Open-source AI infrastructure

Claude Sonnet 4 on OpenRouter

Review Claude Sonnet 4 on OpenRouter: token pricing, context window, capabilities, modalities, and routing details in the Everstack model catalog.

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Claude Sonnet 4 pricing and limits on OpenRouter

Token pricing through OpenRouter: $3.00 per million input tokens, $15.00 per million output tokens. Limits: 1000K token context window, 64K max output tokens.

Capabilities and modalities

Supported capabilities: chat, function_calling, vision, reasoning. Accepts image, text, pdf input. Returns text output. Model family: claude. Catalog status: stable.

Routing Claude Sonnet 4 through Everstack

Call Claude Sonnet 4 on OpenRouter through one OpenAI-compatible endpoint, with provider fallback, semantic caching, per-tenant rate limits, and OpenTelemetry traces for latency, tokens, and cost.