FITS vs GPT Sheets: The Real Cost Comparison (2025)
If you're running 10,000+ AI calls per month in Google Sheets, you're probably bleeding money and don't even know it. Here's the math on why switching to FITS can save you $500+/month—and how to calculate your own ROI in under 5 minutes.
Get the Cost Calculator Template
Auto-calculate monthly costs for GPT-4o, Claude, and Gemini across your workflows
The Hidden Cost Problem
"GPT for Sheets" is the most popular AI add-on for Google Sheets—and for good reason. It works. But most users have no idea how much it actually costs until the bill arrives.
Real Example from a FITS User:
"I was generating product descriptions for 500 SKUs using GPT-4o. My monthly OpenAI bill hit $240. Switched to FITS with Gemini Pro and it dropped to $68. Same quality. 71% cheaper."
The difference? Model selection and pricing transparency. GPT Sheets locks you into OpenAI's pricing. FITS lets you choose the best model for each task—and shows you exactly what it costs.
2025 Model Pricing: The Raw Numbers
Price Per 1 Million Tokens (Input + Output Average)
| Model | Input (per 1M tokens) | Output (per 1M tokens) | Avg Cost |
|---|---|---|---|
| GPT-4o | $2.50 | $10.00 | $6.25 |
| Claude 3.5 Sonnet | $3.00 | $15.00 | $9.00 |
| Gemini 1.5 Pro | $1.25 | $5.00 | $3.13 |
Notice anything? Gemini Pro is 50% cheaper than GPT-4o and 65% cheaper than Claude Sonnet. For most content workflows—product descriptions, blog summaries, email generation—Gemini performs nearly identically to GPT-4o.
But GPT Sheets doesn't give you that choice. You're locked into OpenAI. FITS supports all three—plus models from Anthropic, Google, and Mistral.
6 Real Workflows: Cost Breakdown
Let's calculate actual costs for common tasks. These numbers assume average token usage based on 100+ real FITS users.
1. Blog Post Summarization (500/month)
Average Input Tokens
800
Average Output Tokens
150
| Model | Monthly Cost | Annual Cost |
|---|---|---|
| GPT-4o | $1.20 | $14.40 |
| Claude Sonnet | $1.72 | $20.64 |
| Gemini Pro (FITS) | $0.60 | $7.20 |
FITS Savings: $7.20/year (50% less than GPT-4o)
2. Product Description Generation (2,000/month)
Average Input Tokens
200
Average Output Tokens
100
| Model | Monthly Cost | Annual Cost |
|---|---|---|
| GPT-4o | $3.20 | $38.40 |
| Claude Sonnet | $4.60 | $55.20 |
| Gemini Pro (FITS) | $1.04 | $12.48 |
FITS Savings: $25.92/year (67% less than GPT-4o)
3. Customer Support Auto-Reply (10,000/month)
Average Input Tokens
300
Average Output Tokens
200
| Model | Monthly Cost | Annual Cost |
|---|---|---|
| GPT-4o | $65.00 | $780.00 |
| Claude Sonnet | $93.40 | $1,120.80 |
| Gemini Pro (FITS) | $21.70 | $260.40 |
FITS Savings: $519.60/year (67% less than GPT-4o)
Combined Annual Savings
If you're running these three workflows at the volumes above:
GPT-4o Annual Cost
$833
FITS Annual Cost
$280
Your Savings
$553
Smart Model Selection: When to Use What
FITS lets you choose the right model for each task. Here's the decision framework:
Use Gemini Pro When:
- ✓ High-volume tasks (1,000+ calls/month)
- ✓ Simple transformations (summarize, extract, categorize)
- ✓ Budget is a concern
- ✓ Quality is "good enough" (90% as good as GPT-4o)
Use GPT-4o When:
- ✓ Creative writing (ad copy, blog intros, storytelling)
- ✓ Low-volume, high-stakes tasks
- ✓ Nuanced tone/voice is critical
- ✓ Complex reasoning or multi-step logic
Use Claude Sonnet When:
- ✓ Long-form content (2,000+ word articles)
- ✓ Code generation or technical writing
- ✓ Detailed analysis or research synthesis
- ✓ You need the absolute best output (cost is secondary)
Calculate Your Own ROI in 5 Minutes
- Download the Cost Calculator Template (above): It includes 6 pre-built workflows with formulas
- Replace the example data: Add your actual task types and monthly volumes
- Let the formulas calculate costs: See monthly and annual costs for GPT-4o, Claude, and Gemini
- Compare to your current bill: Check your OpenAI dashboard for actual usage
- Decide: If FITS saves you $50+/month, it's a no-brainer
Ready to Cut Your AI Costs by 50%?
Download the Cost Calculator Template and see exactly how much FITS can save you. Includes auto-calculating formulas for GPT-4o, Claude Sonnet, and Gemini Pro.
What's Inside:
- ✓ Ready-to-use Google Sheets template
- ✓ Pre-configured FITS formulas
- ✓ Example data and use cases
- ✓ Instant setup (just upload & go)
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The Bottom Line
GPT for Sheets is a solid tool. But if you're processing more than 1,000 AI calls per month, you're probably overpaying.
FITS gives you:
- Model flexibility (GPT-4o, Claude, Gemini, Mistral)
- Transparent pricing (see costs in real-time)
- 50-70% cost savings for most workflows
- Identical quality for 90% of tasks
Start with the calculator template. Run the numbers. If FITS saves you money, switch. If not, stick with GPT Sheets. But at least you'll know for sure.