DeepSeek V4 Pro vs Mistral Medium 3.5
Price in rupees, context and benchmarks side by side; same key, a one-string switch.
Scores from LMArena and Epoch AI, as published; a blank cell means not measured there.
What a month costs on each
On a typical 75/25 input-output mix, DeepSeek V4 Pro costs less (about 46% less than Mistral Medium 3.5). DeepSeek V4 Pro takes the longer prompt at 1M tokens. Try your own numbers in the cost calculator.
Call either one
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "deepseek/deepseek-v4-pro", "messages": [{"role": "user", "content": "Hello"}]}'
# the other one: change the model string
-d '{"model": "mistralai/mistral-medium-3-5", ...}'Common questions
Which is cheaper, DeepSeek V4 Pro or Mistral Medium 3.5?
DeepSeek V4 Pro is cheaper on a typical mix of 75% input and 25% output tokens, by about 46%. Through Rapid Router both are billed at the provider list price per million tokens, in rupees.
Which has the larger context window?
DeepSeek V4 Pro, at 1M tokens. Mistral Medium 3.5 offers 262K tokens.
Can I switch between DeepSeek V4 Pro and Mistral Medium 3.5 without changing code?
Yes. Both are callable at https://rapidrouter.ai/api/v1 with the same OpenAI-compatible request; only the model string changes (deepseek/deepseek-v4-pro or mistralai/mistral-medium-3-5).
How do I pay for DeepSeek V4 Pro or Mistral Medium 3.5 in India?
Top up a Rapid Router balance with UPI or a card in rupees, get a GST invoice on every recharge, and both models debit that balance per request.