Cline v4.1.21
Cline v4.1.21 was released on .
Summary
Added - New provider: ai&, an OpenAI-compatible endpoint serving open-weight models from Japan. Changed - Refreshed the model catalog to 6,386 models across 209 providers. The resolved default mode...
Release Context
- This was the 87th Cline release of 2026 tracked by Havoptic.
- It shipped 2 days after Cline v4.1.20 (September 22, 2026).
Shipped around the same time
Within 3 days of this release, other AI coding tools also shipped:
- Antigravity CLI v1.2.12 (September 27, 2026)
- Grok Build v1.0.43 (September 27, 2026)
- OpenAI Codex CLI rust-v0.157.1 (September 26, 2026)
- Grok Build v1.0.42 (September 26, 2026)
- Factory Droid v0.228.0 (September 26, 2026)
Compare Cline
- Cline vs Claude Code
- Cline vs OpenAI Codex CLI
- Cline vs Cursor
- Cline vs Gemini CLI
- Cline vs Kiro CLI
- Cline vs GitHub Copilot CLI
- Cline vs Devin Desktop
- Cline vs Antigravity CLI
- Cline vs Grok Build
- Cline vs OpenCode
- Cline vs Zed
- Cline vs Factory Droid
- Cline vs Devin
- Cline vs Lovable
- Cline vs Amp
- Cline vs GitHub Copilot in VS Code
- Cline vs Replit Agent
- Cline vs Bolt
- Cline vs v0
Release Notes
Added - New provider: ai&, an OpenAI-compatible endpoint serving open-weight models from Japan. Changed - Refreshed the model catalog to 6,386 models across 209 providers. The resolved default model changes for 19 providers that do not pin one, 11 of them to Claude Opus 5.5 (including GitHub Copilot and Vertex). If you use one of those providers without pinning a model, expect a different default. - Raised the minimum js-yaml version to 4.3.2 to pick up a security fix in the parser used to read rule and skill frontmatter. Fixed - Long replies on local models (llama.cpp, Ollama, LM Studio) that hit the output-token limit now compact the conversation and retry once instead of ending the task. These servers cap generation at whatever context is left, regardless of the output budget you set. If compaction cannot help, the existing concise-retry recovery still runs, and the partial answer is kept. - Reopening a task that failed now shows the error with the retry option, instead of presenting it as a completed task. - A command that prints nothing no longer shows a raw JSON blob like [{"query":"git add -A","result":"","success":true}] as its output. - On Windows, @-mention search results now show the right file names. Nested files such as a subfolder's README rendered as /README.md, and the same open file could appear twice. - Canceling a request while it waits to retry an empty model response now takes effect right away, instead of after the backoff finishes. Full Changelog: https://github.com/cline/cline/compare/v4.1.20...v4.1.21
Other Recent Cline Releases
- v4.1.25 (October 16, 2026)
- v4.1.24 (October 13, 2026)
- v4.1.23 (October 7, 2026)
- v4.1.19 (September 17, 2026)
- v4.1.17 (September 2, 2026)
Upgrading from v4.1.21? See all 4 releases since.
All Cline releases · All AI coding tool releases on Havoptic