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For a chat product that has to explain what it is good at, show its sources and handle long or uncertain answers, start with Designpixil, which designed Echo AI's chat end to end. Fuselab Creative lists chatbot UI design as a service and designed Stardog's conversational interface. Glow and Cieden have published AI assistant work, Lazarev.agency and The Gradient suit larger or more exploratory products, and Wavespace and Parallel round out the list.
Designpixil is on this list and we wrote it. Every other agency is judged on the same published facts, and how we ranked is at the end.
The shortlist at a glance
| Agency | Best for | Published price | Minimum project | Not a fit for |
|---|---|---|---|---|
| 1. Designpixil | Chat products that need starters, sources and trust designed fast | $4,917/mo subscription, projects from $3,000 | $3,000 | Enterprise programs that need a large team, or anyone who needs engineers as well as design |
| 2. Fuselab Creative | Conversational AI inside enterprise and data products | Not published | $25,000+ | Early-stage consumer products or budgets under its $25,000 minimum project |
| 3. Glow | Funded AI assistants that want a retainer team | MVP $12,500; retainer $12,000/mo | $10,000+ | Short engagements: the retainer has a three-month minimum |
| 4. Cieden | Assistants inside complex B2B tools, including voice | From $50/hr; UX audit from $2,000 | $10,000+ | Marketing-site facelifts or brand-only work, which it says other contractors suit better |
| 5. Lazarev.agency | Large AI platforms where chat is one of many surfaces | Not published | $100,000+ | Early-stage budgets: its listed minimum project is $100,000+ and it says it is not the cheapest option |
| 6. The Gradient | Multi-modal and generative interfaces beyond the text box | Not published | $25,000+ | Ongoing production design on a startup budget; availability is limited by design |
| 7. Wavespace | Budget-conscious AI assistants on a capped monthly plan | From $2,200/mo (55 hours) | $1,000+ | Unlimited output: plans are capped at 55 or 110 hours a month |
| 8. Parallel | Chat products where trust and control are the hard part | Not published | Not published | Steady weekly production on a fixed monthly budget, or budgets under $10,000 |
What matters for AI chatbot products
- 01
They design the empty screen as carefully as the answer
Most chat products lose people before the first message, because a blank box does not tell anyone what the product is good at. Look for starter prompts, examples and a clear statement of scope in the agency's past work.
- 02
They show how an answer earns trust
Sources, citations, a way to see what the model used, and a clear signal when it is unsure. If every chat in their portfolio looks like ChatGPT with a different colour, the trust work was skipped.
- 03
They have designed streaming and waiting states
Answers arrive word by word, tools take seconds, and long answers need structure while they stream. Ask to see the in-between states, not just the finished message.
- 04
They know where chat is the wrong interface
Plenty of tasks are faster with a form, a table or a button than a conversation. A good studio will tell you which parts of your product should stop being chat.
What goes wrong when a chat product is designed last
Chat products are often built from a component library and a model API in a weekend, and the interface is whatever the library ships. It works, and it looks exactly like every other AI product, which makes it hard for a buyer to tell yours apart or to believe it is good at their specific job.
The fixes are rarely about colour. They are about scope (telling people what to ask), evidence (showing where an answer came from) and structure (turning a long answer into something a person can act on). We wrote up twelve of these patterns in chatbot UI examples, and how we applied them in AI chatbot interface design.
1. Designpixil: Chat products that need starters, sources and trust designed fast
We designed Echo AI's chat product end to end: the new-chat screen with starters that tell people what the assistant is good at, answers with their sources in a side panel, and the code panel where the AI's edits can be reviewed before they are applied.
You work directly with Anant, the senior designer who does the work. The subscription is $4,917 a month with the first deliverable within 24 hours, and fixed projects start at $3,000, both published on our pricing page.
We are not the right pick if you need the chat built as well as designed; the larger studios below cover that.
