Thibault Sottiaux

Works at a lab

Last updated: Aug 16, 2026

Role	OpenAI Codex lead
Earns	Works at a lab
Sources	6 cited fields · medium confidence

@thsottiaux tibo-openai

Codex (app and CLI) with GPT-5.6 Sol at a 1M-token context; also routes Sol into Claude Code through CLIProxyAPI.

“Have fun, but also know that we tuned the default carefully!” x.com

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Loadout

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Thibault Sottiaux’s loadout

Works at a lab

Harness

Codex

Leads Codex (app + CLI); also showed routing GPT-5.6 Sol into Claude Code via CLIProxyAPI ("claudex").

Model

GPT-5.6 Sol

His documented Codex example selects GPT-5.6 Sol; the post does not explicitly say this is his personal default.

Also uses

Claude Code

Pointed at GPT-5.6 Sol through CLIProxyAPI.

ToolsCLIProxyAPI

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Models

GPT-5.6 Sol

His documented Codex example selects GPT-5.6 Sol; the post does not explicitly say this is his personal default.

x.com, 2026-08 ↗

Claude Code

Pointed at GPT-5.6 Sol through CLIProxyAPI.

x.com, 2026-07 ↗

Tools

CLIProxyAPI

Used to connect Claude Code and Codex authentication before defining a claudex alias.

x.com, 2026-07 ↗

Workflow

1Route GPT-5.6 Sol into Claude Code with a short claudex alias when not using the Codex app.x.com, 2026-07

Config

~/.codex/config.toml

Documented model = gpt-5.6-sol, model_context_window = 1000000, and model_auto_compact_token_limit = 900000.