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Connect Gemini Enterprise Agent Platform to Phersa

Phersa runs Nano Banana 2 and Gemini Omni 1.1 Flash through your own Google Cloud service account on Gemini Enterprise Agent Platform, formerly Vertex AI. Google bills your Google Cloud project at its published rates, and Phersa adds no markup.

Create your Google Cloud service account

console.cloud.google.com/iam-admin/serviceaccounts Open
$300 Free Trial

Start with $300 in free Google Cloud credit

New Google Cloud customers get $300 in free credit for 90 days, and Agent Platform bills to your Google Cloud project. Set it up yourself with Google's Free Trial, or email us for a step-by-step setup guide.

Start the Google Cloud Free Trial Email support@phersa.com for the setup guide

Google's Free Trial terms apply: it is for people who have never paid for Google Cloud, Google Maps Platform or Firebase and have not had a Free Trial before. A payment method is required, with no automatic charges, and unused credit ends after 90 days. The credit cannot pay for Gemini API use in Google AI Studio, trial accounts cannot request quota increases, and Google does not list Nano Banana 2 or Gemini Omni 1.1 Flash by name.

Prices

Agent Platform models in Phersa and what they cost

Model Setting Price
Nano Banana 2 Up to 14 reference images 1K $0.067
2K $0.101
4K $0.151
Gemini Omni 1.1 Flash 3–10 s clipsUp to 10 reference images 720p · 8 s clip $0.808 ($0.101/s × 8s)
1080p · 8 s clip $1.216 ($0.152/s × 8s)
4K · 8 s clip $2.432 ($0.304/s × 8s)
  • Per-second video prices are shown for an 8-second clip.
Compare

Agent Platform vs other providers, model by model

Each model's price on Agent Platform next to the cheapest other providers Phersa supports. Video is priced for an 8-second clip without reference images.

Nano Banana 2 on Agent Platform vs other providers

Provider 1K2K4K
Agent Platform $0.067 $0.101 $0.151
Kie 8 creditsLowest $0.04 12 creditsLowest $0.06 18 creditsLowest $0.09
WaveSpeedAI $0.07 $0.105 $0.14

Kie is cheapest at 1K, 2K and 4K: $0.04, $0.06 and $0.09, vs $0.067, $0.101 and $0.151 on Agent Platform.

Also on Google AI Studio, fal, Atlas Cloud and Krea, at the same or higher prices.

Gemini Omni 1.1 Flash on Agent Platform vs other providers

Provider 720p · 8 s1080p · 8 s4K · 8 s
Agent Platform $0.808 $0.101/s × 8s $1.216 $0.152/s × 8s $2.432 $0.304/s × 8s
Kie 105 creditsLowest $0.525 105 creditsLowest $0.525 189 creditsLowest $0.945
fal, WaveSpeedAI and Krea $0.80 $0.10/s × 8s $1.20 $0.15/s × 8s $2.40 $0.30/s × 8s
Atlas Cloud $0.792 $0.099/s × 8s $1.152 $0.144/s × 8s $2.232 $0.279/s × 8s

Kie is cheapest at 720p, 1080p and 4K for an 8-second clip: $0.525–$0.945, vs $0.808, $1.216 and $2.432 on Agent Platform.

Also on Google AI Studio, at the same or higher prices.

Setup

How to connect Agent Platform to Phersa

phersa.com/gemini-enterprise-agent-platform

  1. Step 1 Set up a Google Cloud project

    Sign in to the Google Cloud console with a billing account, such as a Free Trial, and pick or create a project. Enable the Agent Platform API (aiplatform.googleapis.com) on that project.

    Enable the Agent Platform API →

  2. Step 2 Create a service account

    In IAM & Admin, open Service accounts and create one. Grant it the Agent Platform User role (roles/aiplatform.user).

    Open Service accounts →

  3. Step 3 Create a JSON key

    Open the service account, go to Keys, add a key and choose JSON. Google downloads a key file; keep it private.

  4. Step 4 Add it in Phersa

    In Phersa, open Settings, go to API keys and choose Gemini Enterprise Agent Platform (Vertex AI). Paste the JSON key, enter your project ID, pick a region and click Save & verify.

  5. Step 5 Let Phersa check it

    Phersa creates a short-lived Google access token from the service account and makes a test call to Agent Platform in your region. Credentials Google rejects are not stored, and saved credentials are encrypted.

  6. Step 6 Generate

    In the app, pick Nano Banana 2 or Gemini Omni 1.1 Flash on Agent Platform. You see the cost in dollars before you generate, such as $0.067 for a 1K Nano Banana 2 image.

