Batch AI processing, no code

The batch API,
without the API

You already know batch processing is the cheap way to run AI at scale. PromptMax gives you the batch discount without the engineering — upload a spreadsheet, write one prompt, and run it across every row. No API keys, no scripts, no pipelines to maintain.

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14 models · No code · Start with free credit, no card needed
The trade-off, gone

Same batch savings. None of the plumbing.

Calling a provider's batch API yourself means building and babysitting a pipeline. PromptMax does that part for you and passes the discount straight through.

Rolling your own

  • Write upload, polling and parsing code per provider
  • Manage API keys, quotas and retries
  • Reformat results back into a usable file
  • Re-do it all for each model you want to compare

With PromptMax

  • Upload a spreadsheet, write one prompt
  • Pick from 14 models — switch any time
  • Get a finished spreadsheet back, columns intact
  • Pay as you go, ~25% under standard API pricing
How it works

Three steps, no code

1

Upload your spreadsheet

Drag in a CSV — one item per row. Single column or many; PromptMax handles the formatting.

2

Write one prompt

Describe the task once in plain language. It is applied to every row, consistently.

3

Run the batch job

Choose a model, test the first 10 rows free, then run the file. Download the completed spreadsheet.

Why PromptMax

Built for running AI at scale

14 models, one place

Gemini, Claude, GPT and Grok side by side. Compare them on your own data before you commit to one.

Up to 50,000 rows per run

Process an entire catalogue, page list or dataset in a single job. Output keeps all your original columns.

25% cheaper than standard APIs

The batch discount, passed straight to you — without the cost of building the pipeline yourself.

Your data stays private

Files are isolated to your account, never shared with other users, and never used to train AI models.

Questions

Good to know

Do I need to use a batch API or write code?
No. PromptMax runs on top of the providers' batch APIs so you don't have to. Upload a spreadsheet, write one prompt, choose a model — no API keys, scripts or pipelines.
Which models can I use?
14 models across Google Gemini, Anthropic Claude, OpenAI GPT and xAI Grok. Test the first 10 rows free on any model before running the full job.
How does pricing compare to calling the API myself?
You pay roughly 25% below standard API pricing because we pass on the batch discount — and you skip the engineering time to build and maintain a batch pipeline. Pay as you go, no subscription.
How large a file can I process?
Up to 50,000 rows in a single run. Your output keeps all your original columns with the AI responses added at the end.

Run your first batch job free

Upload a spreadsheet, write a prompt, and see it work on the first 10 rows.

Get started free →
Start with free credit · No card needed