Skip to main content
Wu-Weism requires an AI provider to run causal analysis. The platform supports three providers: Anthropic (Claude), OpenAI (GPT), and Google Gemini. You bring your own API key (BYOK) — it is sent per-request and never stored on Wu-Weism servers.
Your API key is transmitted directly to your chosen provider with each request. Wu-Weism servers do not log, store, or have persistent access to your key.

​
Adding a provider key

1

Open Model Settings

In the Causal Chat workbench, click the Model Settings icon in the left sidebar. The settings panel will open.
2

Select your provider

Under AI Provider, choose from:
  • Anthropic — Claude models
  • OpenAI — GPT models
  • Gemini — Google Gemini models
3

Paste your API key

In the API Key field for your selected provider, paste your key. The key field is masked after input.Keys are validated on your next request — if the key is invalid or has insufficient permissions, you will see an error in the chat response.
4

Optionally specify a model ID

Under Model, you can type a specific model ID from your provider’s available models (e.g., claude-opus-4-5, gpt-4o, gemini-2.0-flash). If you leave this field on the default, Wu-Weism uses the recommended model for your selected provider.

​
Choosing a provider

Best for: Deep causal reasoning, long context, and complex multi-step inference.Claude’s extended context window and strong instruction-following make it the best default choice for:
  • Long research papers attached as PDFs
  • Multi-turn sessions that build on prior claims
  • Complex counterfactual chains that require sustained reasoning
Claude models available from Anthropic include the Claude 3 and Claude 4 families. Use a model that supports extended context (100K+ tokens) if you are attaching large PDFs.Get an API key at console.anthropic.com.

​
Switching providers during a session

You can switch providers at any point in a session without losing your conversation history or claim records.
1

Open Model Settings

Click the Model Settings icon in the sidebar.
2

Select a different provider

Change the AI Provider selection. If you have already entered a key for that provider in this session, it will be available immediately.
3

Enter a key if needed

If you have not previously entered a key for the new provider, paste it into the API Key field.
4

Continue the conversation

Your next message will use the newly selected provider. Prior claims in the session remain attributed to the provider that generated them.
Switching providers mid-session can be useful for validation: run the same intervention question on two different providers and compare whether the causal claims are consistent. Significant divergence may indicate that the SCM constraints are not fully constraining the response, which is worth investigating.

​
Using a custom model ID

Each provider offers multiple models. By default, Wu-Weism selects a recommended model per provider. To use a specific model:
  1. Open Model Settings
  2. In the Model field, enter the exact model ID as defined by your provider
Example model IDs
If you enter a model ID that does not exist or is not available on your provider account, the request will fail with a 400 Invalid model for selected provider error.

​
Error reference

​
API usage and billing

Your API key is billed directly by the provider. Wu-Weism does not charge for AI compute — you pay your provider at their standard rates. Monitor your usage in your provider’s dashboard: Complex causal sessions with large PDFs attached consume more tokens. PDF Synthesis with six documents will use significantly more tokens per session than a simple Causal Chat query.

​
Next steps