Model error diagnosis

Google: Gemma 3n 4B (free) | model capability unsupported

Google: Gemma 3n 4B (free) returning 400 / model capability unsupported means you should first confirm whether model ID google/gemma-3n-e4b-it:free is visible for this Google key, then separate permission, context, capability, rate limit, or route issues.

Model

google/gemma-3n-e4b-it:free

Google: Gemma 3n 4B (free)

Provider

Google

32 models in catalog

Error type

model capability unsupported

capability-unsupported

Status code

400

global model route

Model error summary

Model

google/gemma-3n-e4b-it:free

Error type

capability-unsupported

Status code

400

Read-only check. Detection data burns after 5 minutes.

What this model error usually means

Google: Gemma 3n 4B (free) returning 400 / model capability unsupported means you should first confirm whether model ID google/gemma-3n-e4b-it:free is visible for this Google key, then separate permission, context, capability, rate limit, or route issues.

Model: google/gemma-3n-e4b-it:free
Provider: Google
Status code: 400

How to prove it during checking

Read-only check. Detection data burns after 5 minutes.

List models: confirm whether google/gemma-3n-e4b-it:free is actually visible instead of guessing from the display name.
Light probe: use minimal input to verify whether Google returns the same 400, then record the error body.
Compare model facts: context 8,192, input $0.000, output $0.000.
supports max_tokens
supports response_format
supports seed
supports temperature

Next action

Google: Gemma 3n 4B (free) model capability unsupported should not end at failed. Return the next move: change model ID, add permission, reduce context, disable unsupported capability, change route, monitor, or hold listing.

Context: 8,192
Price: $0.000 / $0.000
Read-only check. Detection data burns after 5 minutes.

Open key checker

Read-only check. Detection data burns after 5 minutes.

Open models

Google: Gemma 3n 4B (free)

Open providers

Google