DeepSeek route
deepseek-v4.1-flash
deepseek-v4.1-flash API pricing.
One OpenAI-compatible route at the vendor list price with 0% markup, billed per token from one prepaid balance. No subscription required.
Input / 1M tokens
$0.18
Output / 1M tokens
$0.73
Context window
1M
Provider
DeepSeek
Workload calculator
Put the token rate into context.
These examples apply the published input and output rates directly. Actual cost follows the exact tokens your client sends and the model returns.
This route is the 8th cheapest of 55 comparable text models and cheaper than 47 on the same key. Its context window ranks 27th of 55.
Short request
$0.0025
10K input + 1K output
Agent turn
$0.025
100K input + 10K output
Exact token billing
No request minimum
One model ID change
OpenAI compatible
Cost neighbourhood
Nearby routes, same workload.
Every comparison uses the same 100K-input / 10K-output turn. Changing route is a one-line model ID edit.
Price does not measure task quality. Check deepseek-v4.1-flash benchmark evidence before optimizing on cost alone. For generation routes, see GPT Image 2.
First request
Route it in one call.
Use any OpenAI SDK or tool. Keep the request shape, point the base URL at RouterPlex, and set the model ID shown here.
Read the quickstartcurl https://api.routerplex.com/v1/chat/completions \-H "Authorization: Bearer $ROUTERPLEX_API_KEY" \-H "Content-Type: application/json" \-d '{"model": "deepseek-v4.1-flash","messages": [{"role": "user", "content": "Hello!"}]}'
Route notes
Questions before production traffic.
01How much does the deepseek-v4.1-flash API cost?+
Through RouterPlex, deepseek-v4.1-flash costs $0.18 per 1M input tokens and $0.73 per 1M output tokens — the vendor list price with 0% markup, billed per token from a prepaid balance you top up from $5.
02What does one deepseek-v4.1-flash agent turn cost?+
A 100K-token input with a 10K-token reply costs about $0.025 on deepseek-v4.1-flash. That makes it the 8th cheapest of 55 comparable text models on RouterPlex, roughly 2.3× the cost of the cheapest option (DeepSeek V4 Flash).
03What is a cheaper alternative to deepseek-v4.1-flash?+
GLM-5.3 Flash from Zhipu is the closest cheaper model on RouterPlex — $0.020 per agent turn against $0.025 for deepseek-v4.1-flash, at $0.15/1M input and $0.50/1M output. Both run on the same key and the same endpoint, so switching is a one-line model ID change.
04Is deepseek-v4.1-flash cheaper than Hy3?+
Yes. Per agent turn, deepseek-v4.1-flash costs about $0.025 against $0.028 for Hy3 — 10% less.
05What is the context window of deepseek-v4.1-flash?+
deepseek-v4.1-flash supports a 1M token context window on RouterPlex, the 27th largest of the 55 models that publish one.
06Can I use deepseek-v4.1-flash with the OpenAI SDK?+
Yes. RouterPlex serves deepseek-v4.1-flash through an OpenAI-compatible endpoint at https://api.routerplex.com/v1 — point any OpenAI SDK or tool at that base URL with your RouterPlex key and set model to "deepseek-v4.1-flash".
Provider family
More from DeepSeek.
Deploy this route
Put deepseek-v4.1-flash behind one key.
Top up from $5 with no subscription required.