Model
Who uses GPT-5.6 Sol
4 people list GPT-5.6 Sol as their model, 4 more use it alongside something else. Newest evidence: Armin Ronacher, Sep 5, 2026.
Salvatore Sanfilippo
Redis evangelist; open-source programmer
HarnessClaude Code
ModelGPT-5.6 Sol
Engineer
Thibault Sottiaux
OpenAI Codex lead
HarnessCodex
ModelGPT-5.6 Sol
Works at a lab
Armin Ronacher
Engineer; creator of Flask · Earendil
Harnesspi
ModelGPT-5.6 Sol
Dan Shipper
CEO & cofounder of Every
HarnessChatGPT Codex
ModelGPT-5.6 Sol
Ships products
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Also in the mix
- Dax Raad · A portion of the team returned to Sol after evaluating Astra.
- Simon Willison · Compared directly with Astra.
- Roy · August 15 benchmark routes, both at high thinking; not a claimed current default.
- zek · Compared as a slower alternative to Gemini.