The short answer
DeepSeek V4.1 Flash is a DeepSeek model priced at $0.3 per million input tokens and $1.2 per million output tokens, with a 1M token context window. One standard answer, meaning 1,000 tokens in and 500 tokens out, costs $0.0009. Inside Whizi it costs 1 credit per message and needs the Pro plan or above.
That makes it mid-priced within the catalogue: 78 of the 119 priced models cost more per answer, and 40 cost less.
What DeepSeek V4.1 Flash costs
List rates are what the provider charges per token. The cost of one standard answer is the more useful number, because it prices the same unit of work across every model regardless of how each one is billed.
| Input, per million tokens | $0.3 |
| Output, per million tokens | $1.2 |
| One standard answer | $0.0009 |
| One thousand answers | $0.9000 |
| Context window | 1M tokens |
| Credits per message in Whizi | 1 |
| Minimum Whizi plan | Pro |
| Rank by cost, of 119 priced models | 41 |
Prices are the published DeepSeek rates as carried by OpenRouter, last refreshed 2026-09-26. The full dataset covering all 130 models from 34 providers is the AI model cost index, which is free to reuse with attribution.
What it costs inside Whizi
Whizi meters messages in credits rather than tokens, and DeepSeek V4.1 Flash is charged at 1 credit per message. The cost does not change with the length of your message or the length of the answer, so a one line question and a long document analysis cost the same.
| Plan | Price per month | Monthly credits | Messages on this model |
|---|---|---|---|
| Pro | $29.99, or $19.99 billed yearly | 2,500 | 2,500 |
| Powerhouse | $49.99, or $34.99 billed yearly | 10,000 | 10,000 |
DeepSeek V4.1 Flash is included from the Pro plan up. Pro is a curated tier rather than everything cheap: one or two current flagships per model family, each fast tier, and the high volume workhorses. See plans and limits.
How it compares on price
Against the cheapest model in the index, Ling-3.0-flash at $0.000053 per answer, DeepSeek V4.1 Flash costs 17 times more. Against the median, Mistral Large 4 at $0.0017, it costs 1.9 times less.
Its nearest neighbours from DeepSeek:
| Model | One answer | Context | Credits |
|---|---|---|---|
| DeepSeek V4 Flash 0731 | $0.0003 | 1M | 1 |
| DeepSeek V3.2 | $0.0005 | 164K | 1 |
| DeepSeek V3.1 | $0.0007 | 164K | 1 |
| DeepSeek V4.1 Flash (this page) | $0.0009 | 1M | 1 |
If DeepSeek V4.1 Flash is more model than a given task needs, DeepSeek V3.1 is the cheaper DeepSeek option at $0.0007 per answer and 1 credit per message. Routing routine work down a tier is the single biggest thing you can do to make an allowance last.
The context window in practice
DeepSeek V4.1 Flash accepts 1M tokens of context, which is roughly 1600 pages of text. That is around the median for the priced catalogue.
Advertised context and usable context are not the same thing. Recall tends to degrade before the stated limit is reached, particularly for material in the middle of a long input, so the practical test is to upload a long document and ask about something buried halfway through rather than trusting the number.
The number matters most when you are working from your own files. If a document is too long for the model you picked, switching to a larger-context model in the same conversation carries the thread across, so you are not starting over. See switching models mid-conversation.
- Input $0.3 and output $1.2 per million tokens
- $0.0009 for one standard answer, $0.9000 for a thousand
- 1M token context window
- 1 credit per message inside Whizi
- Requires the Pro plan or above
- Ranks 41 of 119 priced models by cost per answer
Frequently asked questions
How much does DeepSeek V4.1 Flash cost?
$0.3 per million input tokens and $1.2 per million output tokens at list rates, which works out to $0.0009 for one standard answer of 1,000 tokens in and 500 out, or $0.9000 for a thousand of them. Inside Whizi it is 1 credit per message on a monthly allowance, rather than metered per token.
Which Whizi plan includes DeepSeek V4.1 Flash?
Pro and above, which is $29.99 per month or $19.99 billed yearly. At 1 credits per message, a Pro allowance of 2,500 credits covers 2,500 messages on this model if you spend the whole allowance here, and most people mix in a 1 credit model for routine work so it goes further.
What is the context window of DeepSeek V4.1 Flash?
1M tokens, which is roughly 1600 pages of text and sits around the median for the priced catalogue. Treat that as the ceiling rather than the working figure: recall usually degrades before the stated limit, especially for content in the middle of a long input.
Is DeepSeek V4.1 Flash expensive compared to other models?
It ranks 41 of 119 priced models by cost per answer, so 78 cost more and 40 cost less. The spread across the whole catalogue is about 2000 times from cheapest to priciest, which is far wider than most people assume, so "expensive" only means anything relative to the specific alternative you would otherwise use.
