What are the best alternatives to @anthropic-ai/sdk?

The top alternatives to @anthropic-ai/sdk are Claude Fable 5, Gemini 3, Claude Opus 4.8, ranked by real usage data on Unfragile.

Are there free alternatives to @anthropic-ai/sdk?

Yes, 10 free alternatives to @anthropic-ai/sdk exist, including Llama 4, GPT-4o, Mistral Large.

20 alternatives ranked by real usage data. @anthropic-ai/sdk scores 31/100 — 20 tools score higher.

The official TypeScript library for the Anthropic API

20 alternatives

10 free options

20 score higher

Anthropic's 2026 flagship — strongest Claude for agents, long-horizon coding, and tool orchestration.