DeepSeek V4 Flash 0731 vs Ministral 3 3B 2512

Practical read: DeepSeek V4 Flash 0731 costs less and reads eight times more context. One API key runs both.

No card required. Start with 1 million free tokens.

Side by side:

DeepSeek: DeepSeek V4 Flash 0731 compared with Mistral: Ministral 3 3B 2512
Attribute	DeepSeek V4 Flash 0731 `deepseek/deepseek-v4-flash-0731`	Ministral 3 3B 2512 `mistralai/ministral-3b-2512`
Price, 1M in + out	$0.14 Engy, cheapest route	$0.21 Mistral, cheapest route
Best for	Low cost and long documents
Input / output, 1M	$0.047 / $0.095	$0.11 / $0.11
Cached input	$0.01/1M to $0.101175/1M	$0.01055/1M
Context window	1.05M 1,048,576 tokens	131K 131,072 tokens
Provider routes	24 with failover	1
Privacy	Confidential E2EE and zero retention route	Varies by provider
Publisher	DeepSeek	Mistral
Modes	chat	chat
More detail	Overview Pricing Providers	Overview

Price adds one million input and one million output tokens on the cheapest route. Prices and speed change: see the monthly reports and run a small eval before you choose a default.

Test both with your agent

Paste this into Claude Code, Cursor or any coding agent.

Compare DeepSeek V4 Flash 0731 and Ministral 3 3B 2512 in this project through TrustedRouter.

1. Read https://trustedrouter.com/docs/llms.txt
2. Point the OpenAI-compatible client at
   https://api-azure.trustedrouter.com/v1 and read the key from
   TRUSTEDROUTER_API_KEY.
3. Run our eval prompts on deepseek/deepseek-v4-flash-0731, then on mistralai/ministral-3b-2512.
4. Show me cost, latency and quality side by side before changing the default.

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api-azure.trustedrouter.com/v1",
    api_key=os.environ["TRUSTEDROUTER_API_KEY"],
)
for model in ("deepseek/deepseek-v4-flash-0731", "mistralai/ministral-3b-2512"):
    response = client.chat.completions.create(
        model=model,
        messages=[{"role": "user", "content": "What is the capital of France?"}],
    )
    print(model, response.choices[0].message.content)

for model in deepseek/deepseek-v4-flash-0731 mistralai/ministral-3b-2512; do
  curl https://api-azure.trustedrouter.com/v1/chat/completions \
    -H "Authorization: Bearer $TRUSTEDROUTER_API_KEY" \
    -H "Content-Type: application/json" \
    -d "{\"model\": \"$model\", \"messages\": [{\"role\": \"user\", \"content\": \"What is the capital of France?\"}]}"
done

Your agent will need an API key.

Questions

Which should I use, DeepSeek: DeepSeek V4 Flash 0731 or Mistral: Ministral 3 3B 2512?

DeepSeek V4 Flash 0731 has the lower published input-plus-output rate, more Credits provider routes and the larger context window. There is not enough recent probe data to compare speed.

Is DeepSeek: DeepSeek V4 Flash 0731 or Mistral: Ministral 3 3B 2512 cheaper?

The current cheapest TrustedRouter route is $0.142425/1M for DeepSeek: DeepSeek V4 Flash 0731 and $0.211/1M for Mistral: Ministral 3 3B 2512. The comparison uses current catalog prices and updates as provider pricing changes.

Can I test DeepSeek: DeepSeek V4 Flash 0731 and Mistral: Ministral 3 3B 2512 with the same API?

Yes. Use the same OpenAI-compatible TrustedRouter base URL and API key, then change only the model id between deepseek/deepseek-v4-flash-0731 and mistralai/ministral-3b-2512. This makes side-by-side evals possible without maintaining two provider integrations.

More comparisons

All comparisons

Try DeepSeek V4 Flash 0731 and Ministral 3 3B 2512 with one key.

TrustedRouter is useful when you know the model you want, but still need provider rollover, budget limits, usage records, and a prompt path you can verify.

No card required. Start with 1 million free tokens.