Same feature set. Same database. Same Laravel backend. One built with Inertia + Vue, one built with Livewire 4. Here are the real differences in DX, performance, bundle size, SEO, and the type of team each one actually suits — not the marketing version.
I’ve read most of the Livewire vs Inertia comparisons published this year. They’re mostly correct. They’re also mostly written by people who haven’t shipped both stacks in production on the same product. The comparisons default to philosophical framing — “Livewire is for PHP developers, Inertia is for JavaScript developers” — which is true but tells you almost nothing about which one you should pick for the specific thing you’re building right now.
This post is written after building the same SaaS feature set twice: a multi-tenant project management tool with dashboards, real-time activity feeds, drag-and-drop Kanban boards, form-heavy settings pages, and a public-facing marketing site with SEO requirements. One implementation in Inertia + Vue 3. One in Livewire 4. Both in production for over four months. The comparison here is based on what those four months actually looked like, not on what either framework’s documentation says.
Livewire 4 shipped in January 2026. Inertia 3 shipped in March 2026. Both are the most current versions.
The Fundamental Difference Nobody Explains Well Enough
Every comparison eventually says some version of this: Livewire runs on the server, Inertia runs on the client. That’s accurate and insufficient.
The real difference is where the component boundary lives and what that costs you:
Livewire component lifecycle:
User interacts → Alpine.js captures the event
→ Network request to Laravel server
→ PHP component re-renders in the server
→ Diff is computed
→ DOM is updated with the diff
→ User sees the result
Inertia + Vue component lifecycle:
User interacts → Vue event handler fires
→ State updates in JavaScript (reactive, instant)
→ Vue re-renders affected DOM nodes
→ (If server data is needed) Inertia makes a request
→ Server returns new props
→ Vue re-renders with new data
The implication: Livewire components have a network round-trip on every interaction that changes server state. Vue components have zero network overhead for UI state changes — only when data needs to come from or go to the server. On a local network or fast connection, you can’t feel this. On a mobile 4G connection with 80ms latency, it’s the difference between a UI that feels snappy and one that feels like it’s thinking.
This single architectural difference drives most of the practical trade-offs.
Developer Experience: What a Day of Work Actually Feels Like
Livewire 4
Livewire 4’s biggest DX improvement over v3 is the component authoring experience. The class-based syntax tightened up:
<?php
use Livewire\Component;
use Livewire\Attributes\{Computed, Validate, On};
use App\Models\Task;
new class extends Component
{
public string $title = '';
public string $priority = 'medium';
#[Validate('required|min:3')]
public string $description = '';
#[On('task-created')]
public function refresh(): void
{
unset($this->tasks);
}
#[Computed]
public function tasks()
{
return Task::where('project_id', $this->projectId)
->with('assignee')
->orderBy('position')
->get();
}
public function create(): void
{
$this->validate();
Task::create([
'title' => $this->title,
'description' => $this->description,
'priority' => $this->priority,
'project_id' => $this->projectId,
]);
$this->reset('title', 'description');
$this->dispatch('task-created');
}
public function render()
{
return view('livewire.task-list');
}
};
The experience of writing this: you stay in PHP. Validation is a single attribute. The computed property caches automatically. The event dispatch is one line. A Laravel developer who has never written a JavaScript framework can read this and understand exactly what’s happening. That’s the genuine strength.
The friction: every interaction that updates a #[Computed] property or touches server state goes to the server. For a task list with filters, sorts, and pagination, you’ll feel this on latency-sensitive connections. And when you need something the server-side model doesn’t support — drag-and-drop reordering, canvas manipulation, a rich text editor with real-time collaborative features — you reach for Alpine.js, which then has to communicate back to the Livewire component, which then has to make a server call. The seams show.
