Anthropic

Claude Opus 4-6

Our most intelligent model for building agents and coding

Category Text Model ID claude-opus-4-6

Context Length200K tokens / 1M tokens (beta)

Extended ThinkingYes

Adaptive ThinkingYes

Pricing & Specs

💰 Pricing

Input$5 / M tokens

Output$25 / M tokens

⚙️ Specs

Context Length200K tokens / 1M tokens (beta)

Extended ThinkingYes

Adaptive ThinkingYes

Max Output128K tokens

Priority TierYes

Comparative LatencyModerate

Reliable Knowledge CutoffMay 2025

Training Data CutoffAug 2025

Model TypeLarge Language Model (LLM)

API Examples

Python

import anthropic

client = anthropic.Anthropic(
    api_key="your-api-key"
)

message = client.messages.create(
    model="claude-opus-4-6",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello, Claude!"}
    ]
)

print(message.content[0].text)

cURL

curl https://api.xairouter.com/v1/messages
  -H "Content-Type: application/json"
  -H "x-api-key: YOUR_API_KEY"
  -H "anthropic-version: 2023-06-01"
  -d '{
    "model": "claude-opus-4-6",
    "max_tokens": 1024,
    "messages": [
      {"role": "user", "content": "Hello, Claude!"}
    ]
  }'

Developer Assist

# Set environment variables in terminal
export ANTHROPIC_AUTH_TOKEN=sk-Xvs...  # Your API Key
export ANTHROPIC_BASE_URL=https://api.xairouter.com

# Start Claude Code
claude

# Now you can use claude-opus-4-6 model directly for development

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