Grok 4.20 Reasoning

curl https://api.therouter.ai/v1/chat/completions \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "xai/grok-4.20-reasoning",
    "messages": [
      {"role": "system", "content": "Reason carefully, cite uncertainty, and give the shortest defensible answer."},
      {"role": "user", "content": "Compare these two migration plans and identify the hidden failure modes."}
    ],
    "reasoning": {"effort": "high"}
  }'

curl https://api.therouter.ai/v1/chat/completions \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "xai/grok-4.20-reasoning",
    "messages": [{"role": "user", "content": "Find the risk score for customer c_123 and explain whether to escalate."}],
    "tools": [{"type": "function", "function": {"name": "get_customer_risk", "description": "Return the current risk score for a customer", "parameters": {"type": "object", "properties": {"customer_id": {"type": "string"}}, "required": ["customer_id"]}}}],
    "tool_choice": "auto",
    "reasoning": {"effort": "medium"}
  }'

curl https://api.therouter.ai/v1/chat/completions \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "xai/grok-4.20-reasoning",
    "messages": [{
      "role": "user",
      "content": [
        {"type": "image_url", "image_url": {"url": "https://therouter.ai/assets/vision-sample.png"}},
        {"type": "text", "text": "Identify the single highest-risk bottleneck and justify it."}
      ]
    }],
    "reasoning": {"effort": "medium"}
  }'

curl https://api.therouter.ai/v1/chat/completions \
  -H "Authorization: Bearer $THEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "xai/grok-4.20-reasoning",
    "messages": [{"role": "user", "content": "Return a risk matrix for migrating a healthcare support bot."}],
    "response_format": {"type": "json_object"},
    "reasoning": {"effort": "medium"}
  }'