# DeepSeek V4.1 Flash Fast vs Qwen3.6 35B A3B

As of November 12, 2026, Qwen3.6 35B A3B and DeepSeek V4.1 Flash Fast cost the same per input token ($0.05 per 1M), but Qwen3.6 35B A3B costs 167% more per output token ($0.40 vs $0.15) and has a 256K-token context window versus 1M.

- Page: https://models.litellm.ai/compare/deepseek-v4.1-flash-fast-vs-qwen3.6-35b-a3b
- DeepSeek V4.1 Flash Fast: https://models.litellm.ai/models/deepseek-v4.1-flash-fast
- Qwen3.6 35B A3B: https://models.litellm.ai/models/qwen3.6-35b-a3b

## Side by side

| | DeepSeek V4.1 Flash Fast | Qwen3.6 35B A3B |
|---|---|---|
| Input, per 1M tokens | $0.05 | $0.05 |
| Output, per 1M tokens | $0.15 | $0.40 |
| Cache read, per 1M tokens | $0.003 | $0.02 |
| Cache write, per 1M tokens | – | – |
| Context window | 1,048,576 tokens | 262,144 tokens |
| Max output | 262,144 tokens | 262,144 tokens |
| Image input | No | Yes |
| Tool calling | Yes | Yes |
| Structured output (JSON) | Yes | Yes |
| Prompt caching | Yes | Yes |
| Reasoning | Yes | Yes |
| Providers on LiteLLM | 4 | 12 |
| Price shown is from | Refuseless | Sail |
| Added to LiteLLM | September 29, 2026 | June 2026 |

Headline prices in USD per 1M tokens, from LiteLLM's model price file.

## Cheapest provider for each

- DeepSeek V4.1 Flash Fast: Refuseless at $0.05 input per 1M tokens (`refuseless/deepseek-v4.1-flash-fast`)
- Qwen3.6 35B A3B: Sail at $0.05 input per 1M tokens (`sail/Qwen/Qwen3.6-35B-A3B`)

## When to pick which

- DeepSeek V4.1 Flash Fast: Costs 63% less per output token: $0.15 vs $0.40 per 1M.
- DeepSeek V4.1 Flash Fast: Larger context window: 1,048,576 vs 262,144 tokens.
- Qwen3.6 35B A3B: Supports image input, which DeepSeek V4.1 Flash Fast doesn't list.
- Qwen3.6 35B A3B: Available from 12 providers through LiteLLM, vs 4.

## FAQ

### Which is cheaper, DeepSeek V4.1 Flash Fast or Qwen3.6 35B A3B?

DeepSeek V4.1 Flash Fast is cheaper at 3 input tokens per output token: $0.075 per 1M tokens blended ($0.05 input, $0.15 output), versus $0.1375 ($0.05 and $0.40) for Qwen3.6 35B A3B, as of November 12, 2026.

### Which has the larger context window, DeepSeek V4.1 Flash Fast or Qwen3.6 35B A3B?

DeepSeek V4.1 Flash Fast has the larger context window: 1,048,576 tokens, versus 262,144 for Qwen3.6 35B A3B.

### Can I switch from DeepSeek V4.1 Flash Fast to Qwen3.6 35B A3B without changing my code?

Yes. Through LiteLLM both use the OpenAI format, so switching means changing the model name from "refuseless/deepseek-v4.1-flash-fast" to "sail/Qwen/Qwen3.6-35B-A3B", or pointing a LiteLLM gateway model alias at the other model. You can also use one as a fallback for the other.