9 AI agent tools that changed how they charge in 2026

“Is it free?” has never been a stable answer in this category, but nine tools we track changed the actual mechanics of how they charge in 2026 — not a quiet price bump, but a structural shift: a new paid layer bolted onto a free open-source core, a sales-gated tool publishing a number for the first time, an acquisition swapping a flexible credit pool for a stricter quota at a higher price, a credit meter appearing inside a sticker price that never changed, an enterprise bundle turning out to price its own compliance features separately, a “bundled into every plan” claim losing its universality for one workspace tier, and an entirely custom-quoted enterprise tier turning into two published self-serve seat prices. None of the nine announced these as a single “pricing update” post; each surfaced by re-checking the vendor’s own site against what we had on file.

What changed

Tool	Before	After	Kind of shift
Cline	Free, open-source (Apache-2.0), bring-your-own-key only	Same free core, plus an optional $9.99/month ClinePass for higher rate limits on curated models; JetBrains support moved to the paid Enterprise tier	Paid layer added on top of a free core
CrewAI	Open-source framework, free / Enterprise-custom only	Same open-source core, plus CrewAI AMP — a new managed-cloud product with a free Basic tier (50 executions/month) and custom Enterprise	New product line added alongside the free core
11x	Alice and Julian priced entirely through a sales conversation, no public figures	Growth-tier starting prices published (Alice $3,750/mo; Julian $2,417–$5,333/mo), though every tier still requires a sales call	Sales-only pricing partially opened up
Windsurf (now Devin Desktop)	Flexible monthly credit pool; Pro at $15/month	Rate-limited daily/weekly quotas (no more pooling); Pro raised to $20/month	Acquisition-driven repricing and quota restructure
GitHub Copilot	Pro/Pro+/Max marketed as flat per-seat plans, with no published credit mechanic for chat or agent mode	Same sticker prices ($10/$39/$100), but Chat, agent mode, code review, Copilot cloud agent, CLI and Apps now draw from a monthly GitHub AI Credits allowance ($15/$70/$100); only code completions and next-edit suggestions stay unlimited	Credit meter introduced inside an unchanged sticker price
n8n	Cloud Starter/Pro AI Assistant allowances of 50 and 150 credits/month	Same sticker prices (€20/€50/month), but the AI-credit allowance grew to 2,300/month (Starter) and up to 13,700/month (Pro) — roughly 45–90x larger	Existing credit meter, allowance expanded ~two orders of magnitude
Vapi	Scale plan marketed enterprise compliance (SOC 2, PCI, SSO, RBAC, HIPAA, Zero Data Retention) as one bundled tier	Same “Custom” Scale pricing, but HIPAA and Zero Data Retention are confirmed separately metered add-ons — $2,000/month and $1,000/month respectively, on top of the negotiated per-minute rate	Bundled-sounding compliance feature revealed as a priced add-on
OpenAI Codex CLI	“Bundled into every ChatGPT plan, Free through Enterprise” — no separate line item at any tier	A new $8/month “Go” tier added between Free and Plus; since June 24, 2026 new ChatGPT Business workspaces can no longer add a Codex seat (existing seats grandfathered)	New entry tier added; a universal-bundle claim loses its universality for one tier
Perplexity	Enterprise priced entirely “Custom” — no public figure at any tier	Split into two published self-serve tiers: Enterprise Pro $40/seat/month, Enterprise Max $325/seat/month (both cheaper billed annually)	A fully custom-quoted tier replaced by published self-serve seat prices

Open-source tools are adding paid layers, not removing the free one

Cline and CrewAI are both genuinely free at the core — Cline is Apache-2.0 and bring-your-own-key, CrewAI is an open-source Python framework you can self-host without paying either project a cent. Neither has monetized the core. What both did instead is build a separate, optional paid product next to it: Cline’s ClinePass gives 2–5x higher rate limits on a curated set of open-weight models for $9.99/month; CrewAI AMP is a managed cloud layer (hosted deployment, real-time tracing, a no-code builder) with its own free Basic tier and a custom Enterprise tier above that.

