DeepSeek V4.1 Flash

Name: DeepSeek V4.1 Flash
Brand: deepseek
SKU: deepseek/deepseek-v4.1-flash
Price: 0.3 USD
Availability: InStock

deepseek/deepseek-v4.1-flash

text, image in · text out · 1,000,000 context · 384,000 max output · uptime 100.00% · TTFT 1105 ms

toolsschemavisionreasoningcacheno-trainShow prices also in

Effective cost per 1k requestsInput tokens 2,000Output tokens 500Cached share 50%

cost = p_in·(input − cached) + p_cache_read·cached + p_out·output + p_req; cached tokens are the prefix a sticky endpoint already holds (part2b §9.3), which is why the cheapest list price is not always the cheapest request.

Provider	Region · quant	Context / max out	Input / M	Output / M	Cache read / write	Markup	Per 1k req	Uptime 30 d	TTFT p50 / p95	Throughput	Last 24 h	Fidelity	Data	Capabilities	Status
DeepSeek	cn · none	1,000,000 / 384,000	$0.300	$1.200	$0.006 / —	pass-through	$0.906	—	—	—	no traffic	—	365 d	model default	active
OpenRouter	global · unknown	1,048,576 / 943,718	$0.315	$1.260	$0.006 / —	+5.0%	$0.951	100.00%	1105 / 1105 ms	14.4 tok/s	100.00% · 1105 ms · 14.4 tok/s	—	no-train 30 d	16 differ	active

Quick start

curl https://api.ai.ml/v1/chat/completions \
  -H "Authorization: Bearer $AIML_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek/deepseek-v4.1-flash","messages":[{"role":"user","content":"Say hello"}]}'

Get a key in the console

Changelog

new_model endpoint ep_openrouter_deepseek-v4.1-flash_global (deepseek/deepseek-v4.1-flash) added as active; price input 0.315 output 1.260 USD/M 10/5/2026