DeepSeek V4.1 Flash
Use DeepSeek V4.1 Flash on the GreenPT API with EU hosting, a 1M-token context, configurable reasoning, and discounted prompt caching.
Use deepseek-v4.1-flash for chat, reasoning, and coding through GreenPT's
OpenAI-compatible API. The model runs on EU infrastructure
and has a 1M-token context window.
Make a request
Set GREENPT_API_KEY to your GreenPT API key, then run:
curl https://api.greenpt.ai/v1/chat/completions \
-H "Authorization: Bearer $GREENPT_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4.1-flash",
"messages": [
{ "role": "user", "content": "Explain how a database index speeds up a query." }
],
"reasoning_effort": "none",
"max_tokens": 512
}'The GreenPT model ID is deepseek-v4.1-flash. Keep the v4.1 version in the
ID when configuring an OpenAI-compatible client. See Coding with GreenPT
for client setup and Streaming for streamed responses.
Pricing
| Token class | EUR per million tokens |
|---|---|
| Input | €0.22 |
| Output | €1.10 |
| Cached input | €0.011 |
These are GreenPT customer rates. Cached input replaces the normal input rate only for tokens reported as cache hits. Cache reuse is automatic when the provider recognizes a repeated prefix; a hit is not guaranteed. See Prompt caching and Pricing.
Reasoning effort
Accepted values are none, minimal, low, medium, and high. The example
disables reasoning for a short answer. For a task that needs deliberation,
set reasoning_effort to low, medium, or high and increase max_tokens.
Reasoning tokens consume the output budget. A small budget can be exhausted
before the model returns visible answer text. Omit reasoning_effort to use
the provider's default. See Reasoning effort.
Energy and hosting
GreenPT estimates energy from input, output, and cached-input token counts. This model adopts the DeepSeek V4 Flash 0731 configuration:
| Setting | Value |
|---|---|
| Input energy | 4.7 Wh per million tokens |
| Output energy | 280 Wh per million tokens |
| Cached-input energy | 0.2 Wh per million tokens |
| PUE multiplier | 1.3 |
| Carbon intensity | 0.193 kgCO2/kWh |
The token coefficients are estimates inherited from 0731, not a separate measurement of V4.1 Flash. They represent IT energy before the PUE multiplier. See Carbon calculations for the method and Processing locations for hosting details.
Existing integrations
Adding V4.1 Flash does not change your selected model. The
deepseek-v4-flash-0731 ID remains a separate catalogue entry with its own
pricing. Change the model ID explicitly when you want to use V4.1 Flash.