The buyer question this creates is subtle: “is Cline free?” is still technically yes, but it’s no longer the complete picture — Cline also quietly moved its JetBrains plugin out of the free tier and into Enterprise-only, so “free” now depends on which IDE you use, not just whether you pay for a subscription. The lesson generalizes: an open-source license tells you the core is inspectable and self-hostable, not that every feature attached to the project today will stay free tomorrow.

A sales-only pricing model cracks open — partway

11x’s Alice (AI SDR) and Julian (AI voice agent) used to have zero public numbers; every deal ran through a “talk to sales” conversation with no starting point to anchor against. That changed with published Growth-tier starting prices — $3,750/month for Alice, $2,417–$5,333/month for Julian depending on channel. That’s real progress for a buyer trying to size a budget before a call. It’s not self-serve, though: every tier, Growth included, still routes through sales rather than a checkout page, and Pro/Enterprise pricing stays entirely custom. Treat the published figure as a floor to negotiate from, not a price you can act on directly.

A “Custom”-only enterprise tier gets an actual price tag

Perplexity’s Enterprise plan used to carry a single line: “Custom,” with no published figure a buyer could anchor to before a sales conversation. Re-checking perplexity.ai/enterprise/pricing directly found it now split into two named, priced tiers — Enterprise Pro at $40/seat/month ($34/seat/month billed annually) and Enterprise Max at $325/seat/month ($271/seat/month billed annually, described as “everything in Enterprise Pro” plus higher usage limits). That’s real progress for a buyer sizing a budget: two concrete numbers instead of a “contact us” wall. It’s a further step than 11x’s case above — 11x’s Growth-tier price is still a floor gated behind a mandatory sales call at every tier, while Perplexity published full per-seat prices across its entire enterprise line, the most complete “custom → priced” conversion on this list.

An acquisition tightened the model and raised the price

Windsurf’s pricing history is the clearest case of ownership change reshaping the product. Under Cognition (which acquired Windsurf’s former Codeium team in 2025 and rebranded the editor to Devin Desktop in June 2026), the tool dropped its flexible monthly credit pool — where unused capacity could be saved for one big push — in favor of rate-limited daily and weekly quotas that reset on a schedule regardless of use, and raised the Pro plan from $15 to $20/month. Users lost flexibility and paid more for it in the same change, which is the least buyer-friendly combination on this list and drew real backlash at the time.

A credit meter can appear — or grow tenfold — without the sticker price moving at all

Cline, CrewAI, 11x and Windsurf all changed a number a buyer would notice immediately: a new fee, a new tier, a new headline price. GitHub Copilot and n8n did something quieter: neither sticker price moved, but what that price actually buys changed underneath it.

GitHub Copilot’s Pro, Pro+ and Max plans still cost $10, $39 and $100 a month, and GitHub still describes code completions and next-edit suggestions as unlimited on every paid plan — that part is unchanged and re-confirmed. What’s new is that Chat, agent mode, code review, the Copilot coding agent, CLI and Apps now draw from a monthly “GitHub AI Credits” allowance bundled into the price (1 credit = $0.01): $15/month on Pro, $70/month on Pro+, $100/month on Max. A heavy agent-mode or chat user can now exhaust that allowance before the billing cycle ends, something the old “unlimited”-flavored marketing didn’t prepare anyone for. This is a metering layer appearing where none was previously published, not a price increase.

n8n’s case is different in kind: it already had a credit-metered AI Assistant feature on its Cloud Starter and Pro tiers, at 50 and 150 credits/month respectively. Re-checking n8n.io’s pricing page found those same allowances now listed at 2,300/month (Starter) and up to 13,700/month (Pro) — confirmed via two independent placements on the same page (the FAQ copy and the per-tier feature list) agreeing with each other. Executions, concurrency and euro prices are all unchanged; only the credit budget grew, by roughly 45x on Starter and up to 90x on Pro. That reads as n8n moving an early-preview feature out of a deliberately tight budget rather than a pricing correction, but it’s still the kind of change a buyer sizing “how much AI Assistant use do I actually get” needs to know about.

