Error 404 model not found: pick the right model ID for Claude Code, Codex, Cline

Error 404 usually reads model not found, Invalid model name or 404 Not Found.

model not found / Invalid model name

Cause

The model ID in your configuration doesn't match RocketKey's model list (typo, missing suffix, or a display name instead of the ID).

Fix

Open the Models page, click the copy button next to the model ID and paste it unchanged into your tool's configuration.

Model no longer offered

Cause

The provider retired the model or it was removed from the list.

Fix

Pick a replacement from the same family on the Models page.

404 Not Found on every request

Cause

Wrong base URL: a missing or extra /v1.

Fix

Claude Code uses the base URL without /v1; Codex, Cline and Cursor use it with /v1. See each tool's guide.

Model ID per tool

• Claude Code: the ANTHROPIC_DEFAULT_SONNET_MODEL variable (or _OPUS_, _HAIKU_). Claude models only. See the Claude Code guide.
• Codex: the model = "…" line in ~/.codex/config.toml. See the Codex guide.
• Cline: the Model ID field of the OpenAI Compatible provider. See the Cline guide.