Practical writing on multi-model workflows: which frontier model to reach for, what the models actually cost, and how routing and gateways change the math.
Claude Sonnet 5 lands near Opus 4.8 on some tasks for a fraction of the price, but a new tokenizer runs about 30 percent more tokens. Here is the upgrade decision for builders, with the numbers.
Read postAnthropic's most capable model launched, got suspended by a US export-control order, and returned. Here is what Fable 5 is, what changed on the way back, and whether builders should reach for it.
Read postSame-day-verified LLM API pricing for June 2026: Claude Fable 5, GPT-5.5, Gemini 3.1 Pro, and DeepSeek V4 compared per million tokens, plus the three caveats that change the math.
Read postVercel AI Gateway gives you one API key and string model ids for hundreds of models. Here is how it works with the AI SDK, what BYOK and OIDC change, the honest tradeoffs, and who should use it.
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