Copilot Studio vs n8n in 2026: an honest comparison for UK firms

If you are shortlisting platforms for AI agents this year, Microsoft Copilot Studio and n8n are probably both on the list. They are two of the strongest options available, and they could hardly be more different in philosophy. One lives inside your Microsoft 365 tenant and inherits its governance. The other is open source, runs anywhere and costs a fraction of the price.

We design and build agents in Copilot Studio, so you might expect this comparison to be a foregone conclusion. It is not. n8n wins some of these rounds outright, and pretending otherwise would not help you make a good decision. What follows is the honest version: where each platform genuinely shines, what Copilot Credits billing really costs and why compliance, rather than features, should probably make the decision for most UK firms.

There is also a reason to read this now rather than later. On 3 August 2026 Microsoft made the new Copilot Studio experience generally available, and with it a usage-based billing model that charges Copilot Credits from the moment you start building. Agents and workflows built on that new experience during its preview start consuming credits on 1 September 2026. If you have been experimenting with it, your bill is about to change.

What each platform actually is

Microsoft Copilot Studio is Microsoft’s low-code platform for building AI agents that live inside Microsoft 365: in Teams, in SharePoint, inside Microsoft 365 Copilot and on your website. In 2026 Microsoft rebuilt it around a new authoring experience and a modern AI core, with Microsoft IQ connecting agents to organisational data such as email, calendars, files and Teams messages. The new experience reached general availability on 3 August 2026, and it is a genuine step up: a cleaner interface, better instruction following and stronger multi-step reasoning, with native file handling, skills and memory.

n8n is an open-source workflow automation platform that has grown into one of the most capable AI agent builders on the market. You get a visual editor with inline code when you need it, AI agent nodes for OpenAI, Anthropic, Google and other models, and hundreds of integrations. You can run it on n8n’s managed cloud or self-host it for free on your own server. It is developer-leaning, highly flexible and one of the fastest-growing tools in the automation space.

Where n8n genuinely wins

Start with price, because the gap is real.

Two things make n8n’s pricing unusually friendly. First, it bills per execution, meaning one complete run of a workflow however many steps it contains. A fifty-step workflow costs the same as a two-step one, which makes complex automations dramatically cheaper than on per-task tools. Second, every cloud plan now includes unlimited workflows and unlimited users, so execution volume is the only lever on your bill. Annual billing takes roughly 17 percent off.

Then there is flexibility. n8n will talk to any model, run on any infrastructure, accept custom JavaScript or Python mid-workflow and never lock you into a vendor’s roadmap. If you have developers on staff and a mixed or non-Microsoft estate, n8n is arguably the best value automation platform available right now.

Where Copilot Studio shines: the compliance factor

“Secure hosting” is the phrase people reach for here, and it slightly misses the point. n8n Cloud is competently hosted: it holds a SOC 2 Type 2 report, publishes GDPR documentation and runs on Microsoft Azure infrastructure in the EU, with hosted data stored in Frankfurt, Germany. The real difference is whose security estate your agent lives inside.

Over 2026, Microsoft has quietly turned Copilot Studio into the most governable agent platform on the market:

• Since July 2026, every new Copilot Studio agent automatically receives a Microsoft Entra Agent ID, with no opt-out. Agents become first-class identities in your directory, subject to Conditional Access, sign-in auditing and lifecycle management just like a member of staff.
• Agents are shared through Entra security groups rather than with individuals, so access is enforced at the identity layer rather than by ad hoc sharing.
• The connectors an agent is allowed to call are visible to admins in the Microsoft Entra admin centre.
• Agent activity feeds Microsoft Purview auditing, and Power Platform DLP policies control which connectors agents can touch in the first place.
• Agent 365, generally available since May 2026, gives larger organisations a single control plane to observe, govern and secure their whole agent estate.

Then the part that matters most to a regulated firm: an agent grounded on your SharePoint respects the permissions you have already set, and client data never leaves the tenant boundary you already govern. The security controls, the audit trail and the data residency are the ones your firm already owns and already evidences. For accountancy practices, law firms and anyone who answers to a regulator or a professional body, that is not a feature comparison. It is the decision. Our practical governance guide to client data sets out what that looks like in day to day use.

The self-hosting trap for firms without an IT department

“n8n is free” deserves one large caveat. Self-hosted n8n carries no compliance certification by default. Whether your deployment would satisfy a SOC 2 auditor, a GDPR review or a professional body depends entirely on how you host it, patch it, encrypt it, control access to it and log what it does. All of that is achievable, and plenty of engineering teams do it well.

But be honest about who “you” is. A 40-person accountancy practice with no internal IT team should not be patching Docker containers, rotating credentials and assembling audit evidence to save the cost of a credit pack each month. n8n Cloud removes the operational burden, though it is hosted in the EU rather than the UK and single sign-on sits on the higher tiers. None of that is disqualifying. It is simply work and risk that Copilot Studio hands to Microsoft, inside a boundary your firm already trusts.

Now the bad news: what Copilot Studio actually costs

Here is where n8n lands its punches, so let us be precise. Copilot Studio has billed in Copilot Credits since September 2025, when Microsoft renamed the old messages unit. One credit costs $0.01, credits pool at tenant level and the same currency now meters other Copilot products such as Copilot Cowork, so your agents share a budget with everything else Microsoft bills in credits.

