CallMissed Blog
Insights on AI communication, voice agents, WhatsApp automation, and the future of customer engagement.
5 min read
ComparisonMay 8, 2026
GPT-5.5 Thinking vs Instant: When to Use Each
OpenAI's GPT-5.5 line ships in two main flavors plus a Pro tier: Instant, Thinking, and Pro. They are not three different models in the old sense — they are three different reasoning modes over the GPT-5.5 family. Picking the right one is the difference between snappy answers, deep analysis, and bur…
5 min read
ArticleMay 8, 2026
DeepSeek R2: The Open-Source Reasoning Surprise
DeepSeek's R2 is the model that made open-weight reasoning a real category in 2026. Reasoning models — the variants that explicitly think before answering — were a closed-vendor club through 2025. R2 changed that: a 32B-parameter open-weight checkpoint that runs on a single 24GB consumer GPU and cle…