SaaS & AI pricing, decoded
Know exactly what your software stack costs.
StackPricing is an independent SaaS and AI pricing comparison platform. Usage-based pricing is built to be hard to compare — per-token, per-subscriber, per-send — so we re-price every tool at your numbers and rank them cheapest first, and the real monthly cost stops hiding behind a slider.
Four calculators
Pick your category AI model APIs Priced per token, in and out. GPT-5.6, Claude, Gemini, Grok, Kimi, Qwen, DeepSeek and more. 30 models → Newsletter & email tools Priced per subscriber. Kit, beehiiv, MailerLite, ActiveCampaign, Mailchimp and more. 11 tools → Transactional email / SMTP APIs Priced per email sent. Amazon SES, SendGrid, Postmark, Resend, Mailgun and more. 7 tools → SMS marketing tools Priced per text sent. Twilio, Klaviyo SMS, SimpleTexting, SlickText and more. 7 tools →
Data study The State of AI API Pricing in 2026 A 30-model analysis: a 147× spread that never shrinks with scale, the mixes where the cheapest model flips, and cache discounts that vary 8×. → Price tracker The AI & email pricing change log Price hikes, five-fold cuts, shrinking free tiers — dated and documented. Get alerted before the next one costs you. → Data study The State of Email Pricing in 2026 A 11-tool price analysis: the spread, the shrinking free tiers, and how the cheapest tool flips as you scale. → Awards · 2026 The StackPricing Value Awards Winners computed from verified pricing data — not sponsored, never pay-to-play. →
Recently repriced
Full change log →AI model APIs
30 models-
GPT-5.6 Sol Pricing - GPT-5.6 Terra Pricing
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Claude Fable 5 Pricing - Claude Opus 5 Pricing
- Claude Opus 4.8 Pricing
- Claude Sonnet 5 Pricing
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Gemini 3.1 Pro Pricing - Gemini 3.5 Flash Pricing
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Grok 4.6 Pricing - Grok 4.5 Pricing
- Grok 4.3 Pricing
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DeepSeek V4 Pro Pricing -
Mistral Medium 3.5 Pricing - Mistral Large 3 Pricing
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Kimi K3 Pricing - Kimi K2.6 Pricing
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MiniMax M3 Pricing -
Qwen3-Max Pricing - Qwen-Plus Pricing
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GLM-5.2 Pricing - GLM-4.7 Pricing
Newsletter & email platforms
11 tools-
beehiiv Pricing Alternatives -
AWeber Pricing Alternatives -
MailerLite Pricing Alternatives -
GetResponse Pricing Alternatives -
Kit (ConvertKit) Pricing Alternatives -
Mailchimp Pricing Alternatives -
ActiveCampaign Pricing Alternatives -
EmailOctopus Pricing Alternatives -
Flodesk Pricing Alternatives -
Constant Contact Pricing Alternatives -
Moosend Pricing Alternatives
