SlimGPT

Cut AI costs by 70% with smart prompt optimization and caching

Score: 8.0/10IndiaMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Small business owners struggle with high, accumulating costs of AI tools like ChatGPT and Midjourney that strain limited budgets without delivering proportional ROI.

Solution

SlimGPT analyzes and rewrites your prompts to use fewer tokens, caches frequent responses, and batches similar requests to minimize API calls to tools like ChatGPT and Midjourney. Small businesses connect their API keys once, set budgets, and get the same quality outputs at a fraction of the cost. It provides a simple dashboard to track savings and usage.

Target Audience

Small business owners with limited budgets relying on AI tools for operations

Differentiator

AI-powered prompt compressor that guarantees 50-70% token reduction via proprietary optimization algorithms, unlike generic trackers.

Brand Voice

friendly

Features

Prompt Optimizer

must-have20h

Automatically rewrites prompts to minimize token usage while preserving output quality

Response Caching

must-have15h

Stores and reuses AI responses for similar queries to avoid repeat API calls

Usage Dashboard

must-have12h

Real-time tracking of API spend, savings metrics, and cost forecasts

Budget Alerts

must-have8h

Email/Slack notifications when approaching spend limits

API Proxy

must-have18h

Unified endpoint to route requests through SlimGPT optimizations

Batch Processing

nice-to-have10h

Queue and batch multiple requests for efficiency

Multi-Provider Support

nice-to-have12h

Integrate ChatGPT, Midjourney, Claude simultaneously

Custom Templates

future15h

Save and share optimized prompt templates

Total Build Time: 110 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
api_keysjsonbYes
monthly_budgetintNo
created_attimestampNo

Relationships:

  • one-to-many with usages, caches

usages

ColumnTypeNullable
iduuidNo
user_iduuidNo
tokens_usedintNo
cost_savedintNo
providertextNo
timestamptimestampNo

Relationships:

  • foreign key to users.id

caches

ColumnTypeNullable
iduuidNo
user_iduuidNo
prompt_hashtextNo
responsetextNo
expires_attimestampNo

Relationships:

  • foreign key to users.id

API Endpoints

POST
/api/optimize-prompt

Optimize user prompt and return compressed version

🔒 Auth Required
POST
/api/generate

Proxy AI request through optimizations and cache

🔒 Auth Required
GET
/api/usage

Fetch user's usage stats and savings

🔒 Auth Required
PUT
/api/budget

Update user's monthly budget

🔒 Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind + shadcn/ui
Backend
Next.js API routes + OpenAI SDK
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Resend for emailsCron for cache cleanup

Build Timeline

Week 1: Core auth and DB setup

25h
  • User signup/login
  • DB schema
  • Basic dashboard

Week 2: Prompt optimizer MVP

30h
  • Prompt rewrite logic
  • API proxy
  • Test integrations

Week 3: Caching and usage tracking

25h
  • Cache system
  • Dashboard charts
  • Budget alerts

Week 4: Payments and polish

20h
  • Stripe integration
  • Landing page
  • Beta testing
Total Timeline: 4 weeks • 110 hours

Pricing Tiers

Free

$0/mo

100 requests/month

  • Prompt optimizer
  • Basic caching
  • Usage dashboard

Pro

$25/mo

None

  • Unlimited requests
  • Budget alerts
  • Multi-provider
  • Priority support

Team

$99/mo

5 users

  • All Pro + Team seats
  • Custom templates
  • Advanced analytics

Revenue Projections

MonthUsersConversionMRRARR
Month 12005%$250$3,000
Month 61,2008%$1,920$23,040

Unit Economics

$40
CAC
$360
LTV
5%
Churn
85%
Margin
LTV:CAC Ratio: 9.0xExcellent!

Landing Page Copy

Slash Your AI Bills by 70% Instantly

SlimGPT optimizes prompts, caches responses, and tracks spend so small businesses get enterprise AI power on a shoestring budget.

Feature Highlights

70% token reduction
Real-time savings dashboard
Plug & play API proxy
Budget enforcer alerts
Supports all major AI tools

Social Proof (Placeholders)

"'Saved $200/month on ChatGPT!' - Local Cafe Owner"
"'Caching alone paid for Pro tier.' - Freelancer"

First Three Customers

Post in r/smallbusiness and IndieHackers about beta access for first 10 users who share their AI spend pain; DM 5 owners from Twitter searches for 'ChatGPT too expensive'; offer free lifetime Pro for case studies.

Launch Channels

Product Huntr/SaaSTwitter #indiehackersIndieHackers forum

SEO Keywords

cheap ChatGPT alternativereduce AI costs small businessoptimize AI prompts save moneyAI usage tracker budget

Competitive Analysis

Helicone

helicone.ai
$10+/mo
Strength

Detailed analytics

Weakness

No optimization or caching

Our Advantage

Active cost reduction vs passive tracking

PromptLayer

promptlayer.com
$50+/mo
Strength

Prompt management

Weakness

Expensive, no caching

Our Advantage

Cheaper with token compression

🏰 Moat Strategy

Proprietary prompt optimization ML model trained on usage data

⏰ Why Now?

AI costs exploding post-GPT-4o, small biz adoption surging but budgets tight in 2024 recession fears

Risks & Mitigation

technicalmedium severity

Prompt optimization degrades quality

Mitigation

A/B testing with user feedback loop

marketlow severity

Users prefer direct API control

Mitigation

Transparent proxy with opt-out

executionmedium severity

API provider changes break integrations

Mitigation

Abstraction layers and monitoring

Validation Roadmap

pre-build7 days

Interview 10 small biz owners on AI spend

Success: 80% confirm pain >$50/mo

mvp14 days

Beta with 20 users, track savings

Success: Avg 40% cost reduction

launch7 days

PH launch, 500 signups

Success: 5% conversion

Pivot Options

  • Pure analytics tool
  • Enterprise compliance focus
  • Open-source model wrapper

Quick Stats

Build Time
110h
Target MRR (6 mo)
$2,000
Market Size
$500.0M
Features
8
Database Tables
3
API Endpoints
4