DeepSeek V4 Pro + V4 Flash in the model picker

Two new thinking models are now selectable in the chat model picker, talking to DeepSeek's official API directly:

• DeepSeek V4 Pro - frontier-level reasoning with a 1M-token context window. Strong at code, math, and long multi-step tasks. A serious daily driver. Text-only.
• DeepSeek V4 Flash - the same reasoning shape, tuned for speed and high-throughput work. 1M context, text-only.

Heads-up: these models do not see images. Pick a vision-capable model (Sonnet, Gemini, GPT-4o) if your task needs to read a screenshot or a PDF.