DeepSeek V4.1 Flash
Reasoning and vision at a fraction of flagship prices.
DeepSeek V4.1 Flash pairs reasoning, vision, and a million-token context with some of the lowest prices in the catalog — built for high-volume work that still has to think.
- High volume
- Long context
- Low cost
Model details
- Context window
- 1M tokens
- Max output
- 393K tokens
- Input
- Text, images
- Output
- Text
- Capabilities
- Reasoning, Vision, Tool calling, Streaming, JSON output
- Interfaces
- OpenAI-style Chat Completions, Anthropic-style Messages, OpenAI-style Responses
Pricing
Prices use the units shown below. No gateway fees. Usage, size and model options may affect the total.
| Metric | Price |
|---|---|
| / 1M input tokens | $0.15 |
| / 1M output tokens | $0.6 |
| / 1M cached input tokens | $0.003 |
| / 1M input tokens · Peak hours | $0.3 |
| / 1M output tokens · Peak hours | $1.2 |
| / 1M cached input tokens · Peak hours | $0.006 |
| / 1M input tokens · Off-peak hours | $0.15 |
| / 1M output tokens · Off-peak hours | $0.6 |
| / 1M cached input tokens · Off-peak hours | $0.003 |
Why teams pick it
- Reasoning and vision at a fraction of flagship prices
- Over 1M tokens of context, with room for very long answers
- Succeeds V4 Flash and V4 Pro
Call DeepSeek V4.1 Flash
DeepSeek V4.1 Flash answers on any of the APIs below — pick the one your code already speaks and just swap in your Cloakray key.
/v1/chat/completionsOpenAI-style Chat Completions · openai SDK or plain HTTP
curl https://api.cloakray.com/v1/chat/completions \
-H "Authorization: Bearer ckr_..." \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4.1-flash",
"messages": [
{
"role": "user",
"content": "Hello"
}
]
}'/v1/messagesAnthropic-style Messages · @anthropic-ai/sdk SDK or plain HTTP
curl https://api.cloakray.com/v1/messages \
-H "Authorization: Bearer ckr_..." \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4.1-flash",
"max_tokens": 1024,
"messages": [
{
"role": "user",
"content": "Hello"
}
]
}'/v1/responsesOpenAI-style Responses · openai SDK or plain HTTP
curl https://api.cloakray.com/v1/responses \
-H "Authorization: Bearer ckr_..." \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4.1-flash",
"input": "Hello"
}'Conversation compaction is also available at POST /v1/responses/compact.
More from DeepSeek
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