#Sonnet

Claude Sonnet 5.5 is a clear upgrade over Claude Sonnet 5, runs 30%+ faster, and costs up to 30% less for most work.

Sonnet's new Echo SE III T5 gives Macs three PCIe slots for $799.99, costing less than its larger desktop model, at the cost of no longer supporting full-length cards.

The built-in catalog (omp 18.12.6) still lists Anthropic models that are retired. Every request to them fails. Model Retired claude-3-5-sonnet-20240620 2025-10-28 claude-3-5-sonnet-20241022 2025-10...

Claude Sonnet 5 from Anthropic is now available on AI Gateway, with stronger coding and agentic performance, adaptive thinking, and effort control.

Access Claude Sonnet 5.5 through Vercel AI Gateway with the AI SDK, compatible APIs, or coding agents for coding, clearer writing, and polished documents.

You can now leverage Claude Sonnet 4's updated token context window with Vercel's AI Gateway with no other provider accounts required.

Claude Sonnet 4.5 is now available on Vercel AI Gateway and across the Vercel AI Cloud. Also introducing a new coding agent platform template.

You can now access Anthropic's newest model Claude Sonnet 4.6 via Vercel's AI Gateway with no other provider accounts required.

Five things I learned the hard way running the Anthropic API in real apps — prompt caching gotchas, 529 vs 503, idempotency, streaming drops, and when Sonnet is the wrong choice. With a free cheatsheet.

All information verified from Anthropic's official documentation as of May 2026. ...

A developer's proxy makes Claude Code usage-aware by intercepting hidden rate limit headers. Sonnet and Opus share one quota pool despite separate UI

If you're paying $200/month for an AI coding subscription in 2026, you're not buying intelligence — you're buying throttled access to it.

Last month my Claude API bill was $847. This month it's $73. Same output quality. Here's the system I...

Clear breakdown of Claude API costs: input/output tokens, model tiers, caching, and how to estimate your real monthly bill.

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Claude Haiku 4 handles classification, summarization, and extraction at 90%+ of frontier quality while costing 5x less than Opus 4.7.