Cursor / Cursor

Cursor IDE 'AI Model Not Found — Model name is not valid block'

Fix Cursor IDE model loading error caused by broken auto-mode model mapping in version 2.4.7+; ghost models fail to load Includes evidence for Cursor troubleshooting demand.

Source-backed Last updated May 18, 2026 1 source Needs local verification

Category: Cursor
Error signature: AI Model Not Found: Model name is not valid block
Quick fix: Compare the failing environment with a known working setup, then change one configuration value at a time.
Updated: May 18, 2026
Verification status: Source-backed
Evidence: 1 public source URL

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for Cursor, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

AI Model Not Found: Model name is not valid block is a Cursor failure pattern reported for developers trying to fix cursor ide model loading error caused by broken auto-mode model mapping in version 2.4.7+; ghost models fail to load. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

dredyson.com detailed guide documents specific error 'AI Model Not Found - Model name is not valid block' triggered by Cursor 2.4.7+ Auto Mode attempting to load non-existent models from broken autoModels.json config. Affects paying Cursor subscription users unable to use AI coding features. DEBUG logs show ModelLoader attempting to load 'block-v2-32k' which doesn't exist in registry. Category: Cursor per mapping rules. Not a duplicate of existing 'model not available' — this is a distinct config corruption variant.

Common causes

dredyson.com detailed guide documents specific error 'AI Model Not Found - Model name is not valid block' triggered by Cursor 2.4.7+ Auto Mode attempting to load non-existent models from broken autoModels.json config. Affects paying Cursor subscription users unable to use AI coding features. DEBUG logs show ModelLoader attempting to load 'block-v2-32k' which doesn't exist in registry. Category: Cursor per mapping rules. Not a duplicate of existing 'model not available' — this is a distinct config corruption variant.

Quick fixes

Confirm the exact error signature matches AI Model Not Found: Model name is not valid block.
Check the Cursor account, local tool state, and provider configuration involved in the failing workflow.
Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

Verify the command, editor, extension, or API client that produced the error.
Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

Capture the exact error message and the command, editor action, or request that triggered it.
Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
Review the source evidence below and compare it with your environment.
Apply one change at a time and rerun the smallest failing action.
Keep the working fix documented for the team or deployment environment.

How to prevent it

Keep provider/tool configuration documented.
Record non-secret diagnostics such as tool version, provider name, model name, and command path.
Add a lightweight check before CI or production workflows depend on the tool.

Diagnostic flow for this page

Match AI Model Not Found: Model name is not valid block exactly before applying the quick fix.
Compare the failing environment with Cursor versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does AI Model Not Found: Model name is not valid block mean in Cursor?

AI Model Not Found: Model name is not valid block indicates the workflow described by "Cursor IDE 'AI Model Not Found — Model name is not valid block'" failed in a Cursor context. Start by confirming the exact signature and the component that emitted it.

What should I check first for AI Model Not Found: Model name is not valid block?

Check whether this cause matches your environment: dredyson.com detailed guide documents specific error 'AI Model Not Found - Model name is not valid block' triggered by Cursor 2.4.7+ Auto Mode attempting to load non-existent models from broken autoModels.json config. Affects paying Cursor subscription users unable to use AI coding features. DEBUG logs show ModelLoader attempting to load 'block-v2-32k' which doesn't exist in registry. Category: Cursor per mapping rules. Not a duplicate of existing 'model not available' — this is a distinct config corruption variant.

Is the AI Model Not Found: Model name is not valid block guidance source-backed?

The "Cursor IDE 'AI Model Not Found — Model name is not valid block'" page is labeled source-backed. It has 1 public source URL from dredyson.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for AI Model Not Found: Model name is not valid block?

For "Cursor IDE 'AI Model Not Found — Model name is not valid block'", avoid applying "Compare the failing environment with a known working setup, then change one configuration value at a time." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging AI Model Not Found: Model name is not valid block?

For "Cursor IDE 'AI Model Not Found — Model name is not valid block'", collect the failing Cursor command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.