What is Claude Sonnet Latest?

Claude Sonnet Latest is a model from Anthropic, released on Apr 27, 2026. This model always redirects to the latest model in the Anthropic Claude Sonnet family.

How much does Claude Sonnet Latest cost?

On the Respan gateway, input starts at $2.00 per 1M tokens on OpenRouter, and output starts at $10.00 per 1M tokens on OpenRouter, after gateway discounts.

Which providers serve Claude Sonnet Latest on Respan?

Claude Sonnet Latest is served by OpenRouter.

What is Claude Sonnet Latest's context window?

Claude Sonnet Latest accepts up to 1M tokens of context.

How do I use Claude Sonnet Latest with the Respan gateway?

Point any OpenAI-compatible SDK at https://api.respan.ai/api/ with your Respan API key and set the model to "claude-sonnet-latest". To set it up with a coding agent, copy the agent setup prompt at the top of this page.

How fast is Claude Sonnet Latest?

Over the last 30 days of requests through the Respan gateway, the fastest provider was OpenRouter at 67 tokens per second, and the lowest response latency was 7.0 seconds on OpenRouter. Speed varies with request size and provider.