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fix: Remove @vertex suffix from model ID for Anthropic Vertex API #5717

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fix: Remove @vertex suffix from model ID for Anthropic Vertex API #5717

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5 changes: 5 additions & 0 deletions .changeset/fix-opus-4.6-vertex.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"kilo-code": patch
---

Fix Opus 4.6 via Vertex AI 404 error by removing @vertex suffix from model ID
5 changes: 4 additions & 1 deletion src/api/providers/anthropic-vertex.ts
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Expand Up @@ -272,8 +272,11 @@ export class AnthropicVertexHandler extends BaseProvider implements SingleComple
// reasoning model and that reasoning is required to be enabled.
// The actual model ID honored by Anthropic's API does not have this
// suffix.
// The `@vertex` suffix is used to distinguish Vertex AI models but should
// be removed before sending to the API.
let cleanId = id.replace(/@vertex$/, "").replace(/:thinking$/, "")
return {
id: id.endsWith(":thinking") ? id.replace(":thinking", "") : id,
id: cleanId,
info,
betas: betas.length > 0 ? betas : undefined,
...params,
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