Top AI Consulting Companies (2026): 7 Firms Scored

A common complaint about AI consulting is that it often comes down to wiring ChatGPT into a few workflows and sending an invoice for strategy. Sometimes that complaint is fair. Plenty of firms sell a roadmap, leave, and the pilot never reaches daily use. Others build systems that still run a year later. From the outside the two look alike, because nearly every firm says it does both.

So we ranked seven AI consulting companies on things you can check on their own websites: named client work, published prices, stated timelines, contract terms, size and range of services. Each firm gets a score from 1 to 5 on six criteria, and the ranking follows the total. We checked every fact on the firm's own site on 2026-11-11 and linked the page.

Three of the six criteria reward firms that publish their price, timeline and terms. If those don't matter to you and you need a firm that can staff a programme across many countries, sort by the scale and breadth columns instead. Accenture and BCG X lead on those.

How we scored the firms

In between: a timeline shown only as one client's project result scores 2. "Working systems in weeks" with no number scores 4. Named engagement models with no terms score 2.

The scores

No firm on this list other than AY Automate publishes a price. With the others, you learn the number on a call.

1. AY Automate: 22/30

AY Automate is a small team of engineers who scope AI work and then build it inside the client's tools, mostly LLM agents and n8n automations. Its generative AI consulting service has the consultant write the code. The golden offer page puts the timeline in writing: "Roadmap locked in week one." and "Live in 10 days, not 10 weeks." The engineer embeds in your Slack and ships the first working automation in week two.

Named work on the case studies page includes Kateb, a legal AI company in Morocco, where the platform was "built from the ground up in under a month" and reads documents in whichever language they arrive in. At Pilote EMC, a French construction company, the work covered electronic invoicing and subcontractor VAT compliance end to end. Orbital Eye and Unmuted each have a full-time embedded engineer from the team.

Price is published: from $3K a month, cancel anytime, with a 90-day replacement guarantee. That is the starting price for one engineer, so your quote may be higher.

Where it scores low: scale. The golden offer page lists 25 engineers on the bench, one dedicated per client. AY Automate builds with large language models and agents and does not do classical machine learning or enterprise-wide change programmes.

Best for: companies that want one AI system in production within weeks and a monthly price they can cancel.

2. Accenture: 18/30

Accenture sells AI strategy, generative AI, data foundations, responsible AI and its own AI platform. Its site lists "814k Accenture employees worldwide" (company index), which is why it scores 5 on scale and breadth.

Proof is public and named. A Best Buy case covers a generative AI assistant for troubleshooting, order changes and subscriptions, and a Bricorama case covers a shopping assistant.

The site publishes no price, timeline or contract terms. You get those after the first conversation.

Best for: large enterprises that need AI, data and workforce programmes delivered across many countries.

3. BCG X: 17/30

BCG X is the tech build and design unit of Boston Consulting Group. The page describes "3,000+ tech builders, designers, and entrepreneurs" across 80 cities.

Its named cases are some of the most concrete on this list: a GenAI platform for Reckitt covering innovation through launch, and an AI scheduling platform for Rio Tinto.

No price, timeline or terms are published.

Best for: companies that want strategy consultants and a build team in one firm, often for a new AI product or platform.

4 (tie). Neurons Lab: 16/30

Neurons Lab is a boutique with "50+ AI engineers" and offices in London and Singapore. It sells AI training for teams and custom agents deployed in the client's infrastructure, with a focus on financial services.

It is one of two firms here that states a delivery speed: "working, production-grade systems in weeks." The Visa case backs it up with a content tool that generates marketing copy in 20 languages, completed "in under 2 months."

It names its delivery model, "Embedded Co-Creation," without publishing terms or price.

Best for: banks and insurers that want a small senior team with financial services agents already built.

4 (tie). Thoughtworks: 16/30

Thoughtworks sells AI strategy, agentic AI through its AI/works platform, and data and legacy modernisation. The about page lists "10,000+ talented Thoughtworkers" and "45 offices in 22 countries."

Named proof includes Bayer, where AI was used on preclinical data. The AI page mentions one manufacturing project that reached its target in under five weeks, which scores 2 on timeline because it is a single project result, not a standard promise.

Best for: engineering-led organisations that want AI work tied to software and data modernisation.

6. Slalom: 15/30

Slalom sells AI from strategy through implementation, including machine learning and generative AI. Its who we are page lists 54 local offices.

The Siemens story covers rolling out AI coding tools to 30,000 developers. A healthcare client story mentions moving to AI-ready data in seven months, again a single project, so it scores 2 on timeline.

Best for: companies that want AI strategy and implementation from a firm with an office nearby.

7. LeewayHertz: 12/30

LeewayHertz sells AI strategy consulting and AI development, including NLP, computer vision, predictive analytics and AI agents. Its homepage says it has been acquired by The Hackett Group.

Named proof includes an LLM-powered compliance app for Scrut. Several other case pages describe the client without naming it. The site lists three engagement models (dedicated team, team extension and project-based) with no terms, and no price, timeline or headcount.

Best for: buyers who want one vendor for a wide range of AI techniques, including computer vision.

How to pick

• If you need one AI system running this quarter and want to know the monthly cost before the first call, start with a firm that publishes both.
• If the work spans thousands of people and several countries, the scale column matters more than the rest of the table.
• Ask every firm for a named client whose system is still in production, and what it does today.

For a US-only cut of this list, see the best AI consulting firms in the USA. If you want to talk through your own case, book a 30-minute call with our team.