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Gateway rejected model "claude-haiku-4-5" - Claude Code

Quick fix

Enable routing based on the API type; for 火山方舟 Responses API, use the full URL and set isFullUrl=true to prevent the path from being appended again.

Symptom

Section titled “Symptom”
Error output
Inference — Gateway rejected model "claude-haiku-4-5" (HTTP 404)

Cause

Section titled “Cause”

This error occurs in two configuration scenarios, but the root causes differ. When using GMI's `/v1/chat/completions` endpoint, routing must be enabled. When using 火山方舟 Agent Plan, CC Switch 3.16.4 treats the Base URL as a prefix and appends `/v1/responses`, turning the correct address into `.../api/plan/v3/v1/responses`; the upstream service therefore returns HTTP 404.

In the 火山方舟 scenario, the Claude Desktop configuration form also removes the `isFullUrl` flag, preventing the correct setting from being persisted through the interface. The issue confirms that entering the full Responses URL and setting `isFullUrl=true` works. The maintainer recommended upgrading to 4.0 and retrying, but the related issue did not confirm that the upgrade itself resolved the problem.

Fix

Section titled “Fix”

  1. If the provider uses the `/v1/chat/completions` path, enable routing.

  2. If using 火山方舟 Agent Plan, set the endpoint to the full URL: `https://ark.cn-beijing.volces.com/api/plan/v3/responses`.

  3. Set `isFullUrl` to `true` for this configuration to prevent CC Switch from appending `/v1/responses`; Issue #4875 reports an HTTP 200 response with this configuration.

  4. If the interface removes `isFullUrl` again after saving, do not rely on that form to persist this setting; the issue only says the db can be modified, but provides no database path or specific command.

  5. You can also upgrade to CC Switch 4.0 and test again. If the problem persists, report it again with the version, system, complete reproduction steps, and logs.

Affected Versions

Section titled “Affected Versions”
ToolClaude Code
Version受影响版本 3.16.3 - 3.16.4
PlatformsmacOS

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”

(No FAQ yet)

Section titled “Related problems”
Request exceeds the context windowNo verified solution was provided in the original post; this issue was closed as a duplicate related to catalog configuration and automatic compression.1 issues mergedFailed to deserialize the JSON bodyDeepSeek rejects conversation history after an image has been sent. Start a new conversation to recover.1 issues mergedInput should be a valid string: Codex image history 422Most related issues remain unresolved. Upgrade to cc-switch v3.20.4 and retry. If 422 persists, start a new session or roll back before the image.1 issues merged

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