Claude Opus 5 now available on AI Gateway

Anthropic's Claude Opus 5 is now available on Vercel's AI Gateway, offering improvements in long-horizon agentic coding, multi-file features, and end-to-end feature work with reasoning on by default. The model supports adjustable reasoning effort from minimal to xhigh, elevated cybersecurity safeguards, and compatibility with Zero Data Retention, while AI Gateway provides model fallbacks, unified spend tracking, and access to multiple providers.

Claude Opus 5 https://vercel.com/ai-gateway/models/claude-opus-5 from Anthropic is now available on AI Gateway. Opus 5 improves on previous Opus models for long-horizon agentic coding, handling multi-file features, larger refactors, and end-to-end feature work, and completing full tasks rather than leaving stubs or placeholders. Opus 5 is effective at low and medium effort, which produce quality at a fraction of the tokens and latency of higher settings. Vision is stronger on charts, documents, diagrams, and UI replication, and Opus 5 makes effective use of tools to analyze, crop, and verify visual work. It also coordinates teams of subagents well, which suits multi-agent workflows. Reasoning is on by default. In AI SDK 7, set the reasoning effort with the top-level reasoning option, from minimal up to xhigh , or none : Like Fable 5, Opus 5 ships with elevated cybersecurity safeguards, so benign security work can occasionally trigger a safety classifier and get blocked. To add a backstop, use AI Gateway's model fallbacks. List backup models in a models array under providerOptions.gateway , and the gateway tries them in order when the primary model fails. The same option works across every AI Gateway API format. Opus 5 is compatible with Zero Data Retention https://vercel.com/docs/ai-gateway/zdr . To enable fast mode, pass speed: 'fast' in the anthropic provider options in AI SDK: Opus 5 can be served by more than one provider. To see every provider serving it, along with per-provider pricing, supported parameters, uptime, throughput, and latency, call the model endpoints API: Route your coding agent through AI Gateway to run Opus 5 with unified spend tracking, model fallbacks, and access to every model. Run vercel ai-gateway coding-agents setup to detect the agents on your machine, provision a key, and write their config. See how to set it up in Claude Code https://vercel.com/docs/ai-gateway/coding-agents/claude-code .