Inertia + Vue 3
The same feature in Inertia + Vue 3:
<!-- Pages/Projects/TaskList.vue -->
<script setup lang="ts">
import { ref, computed } from 'vue'
import { useForm, router } from '@inertiajs/vue3'
import { route } from 'ziggy-js'
const props = defineProps<{
projectId: number
tasks: Task[]
}>()
const form = useForm({
title: '',
description: '',
priority: 'medium' as 'low' | 'medium' | 'high',
})
function create() {
form.post(route('projects.tasks.store', props.projectId), {
preserveScroll: true,
onSuccess: () => form.reset(),
})
}
// Local state — zero network overhead
const filterPriority = ref<string | null>(null)
const filteredTasks = computed(() =>
filterPriority.value
? props.tasks.filter(t => t.priority === filterPriority.value)
: props.tasks
)
</script>
The experience: TypeScript throughout. Local state (filterPriority) is instant — filtering doesn’t go to the server. The Vue ecosystem is fully available. You can drop in a drag-and-drop library (@dnd-kit, vue-draggable-plus), a rich text editor (tiptap), or any npm package without an adapter layer.
The friction: the Laravel controller has to return the right data, which means thinking in terms of what data the page needs rather than what the component needs. Shared state across components requires either Pinia or passing props through the Inertia page component tree. The mental model shift for a PHP-native developer is real — you’re not writing PHP component logic anymore, you’re writing a separate Vue application that happens to be served by Laravel.
The Kanban Board Test
The clearest test of where each stack shows strain is the drag-and-drop Kanban board — a feature that’s genuinely client-heavy, has real-time requirements, and needs to persist order changes to the database.
Livewire version
// Livewire component using Alpine.js for drag-and-drop
// The drag-and-drop itself is Alpine + Sortable.js
// Persistence is a Livewire call when drop completes
public function updateOrder(array $orderedIds): void
{
foreach ($orderedIds as $position => $taskId) {
Task::where('id', $taskId)->update(['position' => $position]);
}
$this->dispatch('order-updated');
}
<!-- Blade template with Alpine.js Sortable integration -->
<div
x-data="sortable"
x-on:end="$wire.updateOrder($event.detail.order)"
>
@foreach($this->tasks as $task)
<div wire:key="{{ $task->id }}" data-id="{{ $task->id }}">
<!-- task card -->
</div>
@endforeach
</div>
This works. The Sortable.js drag is smooth because it’s entirely client-side. The persistence call happens on drop, not during drag. The seam is the Alpine-to-Livewire communication layer — $wire.updateOrder() is a Livewire magic method, which means the persistence triggers a full server round-trip when the drop completes. On fast connections, this is fine. It becomes noticeable at latency.
Inertia + Vue version
<script setup lang="ts">
import { useSortable } from '@vueuse/integrations/useSortable'
import { router } from '@inertiajs/vue3'
import { ref } from 'vue'
const props = defineProps<{ tasks: Task[] }>()
const taskList = ref(props.tasks)
const el = ref<HTMLElement>()
useSortable(el, taskList, {
onEnd: () => {
// Optimistic update already happened (Vue state updated instantly)
// Persist to the server
router.put(route('tasks.reorder'), {
order: taskList.value.map(t => t.id),
}, { preserveScroll: true })
},
})
</script>
The Vue version is cleaner for this specific feature. useSortable from VueUse integrates directly with the reactive array. The UI updates optimistically — the card is already in the new position before the server responds. The router.put() call happens in the background. The developer writes standard Vue code with full access to the npm ecosystem.
The Kanban board is the feature where Inertia won clearly in the side-by-side. Not because Livewire couldn’t do it — it could — but because the implementation in Vue felt native to the problem and the Livewire implementation felt like working around the tool.
Performance: The Numbers That Actually Mattered
Bundle size
Inertia + Vue 3 (with code splitting, production build):
Initial bundle: ~180KB gzipped (Vue core + Inertia adapter + app code)
Per-page code: 2–15KB per lazy-loaded page component
Total parsed: Adds ~400–600ms parse time on a mid-range Android device
Livewire 4 (production, with Alpine.js):
Livewire JS: ~46KB gzipped
Alpine.js: ~15KB gzipped
Total: ~61KB gzipped
No per-page JS — the component is PHP
The bundle difference is significant for public-facing pages. The marketing site and SEO-heavy content pages went on Livewire because the 61KB vs 180KB difference is measurable on Core Web Vitals — specifically Interaction to Next Paint (INP) and Total Blocking Time. The dashboard and app shell went on Inertia because the JavaScript overhead is a one-time cost paid at app load, after which navigation is instant.
