Model Switcher Calculator
See how much you could save by switching to a cheaper model. Enter your current usage and compare costs across all major models.
Last updated: March 2026
Your current usage
Monthly cost with GPT-4.1
$150.00
Switch to cheaper alternatives
Sorted by cost (cheapest first). Savings shown vs your current model.
Gemini 2.0 Flash
$7.50/mo
Save $142.50 (95%)
GPT-4o mini
openai
$11.25/mo
Save $138.75 (93%)
Claude Haiku 3
anthropic
$22.50/mo
Save $127.50 (85%)
GPT-4.1 mini
openai
$30.00/mo
Save $120.00 (80%)
GPT-5 mini
openai
$33.75/mo
Save $116.25 (78%)
Gemini 2.5 Flash
$42.00/mo
Save $108.00 (72%)
o4-mini
openai
$82.50/mo
Save $67.50 (45%)
Claude Haiku 4.5
anthropic
$90.00/mo
Save $60.00 (40%)
o3
openai
$150.00/mo
Gemini 2.5 Pro
$168.75/mo
GPT-4o
openai
$187.50/mo
Gemini 3.1 Pro
$210.00/mo
Know which features are driving the cost before you switch.
PerUnit breaks down cost by customer and feature — so you can switch models where it matters and keep quality where it doesn't.
Get early access to PerUnit