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Synthetic vs What The Diff

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

USD · US · source: synthetic.new

Plan Pricing Charged by Offer type
Subscription Packs — 1 pack
USD 30 monthly

$30 /mo

Flat · $30 /mo Standalone · Fixed

What The Diff

USD · US · source: whatthediff.ai

Plan Pricing Charged by Offer type
Free — Free
Free

Free

Usage · tokens per month Standalone · Free
Pro – 200k — Pro
USD 19 monthly · USD 19 / month with annual commitment

$19 /month

Usage · tokens per month Standalone · Fixed

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Synthetic

Subscription Packs — 1 pack

Highlights

Rate Limit

500 requests/5hr

Included

Highlights

Concurrent requests per model

1

Included

Highlights

Access

Included

Highlights

Rate limits compared to Claude's $20/month plan

3x higher

Included

What The Diff

Free — Free

Highlights

Token limit

25,000 tokens per month (~10 PRs)

Included

Highlights

Repositories

Unlimited repositories

Included

Highlights

Code refactoring

Inline code refactoring

Included

Highlights

Rate limit

Rate limited

Included

Pro – 200k — Pro

Highlights

Token limit

200,000 tokens per month (~40 PRs)

Included

Highlights

Repositories

Unlimited repositories

Included

Highlights

Code refactoring

Instant code refactoring

Included

Highlights

Notifications

Slack, Webhook and Email notifications

Included

Highlights

Support

Priority email support

Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Synthetic

  1. Source
    • Subscription Packs — 1 pack: USD 30 monthly

What The Diff

  1. Source
    • Free — Free: Free
    • Pro – 200k — Pro: USD 19 monthly · USD 19 / month with annual commitment