Network requests per interaction
Form with 3 fields, submit on change (e.g. auto-save settings):
Livewire: 1 network request per field change
→ Each wire:model.live call → server round-trip → diff → DOM update
→ With debounce: still 1 request per debounce interval
Inertia + Vue: 0 network requests for UI state
→ Vue reactivity updates local state instantly
→ 1 network request when user stops typing (debounced router.patch())
For a settings page with twenty fields and live validation, Livewire’s request pattern is verbose. This is where wire:model.live.debounce.500ms exists — defer the server call until typing stops. But it still means the validation feedback requires a server round-trip. Vue’s local state + Inertia form helper pattern validates locally and only persists to the server on submit.
Time to First Byte and SEO
Inertia + Vue (without SSR):
TTFB: Fast — Laravel server returns HTML shell immediately
FCP: Slow — Vue bootstraps, fetches initial page component
SEO: Problematic — crawlers see empty shell initially
SSR option: Available (Node.js server required) — fixes FCP and SEO
Livewire 4:
TTFB: Fast
FCP: Fast — full HTML rendered by Laravel, Livewire enhances
SEO: Excellent — complete HTML in the first response
SSR option: Not needed — it IS server-rendered
For the marketing site, Livewire was the only realistic choice. Full HTML on first response, no JavaScript required to see the content, excellent Core Web Vitals. Running Inertia + Vue SSR for a marketing site adds a Node.js process to the deployment, which is operational complexity for a solved problem.
Real-Time Features: Where the Seam Shows Most
Both stacks integrate with Laravel Reverb (WebSockets) or Pusher/Soketi. The integration patterns differ meaningfully.
Livewire + Reverb
// Livewire 4 — listen to a broadcast channel directly in the component
use Livewire\Attributes\On;
class ActivityFeed extends Component
{
public array $activities = [];
protected $listeners = [
'echo:projects.{projectId},TaskCreated' => 'addActivity',
];
public function addActivity(array $event): void
{
array_unshift($this->activities, $event['task']);
$this->activities = array_slice($this->activities, 0, 50);
}
}
Livewire’s Echo integration listens to a broadcast channel and calls a Livewire method when an event arrives. The method updates component state, Livewire re-renders. Clean for simple real-time updates — new records appearing, counters updating, status changes reflecting.
Inertia + Vue + Reverb
// Vue composable for real-time activity feed
import { onMounted, onUnmounted, ref } from 'vue'
import Echo from 'laravel-echo'
export function useActivityFeed(projectId: number) {
const activities = ref<Activity[]>([])
let channel: any
onMounted(() => {
channel = window.Echo
.private(`projects.${projectId}`)
.listen('TaskCreated', (event: { task: Task }) => {
activities.value.unshift(event.task)
if (activities.value.length > 50) {
activities.value.pop()
}
})
})
onUnmounted(() => {
channel?.stopListening('TaskCreated')
window.Echo.leave(`projects.${projectId}`)
})
return { activities }
}
The Vue version requires more setup — the Echo channel subscription, the cleanup on unmount — but gives you more control. The real-time state is local to the component and doesn’t require a server round-trip to apply. For collaborative features where multiple users are making changes simultaneously, the Vue approach with optimistic local state updates feels more responsive.
Neither approach is dramatically better for simple real-time updates. For complex multi-user collaborative features — where you’re merging remote changes into local state — Vue gives you more surface area to work with.
The SEO Question
The marketing framing of both tools sometimes implies SEO is complex with Inertia. It doesn’t need to be.
// Inertia + Vue — meta tags via @inertiajs/vue3 Head component
import { Head } from '@inertiajs/vue3'
<Head>
<title>{{ post.title }} | My Blog</title>
<meta name="description" :content="post.excerpt" />
<meta property="og:title" :content="post.title" />
</Head>
For a client-rendered Inertia app without SSR, this works for social sharing and structured data. For Google search specifically, Googlebot can execute JavaScript and will index the content. The risk is other search engines (Bing, DuckDuckGo) and the crawl budget impact of JavaScript-heavy pages.
