# Pi v0.79.3: context window metadata fix for OpenAI models

> A patch release fixing inherited context window metadata for several OpenAI/Codex models to match the observed 272k-token Codex backend limit, preventing prompts above that limit from being silently accepted and incurring unexpected billing.

| | |
|---|---|
| **Tool** | Pi |
| **Version** | v0.79.3 |
| **Kind** | release |
| **Published** | 2026-06-13 |
| **Observed** | 2026-08-21 |
| **Significance** | 2/5 |
| **Breaking** | no |
| **Categories** | fix |

## What changed


- Fixed inherited OpenAI GPT-5.4/GPT-5.5 and OpenAI Codex GPT-5.4/GPT-5.4 mini/GPT-5.5 context window metadata to use the observed 272k-token Codex backend limit, preventing a billing hazard from prompts above Codex's accepted limit.


## Sources

- [github_release](https://github.com/earendil-works/pi/releases/tag/v0.79.3) — retrieved 2026-08-21


## Community

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Canonical: https://changelogs.info/pi/v0-79-3
Entity: https://changelogs.info/pi
Event ID: `evt_2026-06-13_pi_v0-79-3`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.