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DeepSeek 4.1 Flash outputting raw model tags into the conversation #51710
Description
Description
When the context surpasses 256K it seems to be either a provider/config change that makes the model to start outputting raw model tags (DSML) in the conversation making it very unusable because it stops the agent mid task.
Plugins
No response
OpenCode version
1.18.32
Steps to reproduce
- Use the model
- Fill the context up 256K
- Continue using it, it will start showing up
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Operating System
macOS
Terminal
No response
Reacted by euwbah and xAK3Dx
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github-actions commentedon Sep 27, 2026
This issue might be a duplicate of existing issues. Please check:
thdxr commentedon Oct 11, 2026
Thanks for the report! OpenCode 2.0 is now out and development is focused on V2, so we're closing issues filed against OpenCode 1. Please upgrade (
opencode upgrade --major, details: https://anoma.ly/notes/opencode-2-0), and if this is still relevant on 2.0, reopen this issue or open a new one with your 2.0 version.— from 𝕺𝖕𝖊𝖓𝕮𝖔𝖉𝖊