No infrastructure setup. No coding required. Upload your data and PromptMax handles the rest — at any scale.
Prepare a CSV with the data you want to process — one item per row. Upload it to PromptMax in seconds. Your file is stored securely and processed privately.
Write your instructions in plain English, telling the AI exactly what to do with each row. Choose your model and temperature. Pre-filled settings guide you so you can get started straight away.
PromptMax processes your batch in the background. When the batch is ready you receive an email notification. Log back in to download the AI-generated responses to every row in your file.
Designed for professionals and teams that use AI intensively, need to stay in control of the prompt and whose focus is output quality, not infrastructure.
Submit a single batch job with up to 50,000 rows. Every row gets its own AI-generated response, returned in the same CSV format you uploaded.
Currently live: Google Gemini 2.5 Pro, 2.5 Flash, and 2.5 Flash Lite. Each optimised for different balances of quality, speed, and cost.
See an estimated cost before you dispatch. Final charge is calculated precisely after the job completes, based on actual tokens used.
Your files are processed on Google Cloud and never used to train AI models. Each job is isolated — your data is never shared between accounts.
Nothing to install, configure, or maintain. PromptMax runs entirely in your browser — no code, no servers, no DevOps.
Top up credits and only pay for what you process. No subscriptions, no monthly minimums, no lock-in.
Every job you run is saved to your dashboard. Check status, review costs, and re-download results any time.
Get notified by email when your batch is ready. No need to stay logged in while your job runs.
Save your batch job instructions and reuse them across jobs. Build a library of prompts that work and run them with one click.
OpenAI, Anthropic and other providers coming to PromptMax. Run your batches on the models that work best for you.
Not sure which model to use? PromptMax will analyse your prompt and data and recommend the best model for your batch.
A second model reviews and improves the output of every row before you download. Built-in quality assurance at scale.
Purpose-built for marketing operations, data teams, and agencies running AI at volume.
Generate hundreds of creative variants from a product feed. Feed your SKU CSV, write one prompt, get a unique ad back for every row.
Turn sparse product data into rich, SEO-optimised descriptions. Run your entire catalogue overnight without touching a single API.
Tag, score, and classify customer feedback or reviews in bulk. Structured output returned row-for-row in the same format you sent.
Run AI production for multiple clients from one dashboard. Separate jobs, separate billing, one platform.
One journey. Start free, scale when ready, go enterprise when you need more.
Start with £5 credit. No card needed.
Top up credits and run at full scale.
Custom setup for teams spending £1,000+/month.
| Model | Est. cost per 1,000 rows | Best for | vs. standard API price |
|---|---|---|---|
| Gemini 2.5 Pro | ~£0.80 | Complex reasoning, highest quality output | 25% cheaper |
| Gemini 2.5 Flash | ~£0.20 | Balanced quality and speed | 25% cheaper |
| Gemini 2.5 Flash Lite | ~£0.06 | High volume, cost-sensitive tasks | 25% cheaper |
Estimates based on ~500 input tokens and ~200 output tokens per row. Actual cost depends on prompt and response length. PromptMax passes 25% savings on to you by leveraging Google's batch API discount — you always pay less than standard API rates.
Join the early access programme. First 50 teams get £20 in free credits.
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