Vapi’s case is a third variant: no meter appeared or grew, but a bundle turned out not to be a bundle. Vapi’s Scale plan lists “Enterprise: SOC 2, PCI, SSO, RBAC, data residency” alongside HIPAA and Zero Data Retention in one feature bullet, reading like a single compliance package included in the negotiated contract. Reading vapi.ai/pricing line by line found HIPAA and Zero Data Retention priced as separate add-ons — an additional $2,000/month and $1,000/month respectively — on top of whatever per-minute rate and volume commitment Scale customers negotiate. A healthcare or finance team budgeting off that one bullet would reasonably assume compliance was baked into their contract number; for the two features regulators actually ask about, it isn’t.

The shared lesson: a flat sticker price — or a bundle summarized in one marketing sentence — is not proof that every listed capability is unmetered or included. If a plan bundles an AI feature, or an enterprise tier bundles a compliance capability, check whether that specific piece has its own credit, quota or line-item price — and re-check periodically, since (per n8n and Vapi) that ceiling or add-on fee can move, or turn out to have existed all along, independently of the number you first budgeted against.

“Bundled into every plan” stops being universally true

OpenAI Codex CLI’s whole pitch was that it came free with a ChatGPT subscription you might already have — Free through Enterprise, no separate line item to evaluate. Two changes on OpenAI’s own pricing page broke the “every plan” half of that pitch without touching the “no separate line item” half. First, a new $8/month “Go” tier now sits between Free and Plus, giving a lighter user a cheaper entry point than Plus’s $20 — a genuine new option, not a takeaway. Second, and more consequential: since June 24, 2026, a new ChatGPT Business workspace — or an existing one that never previously added a Codex seat — can no longer add one at all. Only Business orgs with a seat already provisioned before that date keep access, grandfathered in; Enterprise remains available as its own custom, sales-led plan, so Codex CLI isn’t leaving Business entirely, but “bundled into every ChatGPT plan through Enterprise” is no longer accurate for a Business workspace signing up today.

That’s a different failure mode from the other seven tools here: nothing about the price or the credit mechanics changed for anyone already using the product. What changed is which workspace can even reach it in the first place — an access-eligibility shift a vendor’s own changelog rarely calls out, because there’s no price to announce.

What this means if you’re evaluating an agent tool’s pricing

1. Check what “free” actually covers today, not what it covered when you first read about the tool. Cline’s core has stayed free throughout, but a specific feature (the JetBrains plugin) quietly left the free tier — the license didn’t change, the feature-to-tier mapping did.
2. A published starting price on a sales-led product is a floor, not a checkout. 11x’s Growth-tier numbers are real and useful for budgeting, but don’t expect to buy at that price without a sales conversation, and don’t assume Pro/Enterprise scales linearly from it.
3. An acquisition is a pricing event, even with no announcement. Windsurf’s credit-to-quota switch and price increase came with no vendor “we’re changing pricing” post — it showed up only in the product itself and in the fine print of a changed pricing page. If a tool you depend on gets acquired, re-check its pricing page directly rather than assuming continuity.
4. A stable sticker price can still hide a metering change. GitHub Copilot’s $10/$39/$100 tiers never moved, but a new AI-credit allowance now governs chat and agent mode; n8n’s euro prices never moved, but its own AI-credit allowance grew nearly 90x. If a plan bundles any AI feature, find its specific credit or quota ceiling rather than assuming the headline price describes the whole product.
5. A bundle’s marketing sentence and its actual eligibility can quietly diverge. Vapi’s Scale-plan enterprise bullet reads as one package, but HIPAA and Zero Data Retention are separately metered line items inside it; Codex CLI’s “every ChatGPT plan” claim held right up until OpenAI cut new Business workspaces off from adding a seat. Read the specific line item, not the summary bullet, especially for compliance claims or workspace-tier eligibility.
6. “Custom” pricing can become two real numbers overnight. Perplexity’s Enterprise tier was entirely quote-only; it’s now Enterprise Pro at $40/seat/month and Enterprise Max at $325/seat/month, published directly on the vendor’s own pricing page. If a tool you’re evaluating still says “Contact us,” it’s worth re-checking periodically — vendors do eventually publish enterprise pricing once a segment matures.

