opencode: Support interleaved_reasoning and fix DeepSeek#55574
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Merging DeepSeek with the other OpenAI-compatible models since it has no reason to be by itself anymore
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@benbrandt any chance this can be merged and cherry picked to Preview so it's part of this week's release? Having #54880 in there with broken DeepSeek support will confuse a bunch of users. Apologies for the ping! |
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/cherry-pick preview |
benbrandt
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May 5, 2026
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@benbrandt am... #54880 is in next-Preview since it was merged last week, right? |
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…erry-pick to preview) (#55777) Cherry-pick of #55574 to preview ---- OpenCode API endpoints for DeepSeek were [moved from Anthropic-compatible to OpenAI-compatible](anomalyco/opencode#24500) and DeepSeek requires interleaved reasoning enabled to work. I ran a _"rename this variable to potato"_ test and I can confirm DeepSeek V4 Flash and Pro both work now 🎉 Some other OpenCode Go models were marked [on models.dev](https://github.com/anomalyco/models.dev/tree/dev/providers/opencode-go/models) as supporting `interleaved_reasoning` so they too got that enabled. Kimi K2.5 and Kimi K2.6 continue to fail with #51743 (#55085 seems to hint at this being [an OpenCode issue](#51743 (comment))?), but all other models seem to work fine both with `interleaved_reasoning` and without it 🤷 I assume it's better to have that turned on? Again, the intersection of OpenAI Chat Completions API, different models, different inference providers, how they all work together is something I know nothing about! Self-Review Checklist: - [X] I've reviewed my own diff for quality, security, and reliability - [X] Unsafe blocks (if any) have justifying comments - [X] The content is consistent with the [UI/UX checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) - [ ] Tests cover the new/changed behavior - [X] Performance impact has been considered and is acceptable Release Notes: - OpenCode Go: use correct DeepSeek endpoints - OpenCode: add support for interleaved_reasoning Co-authored-by: Vlad Ionescu <Vlaaaaaaad@users.noreply.github.com>
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…ies#55574) OpenCode API endpoints for DeepSeek were [moved from Anthropic-compatible to OpenAI-compatible](anomalyco/opencode#24500) and DeepSeek requires interleaved reasoning enabled to work. I ran a _"rename this variable to potato"_ test and I can confirm DeepSeek V4 Flash and Pro both work now 🎉 Some other OpenCode Go models were marked [on models.dev](https://github.com/anomalyco/models.dev/tree/dev/providers/opencode-go/models) as supporting `interleaved_reasoning` so they too got that enabled. Kimi K2.5 and Kimi K2.6 continue to fail with zed-industries#51743 (zed-industries#55085 seems to hint at this being [an OpenCode issue](zed-industries#51743 (comment))?), but all other models seem to work fine both with `interleaved_reasoning` and without it 🤷 I assume it's better to have that turned on? Again, the intersection of OpenAI Chat Completions API, different models, different inference providers, how they all work together is something I know nothing about! Self-Review Checklist: - [X] I've reviewed my own diff for quality, security, and reliability - [X] Unsafe blocks (if any) have justifying comments - [X] The content is consistent with the [UI/UX checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) - [ ] Tests cover the new/changed behavior - [X] Performance impact has been considered and is acceptable Release Notes: - OpenCode Go: use correct DeepSeek endpoints - OpenCode: add support for interleaved_reasoning
This was referenced May 8, 2026
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OpenCode API endpoints for DeepSeek were moved from Anthropic-compatible to OpenAI-compatible and DeepSeek requires interleaved reasoning enabled to work. I ran a "rename this variable to potato" test and I can confirm DeepSeek V4 Flash and Pro both work now 🎉
Some other OpenCode Go models were marked on models.dev as supporting
interleaved_reasoningso they too got that enabled. Kimi K2.5 and Kimi K2.6 continue to fail with #51743 (#55085 seems to hint at this being an OpenCode issue?), but all other models seem to work fine both withinterleaved_reasoningand without it 🤷 I assume it's better to have that turned on? Again, the intersection of OpenAI Chat Completions API, different models, different inference providers, how they all work together is something I know nothing about!Self-Review Checklist:
Release Notes: