Agents & InferenceSimon Willison

DeepSeek V4 Pro 0813 (on OpenRouter)

Which summary reads better? Pick one — models revealed after.Both summaries are AI-generated.

Match the models (Optional)

Which model wrote which summary? Select a matchup mapping below before voting.

Summary A

DeepSeek V4 Pro 0813 is live via API on OpenRouter, and its three reasoning levels (low/medium/high) produce markedly different output quality—more than the usual effort-vs-latency tradeoff, meaning you'll need to tune the reasoning tier per task rather than defaulting to one. Given prior V4 Pro and Flash weights shipped openly, open weights are likely coming, so plan for self-hosting once they drop; for now benchmarks are unverified WeChat/Reddit leaks, so validate on your own evals before committing.

LinkedIn

Two AI summaries of each story, blind-voted — see today's agents & inference digest →