For content-heavy public sites: Livewire, without qualification. Full HTML on first response, zero JavaScript required for content, no SSR infrastructure.
For app interfaces that live behind login: SEO doesn’t matter. Inertia is fine.
For hybrid apps (marketing site + authenticated app): use both. The resources/views directory can have both Blade/Livewire views and Inertia page components. Route the marketing pages to Livewire, the app pages to Inertia. This is not as complicated as it sounds and is what the production app ended up doing.
What Filament Changes About This Comparison
Filament — the first-party admin panel framework — runs on Livewire. If your application needs an admin panel (and most do), you’re already running Livewire as a dependency for Filament.
This changes the Inertia decision. You’re not choosing “one or the other” if you use Filament — you’re choosing whether to run both, or to run Livewire for the admin panel and Inertia for the public app. That’s a real architectural decision, not just a philosophical one:
Option A: Filament (Livewire) for admin + Inertia + Vue for user app
→ Two frontend stacks
→ More complex deployment
→ Each optimized for its use case
Option B: Livewire for everything, including user app
→ One frontend stack
→ Simpler mental model
→ Livewire carries the full UI weight
Option C: Filament for admin + API routes for user app (mobile, separate SPA)
→ Three stacks (Laravel backend, Filament admin, external frontend)
→ Maximum decoupling
→ Maximum complexity
Option B is the right default for teams that are moving fast and don’t have dedicated front-end developers. Option A is right when the user-facing application has enough UI complexity that Vue’s reactivity and ecosystem access genuinely help. Option C is right when there’s a separate mobile app or the frontend team thinks in React/Vue natively and doesn’t want any server-side rendering.
The Honest Decision Framework
Use Livewire 4 when:
→ The team is PHP-native and JavaScript frameworks are a second language
→ The primary UI is data tables, forms, settings pages, dashboards
→ SEO matters — public pages need full HTML on first response
→ You use Filament and want one mental model
→ You want to ship fast and don't need the npm ecosystem
→ Multi-page app where each page is relatively independent
Use Inertia + Vue when:
→ The team has Vue or React experience and thinks in components
→ The UI includes complex client interactions:
drag-and-drop, rich text editing, canvas, animations
→ You need the full npm ecosystem (component libraries, charting, etc.)
→ You want TypeScript end-to-end with Wayfinder for type-safe routes
→ You're building an app interface (not a content site) behind authentication
→ Multiple developers working on the frontend who don't want
to context-switch to PHP for component logic
Use both when:
→ You have a Livewire/Filament admin panel + a user-facing app
with genuinely complex UI
→ SEO-heavy public pages + a JavaScript-rich authenticated app
→ The team has mixed PHP/JS background and each wants to work
in their native context
The mistake to avoid is picking Inertia because it feels more modern when the team doesn’t actually need Vue’s capabilities, and picking Livewire for a complex interactive application because the team wants to avoid JavaScript. Both of those decisions create friction that shows up three months later when the feature set expands.
The One Thing Both Comparisons Get Wrong
Most Livewire vs Inertia posts frame this as a permanent architectural choice. It isn’t. Both stacks coexist in a Laravel application. The routes file can point some routes to Inertia controllers and some to Blade/Livewire views. Many production applications do exactly this — Livewire for form-heavy internal tools, Inertia for complex user-facing features, Blade for static content.
The choice isn’t “which one do I use forever.” It’s “which one is right for this specific surface of the application.” The question is whether the additional complexity of running both stacks is justified by the improvement in each surface’s quality. For most small-to-medium teams, it isn’t — pick one, get good at it, ship. For larger teams where the admin panel and user product are genuinely different UI problems, both is the honest answer.
Both stacks are mature, both are first-party, both are in production at serious scale. The State of Laravel 2025 survey showed Livewire adoption at 62% and Inertia at 48%. These aren’t niche tools. They’re the two primary Laravel frontend patterns, and the choice between them is a product and team question, not a technical capability question.