OpenRouter → QuickSilver Pro

The 5 steps

1. 1

   Get a QuickSilver Pro API key

   Sign up at quicksilverpro.io/dashboard. New accounts get $1 in free credits — enough for ~500-700 real DeepSeek V3 calls to evaluate before paying. Minimum top-up is $5.

2. 2

   Change the base URL

   In your OpenAI SDK init, swap the base_url.

   - base_url="https://openrouter.ai/api/v1"
   + base_url="https://api.quicksilverpro.io/v1"

3. 3

   Swap the API key

   Replace OPENROUTER_KEY with your QSP key (from step 1).

   - api_key=os.environ["OPENROUTER_KEY"],
   + api_key=os.environ["QSP_KEY"],

4. 4

   Rename model IDs

   Drop the provider/ prefix.

   OpenRouter	QuickSilver Pro
   deepseek/deepseek-chat	deepseek-v3
   deepseek/deepseek-r1	deepseek-r1
   qwen/qwen3.5-35b-a3b	qwen3.5-35b

5. 5

   Test your core flows end-to-end

   Run one representative request for each feature your app uses — chat, tool_calls, json_schema strict mode, streaming. All standard OpenAI features work on QSP; any behavioral diff is a bug — report it to us and we'll fix it.

Full before/after

from openai import OpenAI

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key=os.environ["OPENROUTER_KEY"],
)

r = client.chat.completions.create(
    model="deepseek/deepseek-chat",
    messages=[{"role": "user", "content": "Hi"}],
)

from openai import OpenAI

client = OpenAI(
    base_url="https://api.quicksilverpro.io/v1",
    api_key=os.environ["QSP_KEY"],
)

r = client.chat.completions.create(
    model="deepseek-v3",
    messages=[{"role": "user", "content": "Hi"}],
)

Common migration pitfalls

Need help?

Email hello@quicksilverpro.io — a human replies usually within 4 hours. For the broader comparative analysis (when to migrate, when to stay), see QuickSilver Pro vs OpenRouter.