Restore GPT-5.6 Sol’s 372k Codex context window, or provide an opt-in setting

# Restore GPT-5.6 Sol’s 372k Codex context window, or provide an opt-in setting ### What variant of Codex are you using? Codex desktop app and/or Codex CLI with a ChatGPT subscription. * Subscription: `Pro 20x` * Codex version: `26.715.70719 ` * Platform: `Mac app Apple Silicon` * Model: `gpt-5.6-sol` ### What feature would you like to see? Please restore GPT-5.6 Sol’s original **372,000-token Codex context profile**, which provided approximately **353,400 effective tokens** under the current 95% effective-window policy. If restoring 372k as the default is not currently possible, please provide a supported per-model or per-thread option that lets users choose the 372k profile, with a clear warning about any additional usage impact. ## Summary GPT-5.6 Sol launched in Codex with: ```text Raw context window: 372,000 Effective context window: 353,400 ``` The current server-delivered profile provides: ```text Raw context window: 272,000 Effective context window: 258,400 ``` That is a reduction of **95,000 effective tokens**, or approximately **26.9%**. This is a material product regression for long-running, detail-sensitive workflows. The earlier 372k profile noticeably improved continuity and reduced the loss of important information caused by compaction. ## OpenAI’s public statements On July 12, Tibo stated that GPT-5.6 Sol’s context threshold had been: > “tuned … to be perfect at the default limit” Source: https://x.com/thsottiaux/status/2076201049

Posted by Kl-11 on Jul 21, 2026, 9:39 PM

Tags

• github (SaaS)

Related issues

• 2026 - Microsoft Office 365
• [Ubuntu] `ubuntu-latest` label will use Ubuntu 26.04 in November 2026
• Gamut mapping
• [Codex Desktop] Editing and resending a queued message triggers "App-server queued follow-up no longer exists"
• [Windows] ChatGPT 26.820.60940 fails with "invalid transport in mcp_servers.codex_app"; Beta 26.727.40816 works
• [BUG]: infinite loading of videos