# Imagen 4 API Rate Limits, Pricing & Performance (July 2026)

- Tool: AI API Limits & Performance Matrix
- Last updated: July 2026

## TL;DR

Imagen 4 is being shut down on August 17, 2026 — do not start new integrations. Existing projects must migrate to Gemini 2.5 Flash Image before that date. Pricing is per-image ($0.02 Fast / $0.04 Standard / $0.06 Ultra), not token-based. Quotas are project-specific and shown in AI Studio; exact RPM/RPD not published. Migrate now to avoid a production outage.

## Frequently asked questions

### Is Imagen 4 still available as an API?

Yes, but only until August 17, 2026. After that date, the Imagen 4 API will be fully shut down. Do not start new integrations. If you have existing code using imagen-4.0-generate-001, migrate to the successor model before the deadline.

### What replaces Imagen 4 after the August 17, 2026 shutdown?

Google's announced successor is Gemini 2.5 Flash Image (internally known as Nano Banana). It is the recommended migration path for teams currently on Imagen 4. Check Google's official documentation for the exact API string at migration time.

### How much does Imagen 4 cost per image?

Imagen 4 uses per-image billing (not token-based): Fast tier is $0.02/image, Standard is $0.04/image, and Ultra is $0.06/image, as verified July 10, 2026. There is no published batch discount.

### What are the rate limits for Imagen 4?

Google does not publish stable RPM or RPD numbers for Imagen 4. Your active quota is project-specific and visible in the AI Studio console. Contact Google Cloud Support to request a quota increase.

### What does the 'RESOURCE_EXHAUSTED' error mean for Imagen 4?

RESOURCE_EXHAUSTED means your project has hit its quota for image generation requests. To fix it: (1) reduce request frequency, (2) request a quota increase in Google Cloud Console → IAM & Admin → Quotas, or (3) add exponential backoff to your retry logic.

### How do I migrate from Imagen 4 before the shutdown?

Update your API endpoint and model ID to the successor (Gemini 2.5 Flash Image). Test the new integration in a non-production environment before the August 17, 2026 cutoff. Teams needing help scoping the migration can reach out to RapidDev at rapidevelopers.com/contact.

### Can I still use Imagen 4 after August 17, 2026?

No. August 17, 2026 is the hard shutdown date. After that date, all API calls to Imagen 4 endpoints will fail. There is no grace period — migrate before the deadline.

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Source: https://www.rapidevelopers.com/ai-api-limits-performance-matrix/imagen-4
© RapidDev — https://www.rapidevelopers.com/ai-api-limits-performance-matrix/imagen-4