Document unified concurrency limit (CUS-275)

Consolidate on-demand and browser-pool concurrency limits into a single
concurrency limit across browsers.create() and pool acquire in pricing,
projects, and CLI reference docs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: Jayko001

info/pricing.mdx

@@ -58,15 +58,18 @@ Auth sessions are fast (typically 5-30 seconds each). Kernel monitors session he
 
 ## Concurrency limits
 
+Kernel enforces a single concurrency limit covering all browsers you run at once — whether created on demand with `browsers.create()` or reserved in a [browser pool](/browsers/pools/overview). Your full limit is available to either API in any mix.
+
 | Feature | Developer (free + usage) | Hobbyist ($30 / mo + usage) | Start-Up ($200 / mo + usage) | Enterprise |
 | --- | --- | --- | --- | --- |
-| Reserved browsers ([browser pools](/browsers/pools/overview)) | 0 | 0 | 100 | Custom |
-| On-demand browsers | 5 | 10 | 50 | Custom |
+| Concurrent browsers | 5 | 10 | 150 | Custom |
 | App invocations | 5 | 10 | 50 | Custom |
 | App invocations (per-app) | 5 | 10 | 20 | Custom |
 | Managed auth health check interval | N/A | 1 hour minimum | 20 minutes minimum | Custom |
 
-> Note: Browsers in [Standby Mode](/browsers/standby) count against on-demand concurrency limits.
+> Note: Reserved capacity in a [browser pool](/browsers/pools/overview) counts toward your concurrency limit whether or not the browsers are currently acquired — a pool sized to 40 browsers uses 40 of your limit. Browser pools are available on Start-Up and Enterprise plans.
+
+> Note: Browsers in [Standby Mode](/browsers/standby) count against your concurrency limit.
 
 > Note: Limits are org-wide by default unless stated otherwise. `Managed auth profiles` refer to profiles with active auth connections that Kernel maintains using your stored [Credentials](/auth/credentials) or [1Password connection](/integrations/1password). A single profile can have multiple auth connections (one per domain) — see [Profiles](/auth/profiles#multiple-auth-connections-per-profile) for details.
 

info/projects.mdx

@@ -320,9 +320,9 @@ if err := client.Projects.Delete(ctx, "proj_abc123"); err != nil {
 
 ## Concurrency Limits
 
-Kernel caps how many browser sessions can run at once, at two levels:
+Kernel caps how many browsers can run at once, at two levels. A single limit covers both on-demand browsers (`browsers.create()`) and [browser pools](/browsers/pools/overview) — standalone sessions and reserved pool capacity count against the same cap.
 
-- **Organization limit** — the total concurrent sessions allowed across your whole organization, determined by your plan. Every session counts against it.
+- **Organization limit** — the total concurrent browsers allowed across your whole organization, determined by your plan. Every browser session and every reserved pool slot counts against it.
 - **Per-project limits** — optional caps on individual projects, so one team or environment can't consume the entire org limit.
 
 Per-project caps come from two places:
@@ -336,18 +336,22 @@ A project's effective cap resolves in this order:
 2. Otherwise, the organization's default project cap, if set.
 3. Otherwise, no per-project cap — only the organization limit applies.
 
-A per-project cap never lets a project exceed your organization's concurrent-session limit.
+A per-project cap never lets a project exceed your organization's concurrency limit.
 
 | Method | Path | Description |
 | --- | --- | --- |
-| `GET` | `/org/limits` | Get the org concurrent-session limit and the default per-project cap |
+| `GET` | `/org/limits` | Get the org concurrency limit and the default per-project cap |
 | `PATCH` | `/org/limits` | Set the default per-project cap (send `0` to clear it) |
 | `GET` | `/org/projects/{id}/limits` | Get a single project's limit overrides |
 | `PATCH` | `/org/projects/{id}/limits` | Set a single project's limit overrides (send `0` to clear a cap) |
 
+<Info>
+  `max_pooled_sessions` is deprecated. Pooled browsers now count toward `max_concurrent_sessions`, and requests that set `max_pooled_sessions` return a `400`.
+</Info>
+
 ### Set an org-wide default
 
-Apply a default of 10 concurrent sessions to every project that doesn't have its own override:
+Apply a default of 10 concurrent browsers to every project that doesn't have its own override:
 
 <CodeGroup>
 ```bash cURL

reference/cli/projects.mdx

@@ -68,9 +68,9 @@ Update per-project limit overrides. Pass `0` to a limit to remove the cap for th
 
 | Flag | Description |
 |------|-------------|
-| `--max-concurrent-sessions <n>` | Maximum concurrent browser sessions (0 to remove cap). |
+| `--max-concurrent-sessions <n>` | Maximum concurrent browsers, covering both on-demand sessions and browser pool reservations (0 to remove cap). |
 | `--max-concurrent-invocations <n>` | Maximum concurrent app invocations (0 to remove cap). |
-| `--max-pooled-sessions <n>` | Maximum pooled sessions capacity (0 to remove cap). |
+| `--max-pooled-sessions <n>` | Deprecated — pooled browsers now count toward `--max-concurrent-sessions`. |
 | `--output json`, `-o json` | Output raw JSON object. |
 
 ```bash