Changelog

Latest updates and changes to Claude Code API.

LLMsRelay is an independently operated API gateway. It is not affiliated with or endorsed by Anthropic, PBC. Product and model names are used only to describe compatibility.

2026-04

1M-token context (beta) available for Opus 4.7 and Sonnet 4.6 — enable with header anthropic-beta: context-1m-2025. Same per-token rate as 200K.
Public model discovery — GET /v1/models now returns the canonical list with context_window, supports_1m_context and supports_thinking flags. Use it as the source of truth in CI.
Liveness probe — public /healthz endpoint for monitoring.

2025-04

Claude Opus 4.7 — flagship model
Improved streaming latency across all models
Enhanced error messages with more specific error types

2025-03

Claude Sonnet 4.5 — balanced model with improved coding performance
Added per-key credit limits
OpenAI-compatible streaming improvements
New documentation site

2025-02

Initial release of Claude Code API v2
Anthropic and OpenAI-compatible endpoints
Support for Claude Opus 4.5, Sonnet 4, and Haiku 4.5
Credit-based billing system

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