Deepseek V4.1 Flash

Deepseek V4.1 Flash by DeepSeek, available on Aether API through one OpenAI-compatible API key. Priced at $0.024696/M input, $0.3528/M output. 1M context window.

Pricing

Provider	DeepSeek
Model ID	deepseek-v4.1-flash
Endpoint	https://aetherapi.dev/v1/chat/completions
Context window	1M
Cached input	$0.003024/1M tokens
Input	$0.024696/1M tokens
Output	$0.3528/1M tokens
Official provider price	$0.0441/1M input · $0.63/1M output
Discount	20% off

Supported endpoints

• POST https://aetherapi.dev/v1/chat/completions
• POST https://aetherapi.dev/v1/responses
• POST https://aetherapi.dev/v1/messages

How to call it

Send a request to https://aetherapi.dev/v1/chat/completions with your Aether API key:

curl https://aetherapi.dev/v1/chat/completions \
  -H "Authorization: Bearer sk-aetherapi-..." \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek-v4.1-flash","messages":[{"role":"user","content":"Hello"}]}'

Related

Compare this model against every other model on the models page, or see Aether API pricing and the chat completions reference.