# copilot-cli v1.0.83-2 — 1.0.83-2

- Product: copilot-cli (https://whatsnew.fyi/product/copilot-cli)
- Vendor: GitHub
- Date: 2026-09-02
- Version: v1.0.83-2
- Original notes: https://github.com/github/copilot-cli/releases/tag/v1.0.83-2
- Permalink: https://whatsnew.fyi/product/copilot-cli/releases/v1.0.83-2
- Labels: Pre-release

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Custom agents can list several models in model, tried in order until one is available to you, and model-policy: required keeps model changes on that list
- **added** — Support for claude-fable-5.1
- **changed** — Linux sandboxes now restrict network egress to the configured proxy; proxy mode requires slirp4netns, util-linux 2.35+, iptables, and /dev/net/tun access

**Added**
- Custom agents can list several models in `model`, tried in order until one is available to you, and `model-policy: required` keeps model changes on that list
- Adding support for claude-fable-5.1

**Improved**
- Linux sandboxes now restrict network egress to the configured proxy; proxy mode requires slirp4netns, util-linux 2.35+, iptables, and /dev/net/tun access