Codex Users Hit Tool-Call and Workspace Bugs on the New GPT-5.6 Build
The rollout of the GPT-5.6 family inside Codex is generating a cluster of bug reports, and several point at the tool-calling layer — the exact subsy…
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GPT-5.6 Preview: 1.5M Context, Agentic-First Design & Codex UltraFast
On June 12, 2026, enterprise developers using the Codex API started seeing an unfamiliar response header: X-Model-Version: kindle-alpha . It appeare…