $2.40/1M tokens | $6.24/1M tokens |
| Provider routes | 11 tracked | 3 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Llama 3.1 405B Instruct has the lower cheapest tracked output price at $2.40/1M tokens.
- Llama 3.1 405B Instruct has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags Llama 3.1 405B Instruct for RAG, Long context, and Classification.
- Qwen3.6 Max Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Qwen3.6 Max Preview uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags Qwen3.6 Max Preview for RAG, Agents, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Llama 3.1 405B Instruct
$2,520
Cheapest tracked route/tier: AWS Bedrock
Qwen3.6 Max Preview
$2,392
Cheapest tracked route/tier: OpenRouter
Estimated monthly gap: $128. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Llama 3.1 405B Instruct and Qwen3.6 Max Preview; plan for SDK, billing, or endpoint changes.
- Qwen3.6 Max Preview is $3.84/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Qwen3.6 Max Preview adds Vision, Multimodal, and Reasoning in local capability data.
- No overlapping tracked provider route is sourced for Qwen3.6 Max Preview and Llama 3.1 405B Instruct; plan for SDK, billing, or endpoint changes.
- Llama 3.1 405B Instruct is $3.84/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-07-23 | 2026-04-20 |
| Context window | 128K | 256K |
| Parameters | 405B | — |
| Architecture | decoder only | moe |
| License | Open Source | Proprietary |
| Knowledge cutoff | 2023-12 | - |
Pricing and availability
| Pricing attribute | Llama 3.1 405B Instruct | Qwen3.6 Max Preview |
|---|---|---|
| Input price | $2.40/1M tokens |
|
| Output price | $2.40/1M tokens |
|
| Providers |
Capabilities
| Capability | Llama 3.1 405B Instruct | Qwen3.6 Max Preview |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | Yes |
| Function calling | No | Yes |
| Tool use | No | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Qwen3.6 Max Preview, multimodal input: Qwen3.6 Max Preview, reasoning mode: Qwen3.6 Max Preview, function calling: Qwen3.6 Max Preview, and tool use: Qwen3.6 Max Preview. Both models share structured outputs, 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, Llama 3.1 405B Instruct lists $2.40/1M input and $2.40/1M output tokens on the cheapest tracked provider, while Qwen3.6 Max Preview lists tiered pricing: 0-128,000t is $1.30/1M input and $7.80/1M output; 128,000t+ is $2/1M input and $12/1M output. A 70/30 input-output blend puts Llama 3.1 405B Instruct lower by about $0.20 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 11 providers versus 3, so concentration risk also matters.
Choose Llama 3.1 405B Instruct when provider fit and broader provider choice are central to the workload. Choose Qwen3.6 Max Preview when reasoning depth, larger context windows, and lower cheapest-tier 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, Llama 3.1 405B Instruct or Qwen3.6 Max Preview?
Qwen3.6 Max Preview supports 256K tokens, while Llama 3.1 405B Instruct supports 128K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Llama 3.1 405B Instruct or Qwen3.6 Max Preview?
Llama 3.1 405B Instruct lists $2.40/1M input and $2.40/1M output tokens on the cheapest tracked provider. Qwen3.6 Max Preview lists tiered pricing: 0-128,000t is $1.30/1M input and $7.80/1M output; 128,000t+ is $2/1M input and $12/1M 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 Llama 3.1 405B Instruct or Qwen3.6 Max Preview open source?
Llama 3.1 405B Instruct is listed under Open Source. Qwen3.6 Max Preview 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, Llama 3.1 405B Instruct or Qwen3.6 Max Preview?
Qwen3.6 Max Preview 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.
Which is better for multimodal input, Llama 3.1 405B Instruct or Qwen3.6 Max Preview?
Qwen3.6 Max Preview 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 Llama 3.1 405B Instruct and Qwen3.6 Max Preview?
Llama 3.1 405B Instruct is available on OctoAI API (Deprecated), Together AI, Fireworks AI, IBM watsonx, and Scale AI GenAI Platform. Qwen3.6 Max Preview is available on OpenRouter, Alibaba Cloud PAI-EAS, and Vercel AI Gateway. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.