DeepSeek V4.1 Flash
by DeepSeekChat
DeepSeek V4.1 Flash model for reasoning and agentic coding
- Context
- 1.05M tokens
- Max output
- 393,216 tokens
- Parameters
- 763B total, 16B active
- Released
- 2026-09-10
- Weights
- Open
- Licence
- mit
deepseek/deepseek-v4-1-flash · also seen as deepseek-ai/deepseek-v4.1-flash, accounts/fireworks/models/deepseek-v4p1-flash, accounts/fireworks/routers/deepseek-flash-latest, deepseek-v4.1-flash-fast, +38 more
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-09-10
- Weights
- Opennot gated
- License
- mit
- Input
- Text, Image
- Output
- Text
- Context window
- 1,050,000 max across endpoints
- Max output
- 393,216
- Providers
- 70 + 23 gateways, not counted as providers
- Epoch Capabilities Index
- 155.6 ± 2 against price
- Direct price range
- $0.090–$0.672 in · $0.28–$2.40 out per 1M tokens · 57 of 70 providers have a comparable price
More details
- Last updated
- 2026-09-10
- Knowledge cutoff
- 2025-05
- Weights link
- Hugging Face · deepseek-ai/DeepSeek-V4.1-Flash
- Parameters
- 763B total, 16B active
- Developer country
- China
- Training compute
- 4.3×10²⁴ FLOP
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel tools
- Structured output
- Reasoning
- Image input
- PDF input
- Audio input
- Audio outputunknown
- Video input
- Prompt caching
- Web searchunknown
- Computer useunknown
- System messages
- Assistant prefill
- Temperature
- Streaming
- Attachments
Endpoints
One row per provider and variant; gateways are listed separately.
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Price history
Atom feedNo change since 19 Oct 2026. The cheapest direct price has been $0.09 in / $0.30 out per 1M tokens at sail on every data refresh since then.
Tracked from 19 Oct 2026, the earliest refresh this model's headline price can be rebuilt from. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON
Cost calculator
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Similarly priced models
Blended rate per 1M tokens, each at its own cheapest provider (10M input : 2M output mix).
| Model | Blended/1M | In/1M | Out/1M | Context | vs DeepSeek V4.1 Flash |
|---|---|---|---|---|---|
| DeepSeek V4.1 Flash 1017DeepSeek | $0.113 | $0.075 | $0.30 | 1M | +0% |
| gemini 2.0 flash liteGoogle | $0.113 | $0.075 | $0.30 | 1M | +0% |
| Qwen3 32BAlibaba (Qwen) | $0.113 | $0.08 | $0.28 | 131K | +1% |
| Llama 3.2 11B Instruct (Inference.net)Inference.net | $0.113 | $0.07 | $0.33 | 128K | +1% |
| Llama 3.2 11B InstructMeta | $0.113 | $0.07 | $0.33 | 128K | +1% |
| GPT-5.6 LunaOpenAI | $0.112 | $0.06 | $0.37 | 1.05M | −1% cheaper |
| Hy-MT2-30B-A3BTencent | $0.111 | $0.074 | $0.295 | 8.2K | −1% cheaper |
| Hy-MT2-7BTencent | $0.111 | $0.074 | $0.295 | 8.2K | −1% cheaper |
More from DeepSeek
Newest DeepSeek models in the catalogue. All DeepSeek models
| Model | Released | Context | Listed price |
|---|---|---|---|
| DeepSeek V4 Flash | 2026-10-17 | 1.05M | from $0.07 |
| DeepSeek V4.1 Flash 1017 | 2026-10-17 | 1M | from $0.08 |
| DeepSeek V4 Flash Vision Exp | 2026-10-17 | 1.05M | from $0.14 |
| DeepSeek V4 Pro 0813 | 2026-08-12 | 1M | from $0.88 |
| DeepSeek V4 Flash Latest | 2026-07-31 | 1.05M | from $0.04 |
| DeepSeek Pro Latest | 2026-07-06 | 1M | unpriced |
| DeepSeek Latest | 2026-05-03 | 1.05M | $0.145 via NanoGPT |
| DeepSeek V4 Pro | 2026-04-24 | 1M | from $0.45 |