AI model
deepseek/deepseek-v4.1-flash:fast-reasoning
DeepSeek: DeepSeek V4.1 Flash (fast) (Reasoning) is a 1,048,576-token model served on Composite at $0.0275 per million tokens in and $0.500 per million tokens out.
Try in Playground| Model ID | deepseek/deepseek-v4.1-flash:fast-reasoning |
|---|---|
| Provider | Morph |
| Context window | 1,048,576 tokens |
| Accepts | text, image |
| Returns | text |
| Input price | $0.0275 per million tokens |
| Output price | $0.500 per million tokens |
| Prompt caching | Supported — cached input is billed at the provider's cache rate, on credits and plans alike |
| Thinking | Optional - see "DeepSeek: DeepSeek V4.1 Flash (fast) (Reasoning) (Reasoning)" in the catalog to turn it on by default |
| Moderated | No |
| Cost on a monthly plan | About 0.6 plan credits per typical call (8k in, 1k out) |
| Routing endpoints | 1 |
Make a Composite API key and type deepseek/deepseek-v4.1-flash:fast-reasoning as the model name. JanitorAI takes the full URL https://composite.lucidity.sh/v1/chat/completions; SillyTavern, ChubAI, Agnai and RisuAI take https://composite.lucidity.sh/v1. It runs on credits, a plan, or your own provider key.
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This model has not carried enough traffic on Composite yet to publish a success rate, a latency figure or a traffic rank. The numbers appear here once it has.
$0.0275 per million tokens input · $0.500 per million tokens output
Credits pay the provider’s price plus 25%; cache hits cost less.
On a monthly plan, a typical call (8k tokens in, 1k out) uses about 0.6 plan credits, at the provider's own price.
Morph
DeepSeek models are known for strong reasoning and coding ability at aggressive pricing, which makes them a common pick for roleplay accounts that send a high volume of messages.
With a 1,048,576-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.
It is priced low enough for high-volume daily roleplay without the per-message cost adding up quickly.
DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...
Supplied by Morph, not written by Composite.
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