Update PostHog Code copy to reflect usage-based pricing

[cleo-pleurodon]

Changes

PostHog Code moved to usage-based pricing (AI credits, no fixed subscription, $20/month free tier, $50 default billing limit, no markup on token costs). A few spots still described the old subscription model:

• src/pages/code.tsx — the "How much does it cost?" FAQ called PostHog Code a "monthly seat-based subscription" with a "Pro plan" and a "~10 tasks" free tier. Rewritten to describe usage-based AI credits, the $20/month free tier, and the $50 default billing limit, with a link to the pricing docs.
• contents/handbook/engineering/ai/ai-platform.md — status line said Pricing: TBD; now reflects usage-based credits with a free tier.
• src/pages/slack/index.tsx — reworded the Slack-app FAQ so it no longer calls Code access a "subscription".

Why: Raised in a Slack thread asking where the site still contradicts the new PostHog Code pricing doc. This aligns the marketing/handbook copy with the pricing docs.

Note: contents/handbook/engineering/ai/implementation.md mentions passing on AI costs "with a small markup" — left unchanged here because it reads as a broader AI-pricing policy statement (PostHog AI, session summaries, deep research) rather than Code-specific. Worth a separate confirmation with whoever owns AI pricing.

The in-app copy (Plan & usage tab, billing pages) lives in the PostHog monorepo, not this repo, so it is not covered by this PR.

Checklist

• I've read the docs and/or content style guides.
• Words are spelled using American English
• Use relative URLs for internal links
• I've checked the pages added or changed in the Vercel preview build
• If I moved a page, I added a redirect in vercel.json

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Created with PostHog from a Slack thread

[github-actions]

Deploy preview

Status	Details	Updated (UTC)
🟢 Ready	View preview	Jul 15, 2026 05:27PM

[github-actions]

Vale prose linter → found 10 errors, 22 warnings, 0 suggestions in your markdown

Full report → Copy the linter results into an LLM to batch-fix issues.

Linter being weird? Update the rules!

contents/handbook/engineering/ai/ai-platform.md — 10 errors, 22 warnings, 0 suggestions

Line	Severity	Message	Rule
11:191	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
20:147	warning	Capitalize 'Workflows' for PostHog's product. Use 'workflows' for the general industry concept.	PostHogBase.ProductNames
37:81	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
39:66	warning	'deduplicating' is a possible misspelling.	PostHogBase.Spelling
41:74	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
43:21	warning	'sandboxed' is a possible misspelling.	PostHogBase.Spelling
43:195	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
43:221	warning	Capitalize 'Feature Flags' for PostHog's product. Use 'feature flags' for the general industry concept.	PostHogBase.ProductNames
43:240	warning	Capitalize 'Experiments' for PostHog's product. Use 'experiments' for the general industry concept.	PostHogBase.ProductNames
49:74	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
49:80	warning	'actionability' is a possible misspelling.	PostHogBase.Spelling
61:126	warning	Use the Oxford comma before 'and' or 'or' in a list of three or more items.	PostHogBase.OxfordComma
61:188	warning	Use the Oxford comma before 'and' or 'or' in a list of three or more items.	PostHogBase.OxfordComma
83:20	warning	'Pluggable' is a possible misspelling.	PostHogBase.Spelling
98:5	warning	'PostHog AI [General availability]' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
99:199	warning	Capitalize 'Surveys' for PostHog's product. Use 'surveys' for the general industry concept.	PostHogBase.ProductNames
99:245	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
106:5	warning	'Deep research [Beta]' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
107:122	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
107:161	warning	Capitalize 'Logs' for PostHog's product. Use 'logs' for the general industry concept.	PostHogBase.ProductNames
114:5	warning	'Session summaries [Alpha]' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
115:194	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
122:5	warning	'PostHog Code [Beta]' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
123:171	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
130:5	warning	'Wizard [General availability]' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
138:5	warning	'MCP server [General availability]' heading should be in sentence case, and product names should be capitalized.	PostHogBase.SentenceCase
141:49	warning	Capitalize 'Workflows' for PostHog's product. Use 'workflows' for the general industry concept.	PostHogBase.ProductNames
157:203	error	Hi, Andy here... use an en dash ( – ) with spaces. On Mac, holding down the Option and hyphen key will give you an en dash.	PostHogBase.EnDash
171:49	warning	'dogfooding' is a possible misspelling.	PostHogBase.Spelling
172:67	warning	'denoising' is a possible misspelling.	PostHogBase.Spelling
187:20	warning	Use 'PostHog' instead of 'posthog'.	Vale.Terms
187:28	warning	Use 'AI' instead of 'ai'.	Vale.Terms

[github-actions]

Bundle report

Total JS (gzip)

6.31 MiB (+0.1 KiB / +0.0%)

Eager graph (modules shipped in each entrypoint's initial chunks)

Entrypoint	Eager size	Budget	Modules
✅ app	15.60 MiB (+0.6 KiB / +0.0%)	report-only	1945

Largest modules in the app closure

Module	Size
css ./node_modules/.pnpm/css-loader@5.2.7_webpack@5.101.3/node_modules/css-loader/dist/cjs.js??ruleSet[1].rules[8].oneOf[1].use[1]!./node_modules/.pnpm/postcss-loader@4.3.0_postcss@8.5.6_webpack@5.101.3/node_modules/postcss-loader/dist/cjs.js??ruleSet[1].rules[8].oneOf[1].use[2]!./src/styles/global.css	711.1 KiB
./src/components/Stickers/Stickers.tsx	696.4 KiB
./.cache/caches/gatsby-plugin-mdx/mdx-scopes-dir/31a094f140f119e73085d847ae81b99b.js + 2 modules	627.7 KiB
./node_modules/.pnpm/@radix-ui+react-icons@1.3.2_react@18.3.1/node_modules/@radix-ui/react-icons/dist/react-icons.esm.js	481.4 KiB
./node_modules/.pnpm/rehype-raw@7.0.0/node_modules/rehype-raw/lib/index.js + 29 modules	395.1 KiB
./node_modules/.pnpm/@posthog+icons@0.36.6_react-dom@18.3.1_react@18.3.1__react@18.3.1/node_modules/@posthog/icons/dist/posthog-icons.cjs.js	364.8 KiB
./src/hooks/useCustomers.tsx + 54 modules	355.1 KiB
./node_modules/.pnpm/@posthog+icons@0.36.6_react-dom@18.3.1_react@18.3.1__react@18.3.1/node_modules/@posthog/icons/dist/posthog-icons.es.js	354.8 KiB
./node_modules/.pnpm/react-markdown@8.0.7_@types+react@16.14.66_react@18.3.1/node_modules/react-markdown/lib/react-markdown.js + 88 modules	351.4 KiB
./node_modules/.pnpm/cloudinary-core@2.14.0_lodash@4.17.21/node_modules/cloudinary-core/cloudinary-core.js	281.9 KiB
./src/components/ProductComparisonTable/index.tsx + 120 modules	278.5 KiB
./node_modules/.pnpm/d3@7.9.0/node_modules/d3/src/index.js + 208 modules	247.4 KiB
./src/components/Pricing/PricingSlider/Slider.tsx + 87 modules	239.9 KiB
./gatsby-browser.tsx + 41 modules	239.8 KiB
./src/components/SearchUI/index.tsx + 73 modules	223.4 KiB

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Eager-graph budgets are report-only until a baseline is established. Sizes are gzip of public/**/*.js; eager size is webpack module source bytes for the modules actually shipped in the entrypoint's initial chunks (post-tree-shake).