Microsoft’s published rates for the standard harness:

• Classic (scripted) answer: 1 credit
• Generative answer: 2 credits
• Agent action (triggers, deep reasoning steps, computer use): 5 credits
• Tenant graph grounding over your Microsoft 365 data: 10 credits, so a typical graph-grounded generative response totals 12
• Agent flow actions: 13 credits per 100 actions
• Reasoning models add a premium meter of 10 credits per 1,000 tokens on top of the feature rate

You can buy credits three ways: pay-as-you-go at $0.01 per credit billed in arrears, a capacity pack of 25,000 credits for $200 a month (which resets monthly with no rollover, so unused credits are wasted) or an annual Pre-Purchase Plan carrying discounts of 5 to 20 percent aimed at commitments from 300,000 credits upward. The rule of thumb: below roughly 20,000 credits a month, pay-as-you-go wins.

What does that mean in practice? One independent estimate built on Microsoft’s rates puts a single agent serving 100 users at around 20 conversations each per month at roughly 15,000 credits, or about $150 a month. Microsoft’s own documentation includes a website customer support example that reaches 7,200 credits a day at 900 customers, north of $2,000 a month at pay-as-you-go rates. Not ruinous for one internal agent, but multiply it across a fleet, remember that grounding choices and tool calls drive the meter, and agent design becomes a cost decision rather than a purely technical one. The habits that keep Copilot Credits under control apply to agent builds without modification.

One more thing worth knowing: prepaid capacity is enforced. If a tenant reaches 125 percent of its prepaid credits, custom agents are disabled until capacity is added, so anyone running on packs alone should treat pay-as-you-go overflow as a safety net rather than an optional extra.

The licensing nuance most comparisons miss

The cost story has a second half, and it flips in Microsoft’s favour for exactly the firms most likely to be reading this.

If your users hold Microsoft 365 Copilot licences, employee-facing usage of standard-harness agents is zero-rated. When a licensed user interacts with an agent in Copilot Chat, Teams or SharePoint under their own identity, the classic answers, generative answers, agent actions, tenant graph grounding, AI tools and agent-triggered flows are all marked no charge in Microsoft’s rate table, within fair usage limits. Computer use is the one exception, billed even for licensed users. In plain English: a firm already paying for Microsoft 365 Copilot can run internal knowledge agents, policy assistants and helpdesk agents for those licensed users at effectively no additional usage cost. Most Copilot Studio vs n8n comparisons never mention this, and it changes the maths completely for Microsoft 365 firms.

Now the sting. That zero-rating belongs to the standard and chat harnesses. The new GitHub Copilot harness bills on pure consumption, and billing starts when you start building: creating an agent with natural language, previewing and testing it, and generating evaluations all consume credits before anything is published. Detailed public rates for the new harness are still sparse at the time of writing. Our practical advice: keep straightforward internal agents on the standard harness where the zero-rating applies, adopt the new harness deliberately for the reasoning-heavy work it is built for and switch on pay-as-you-go metering so you can see consumption before you scale anything. Our guide to which harness each agent belongs on works through that decision in four questions.

And if you built agents or workflows on the new experience during its preview, put a date in your diary. They start consuming Copilot Credits under the usage-based model on 1 September 2026.

What about Zapier, Make and Power Automate?

Zapier and Make deserve a mention because they appear on the same shortlists. Both are excellent at lightweight app-to-app integration, both price per task or operation and both are simpler to learn than either platform above. But their agent capabilities are thinner and neither offers tenant-level identity governance of the kind described here. If the job is “when a form comes in, update the spreadsheet and email the client”, they are great. That is not the job this comparison is about.

Power Automate is a different conversation again. It is the workflow layer that sits alongside Copilot Studio in the Microsoft stack: agents converse and decide, flows execute. In practice it is n8n’s closer like-for-like rival, and most serious Copilot Studio builds use agents and flows together.

The verdict for UK firms

Choose n8n if you have developers on staff or on tap, your estate is mixed or not Microsoft-centred, your workloads are high-volume backend automation where per-execution pricing shines and you are comfortable owning your own hosting, security and compliance evidence.

Choose Copilot Studio if your firm runs on Microsoft 365, you handle client data a regulator cares about, you have no internal IT department to run infrastructure and you want agents to appear where your people already work, in Teams and Microsoft 365 Copilot, governed by the Entra, Purview and DLP controls you already own.

For the firms we work with, UK professional services practices of typically 10 to 200 staff, the second list describes nearly all of them. Our view is Copilot Studio, with eyes open on credits and with agent design treated as a cost discipline from day one. The compliance factor is not a tiebreaker. For a regulated firm it is the whole game.

Whichever way the platform decision goes, the questions underneath it are the same: what the agent is allowed to see, who owns it and where a person checks its work. The agent governance toolkit sets out the three we ask of any agent, and the Agent Journey maps the stages a firm moves through on the way there.

If you are weighing this decision for your practice, our Copilot Studio agent builds service starts with the process rather than the platform, and Power Automate consultancy covers the deterministic half of the work. Or book a free 30 minute consultation, no pitch and no obligation, and we will give you a straight answer on which platform fits and what it would cost to run.

Sources checked

Last checked: 20 August 2026.

• Microsoft Copilot Studio pricing
• Microsoft Learn: Copilot Credits billing rates
• Microsoft Learn: choose a harness
• Microsoft Learn: usage-based billing on the GitHub Copilot harness
• Microsoft Copilot Studio Licensing Guide
• Microsoft Learn: automatic Entra Agent IDs in Copilot Studio
• Microsoft Learn: Copilot Studio security and governance
• Microsoft: Meet the new Copilot Studio
• n8n pricing
• n8n Trust Center
• n8n security documentation