FAQ

Is Cline still free? The core agent — the VS Code extension, CLI, and bring-your-own-key model access — remains free and Apache-2.0 licensed. ClinePass ($9.99/month) is an optional add-on for higher rate limits on a curated set of models, and the JetBrains plugin now requires the paid Enterprise tier; neither is required to use Cline for free with your own API key.

Can I get 11x’s Alice or Julian without talking to sales? No. Even the published Growth-tier starting prices ($3,750/month for Alice; $2,417–$5,333/month for Julian) require a sales conversation before you can buy — there is no self-serve checkout at any tier.

Why did Windsurf’s pricing change? Windsurf was acquired by Cognition and rebranded to Devin Desktop in June 2026. As part of that transition, it replaced its flexible monthly credit pool with rate-limited daily and weekly quotas and raised the Pro plan from $15 to $20/month, effective from 2026-03-19 per the vendor’s own pricing history.

Is CrewAI AMP required to use CrewAI? No. CrewAI the open-source framework is free to self-host on its own. AMP is a separate managed-cloud product with its own free Basic tier (50 workflow executions/month) and a custom Enterprise tier for teams that want CrewAI’s team to run the infrastructure.

What are GitHub Copilot’s AI Credits? A monthly usage allowance (1 credit = $0.01) bundled into each paid Copilot plan that meters Chat, agent mode, code review, the Copilot coding agent, CLI and Apps — Pro includes $15/month, Pro+ $70/month, Max $100/month. Code completions and next-edit suggestions are exempt and stay unlimited on every paid plan; sticker prices ($10/$39/$100) are unchanged.

Why did n8n’s AI-credit allowance change? n8n’s Cloud Starter and Pro tiers already metered their AI Assistant feature by monthly credits; re-verifying against the live pricing page found the allowance grew from 50 to 2,300/month on Starter and from 150 to up to 13,700/month on Pro, with sticker prices, executions and concurrency all unchanged. That reads as n8n expanding an early-preview budget, not a repricing.

Are Vapi’s HIPAA and Zero Data Retention features included in the Scale plan? No. They’re separately metered add-ons on top of the Scale plan’s negotiated per-minute rate and volume commitment: HIPAA compliance costs an additional $2,000/month and Zero Data Retention $1,000/month, confirmed directly on vapi.ai/pricing.

Can I still get OpenAI Codex CLI on every ChatGPT plan? Not on Business anymore. Free, the new $8/month Go tier, Plus ($20/month) and Pro ($100 or $200/month) all include some level of Codex access, but since June 24, 2026 new ChatGPT Business workspaces — or ones that never previously added a Codex seat — can no longer add one; only Business orgs with a pre-existing seat keep it, grandfathered in. Enterprise remains available as its own custom, sales-led plan.

Did Perplexity’s Enterprise pricing change? Yes. Enterprise used to be listed only as “Custom,” with no public figure. It’s now two published tiers: Enterprise Pro at $40/seat/month ($34/seat/month billed annually) and Enterprise Max at $325/seat/month ($271/seat/month billed annually, everything in Enterprise Pro plus higher usage limits), confirmed directly on perplexity.ai/enterprise/pricing.

Methodology & sources

Every figure above is drawn directly from each tool’s own live pricing page or vendor documentation, reflected in that tool’s listing on this index — see each linked listing for the full source citation and verification date. This is the same live-source standard applied to every fact in this index; see our methodology and how we research AI agents.

Primary sources checked directly: Cline — pricing & docs and github.com/cline/cline · CrewAI — AMP and CrewAI OSS 1.0 announcement · 11x — Alice pricing and Julian pricing · Devin Desktop and Devin pricing, quota-change history via CloudZero · GitHub Copilot — plans & pricing · n8n — pricing · Vapi — pricing · OpenAI — ChatGPT plans & pricing and flexible pricing for the Enterprise, Edu, and Business plans · Perplexity — Enterprise pricing.

To see current, dated pricing for any tool in this index, start with the index or best AI coding agents.