Claude Sonnet 4.5 API via TokenMix

Use Claude Sonnet 4.5 from Anthropic as a chat model through the TokenMix AI API relay and multi-model gateway.

Claude Sonnet 4.5 is the latest Sonnet model with excellent balance of intelligence, speed, and cost for high-volume tasks.

API access

  • Base URL: https://api.tokenmix.ai/v1
  • Model ID: claude-sonnet-4.5
  • OpenAI SDK compatible. Change the base URL and use your TokenMix API key.

Pricing

Input $3/M tokens, output $15/M tokens

Capabilities

Vision, Function calling, JSON mode, Streaming, Reasoning

Model specs

  • Context: 200K tokens
  • Max output: 64K tokens

Availability

3/3 available API endpoints are healthy right now.

Recent performance

TTFT 1256ms, latency 8375ms, throughput 41.7 tok/s.

Start using this model

Create an API key, top up from $1 when needed, and call this model through the TokenMix OpenAI-compatible endpoint.

Create API key · View pricing · Quickstart