API Reference

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Endpoints

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Authentication and examples

import anthropic

client = anthropic.Anthropic(
    base_url="https://www.bettertoken.ai",
    api_key="YOUR_API_KEY",
)

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

curl https://www.bettertoken.ai/messages       -H "x-api-key: YOUR_API_KEY"       -H "anthropic-version: 2023-06-01"       -H "content-type: application/json"       -d '{ ... }'

from openai import OpenAI

client = OpenAI(
    base_url="https://www.bettertoken.ai/v1",
    api_key="YOUR_API_KEY",
)

response = client.responses.create(
    model="Codex group model ID copied from https://www.bettertoken.ai/pricing",
    input="Hello",
)

curl https://www.bettertoken.ai/v1/chat/completions       -H "Authorization: Bearer YOUR_API_KEY"       -H "content-type: application/json"       -d '{ ... }'

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Model selection rules

• Claude Code + Claude_* keys: do not set model variables manually; only configure ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN
• Claude Code + Codex_* keys: add model mappings through ANTHROPIC_DEFAULT_HAIKU_MODEL, ANTHROPIC_DEFAULT_SONNET_MODEL, and ANTHROPIC_DEFAULT_OPUS_MODEL
• Codex: use a model ID copied from the Codex group in the model plaza (https://www.bettertoken.ai/pricing)
• External tools: also use Codex group model IDs instead of fixed Claude model names

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Environment variable reference