MCP server details

  • Provider keys are added in Phersa Settings only. The Phersa MCP server cannot read, add or change them.
  • settings-keys-status shows which providers, including Agent Platform, are connected.
  • Agent Platform credentials are a service account JSON key, a project ID and a region.
  • jobs-create defaults to dry_run=true and returns a plan without spending. dry_run=false starts a real generation that spends the user's Google Cloud project.
  • Full MCP guide: phersa.com/mcp
On Agent Platform

What is different about Agent Platform in Phersa

  • Gemini Enterprise Agent Platform is Google Cloud's new name for Vertex AI, and a different product from the Gemini Enterprise app for employees. In Phersa it runs Nano Banana 2 and Gemini Omni 1.1 Flash; for GPT Image 2.5 Sunburst, Grok Imagine Image 2.0 or Grok Imagine Video 1.5, connect another provider.
  • It connects with a Google Cloud service account instead of a single API key: a JSON key, a project ID and a region. Google AI Studio runs the same models at the same prices with one API key. See Google AI Studio
  • Phersa sends Nano Banana 2 and Gemini Omni 1.1 Flash to Google's global endpoint, whichever region you pick; the region is used to check your credentials. The prices shown are Google's global rates.
  • Google bills by output tokens. Nano Banana 2 image output is $60 per million tokens: $0.067, $0.101 and $0.151 for a 1K, 2K and 4K image. Input tokens are billed on top.
  • Gemini Omni 1.1 Flash is in Preview on Agent Platform. Video output is $17.50 per million tokens: $0.101, $0.152 and $0.304 per second at 720p, 1080p and 4K, for 3 to 10 second clips with up to 10 reference images. Thinking tokens are billed on top.
  • Google Cloud has no balance Phersa can read, so track spend and credit in the Google Cloud console.

Agent Platform questions

What is Gemini Enterprise Agent Platform?

Gemini Enterprise Agent Platform, formerly Vertex AI, is Google Cloud's platform for developers to build, scale, govern and optimize AI agents and use models such as Gemini. It bills through a Google Cloud project. It is a different product from the Gemini Enterprise app, Google's AI assistant for employees.

Visit Agent Platform on Google Cloud ↗

How much does Nano Banana 2 cost on Agent Platform?

On Agent Platform, Nano Banana 2 costs $0.067 for a 1K image, $0.101 for 2K and $0.151 for 4K at Google's global output rate. Input tokens add a little on top.

Does Phersa charge extra on top of Google Cloud?

No. Generations bill to your own Google Cloud project at Google's published rates, and Phersa adds no markup. The Phersa plan is a separate $99 per month.

See Phersa pricing →

Does Agent Platform have a free tier or free credits?

New Google Cloud customers get $300 in Free Trial credit for 90 days. Google lists no always-free allowance for Gemini image or video generation, and does not name Nano Banana 2 or Gemini Omni 1.1 Flash under the trial. Terms can change.

Check the Google Cloud Free Trial terms ↗

Can I use the $300 Google Cloud free credit with Phersa?

New Google Cloud customers get $300 in free credit for 90 days, and Agent Platform bills to your Google Cloud project. Trial accounts cannot request quota increases, and the credit cannot pay for Google AI Studio. Email support@phersa.com for a setup guide.

See the $300 offer →

How do I connect Vertex AI (Agent Platform) to Phersa?

Enable the Agent Platform API on a Google Cloud project, create a service account with the Agent Platform User role and download a JSON key. In Phersa, open Settings, go to API keys, choose Gemini Enterprise Agent Platform (Vertex AI), paste the key, enter the project ID and pick a region.

See the setup steps →

Which role does the service account need?

Agent Platform User (roles/aiplatform.user). Google renamed it from Vertex AI User. Creating the JSON key itself needs permission to manage service account keys on the project.

Why can't I create a service account key?

Some Google Cloud organizations block key creation with the policy iam.disableServiceAccountKeyCreation. Ask your organization admin to allow keys for the project, or use a project outside that organization.

Should I use Agent Platform or Google AI Studio?

Both run the same models at the same prices in Phersa. Google AI Studio needs only an API key. Agent Platform uses a service account on your Google Cloud project, which suits teams already on Google Cloud and people using the $300 Free Trial, since that credit does not cover Google AI Studio.

See Google AI Studio →

Is Agent Platform cheaper than Kie for Gemini Omni 1.1 Flash?

No. Kie is cheaper at every setting (Kie vs Agent Platform): $0.525 vs $0.808 at 720p, $0.525 vs $1.216 at 1080p and $0.945 vs $2.432 at 4K. Prices are for an 8-second clip.

See Kie prices →

What do “Credentials rejected” and “Model not available on this project” mean?

“Credentials rejected” means Google refused the service account: enable the Agent Platform API and grant the Agent Platform User role on the project. “Model not available on this project” means Google could not find the model for your project; check that the model is available to it in Agent Platform.

Is my service account key safe in Phersa?

Phersa tests the credentials with Google before saving them, stores them encrypted and uses them only for generation. AI agents connected over MCP cannot read or change them. Google recommends handling service account keys carefully, so create a dedicated service account with only the Agent Platform User role, and remove the credentials in Settings to delete them permanently.