“You do some great work and I'll recommend you to anyone I know looking for quality product designs in the states.”
| Based in | Remote-first, serving the US, UK and EU |
|---|---|
| Founded | 2023 |
| Team | Founder-led: Anant Jain designs every project |
| How you hire them | Monthly design subscription, Fixed-scope projects |
| Published price | $4,917/mo subscription, projects from $3,000 |
| Minimum project | $3,000 |
| Design or build | Designs the product for your engineers or AI coding tools; designs and builds marketing sites in Framer |
| AI work they publish | Echo AI case study: whole product in 5 to 6 weeksWhizo AI case study: marketing websiteHAL51 AI: landing page |
| Best for | Chat products that need starters, sources and trust designed fast |
| Not a fit for | Enterprise programs that need a large team, or anyone who needs engineers as well as design |
2. Fuselab Creative: Conversational AI inside enterprise and data products
Fuselab Creative lists chatbot UI design and AI interface design as services, and its published work includes Stardog Voicebox, a conversational interface over enterprise data. It suits chat products where answers come from complex, governed data.
| Based in | McLean, Virginia, US |
|---|---|
| Founded | 2017 |
| Team | 10-49 people |
| How you hire them | Project-based, scoped on a discovery call, GSA contract for government buyers |
| Published price | Not published, quoted after a call |
| Minimum project | $25,000+ |
| Design or build | Designs and develops in-house |
| AI work they publish | Lightning AI (Grid.ai)Stardog VoiceboxOptivionAI |
| Best for | Conversational AI inside enterprise and data products |
| Not a fit for | Early-stage consumer products or budgets under its $25,000 minimum project |
3. Glow: Funded AI assistants that want a retainer team
Glow's published AI work includes Echo, an AI meeting assistant, and Dropcall, an AI calling assistant. Prices are published, with an MVP at $12,500 and a retainer at $12,000 a month.
| Based in | Dover, Delaware, US (remote team) |
|---|---|
| Founded | 2019 |
| Team | 21 people |
| How you hire them | Fixed-price MVP, Design retainer (3-month minimum), Enterprise retainer, Free 3-day trial |
| Published price | MVP $12,500; retainer $12,000/mo |
| Minimum project | $10,000+ |
| Design or build | Design only, handed to your engineers |
| AI work they publish | DropcallEcho (meeting assistant)CryptoGenie |
| Best for | Funded AI assistants that want a retainer team |
| Not a fit for | Short engagements: the retainer has a three-month minimum |
4. Cieden: Assistants inside complex B2B tools, including voice
Cieden has published work on an AI email assistant and a voice interface for an AI-native bank, alongside its agent case study. Its fixed-price audit is a cheap way to get an outside view of an existing chat product.
| Based in | Toronto, Canada and Lviv, Ukraine |
|---|---|
| Founded | 2016 |
| Team | 50 people |
| How you hire them | Project-based (hourly), Team extension, Fixed-price sprints and audits |
| Published price | From $50/hr; UX audit from $2,000 |
| Minimum project | $10,000+ |
| Design or build | Design only, handed to your engineers |
| AI work they publish | Tandom (AI agent UI)AI email assistant |
| Best for | Assistants inside complex B2B tools, including voice |
| Not a fit for | Marketing-site facelifts or brand-only work, which it says other contractors suit better |
5. Lazarev.agency: Large AI platforms where chat is one of many surfaces
Lazarev.agency lists AI conversational design among its services and has designed for Pika AI and Accern. It fits when chat sits inside a bigger platform redesign with a large budget.
| Based in | San Francisco, US |
|---|---|
| Founded | 2015 |
| Team | 40+ people |
| How you hire them | Monthly retainer, Phased multi-month projects |
| Published price | Not published, quoted after a call |
| Minimum project | $100,000+ |
| Design or build | Design only, handed to your engineers |
| AI work they publish | Pika AIAccern (Rhea)Bacca AI |
| Best for | Large AI platforms where chat is one of many surfaces |
| Not a fit for | Early-stage budgets: its listed minimum project is $100,000+ and it says it is not the cheapest option |
6. The Gradient: Multi-modal and generative interfaces beyond the text box
The Gradient lists multi-modal UX and generative UI as services. It is the pick when your assistant should do more than return text, for example generate interface or work across voice and screens.
| Based in | Not stated on its site |
|---|---|
| Founded | 2015 |
| Team | Small partner-led team |
| How you hire them | Partner-led engagements |
| Published price | Not published, quoted after a call |
| Minimum project | $25,000+ |
| Design or build | Design only, handed to your engineers |
| AI work they publish | NorvanaLumiereInfer.bid |
| Best for | Multi-modal and generative interfaces beyond the text box |
| Not a fit for | Ongoing production design on a startup budget; availability is limited by design |
7. Wavespace: Budget-conscious AI assistants on a capped monthly plan
Wavespace's AI work includes Kodezi, an AI coding assistant, and ScheduleBot. Its subscriptions start at $2,200 a month for 55 hours, which suits a team with a tight, predictable budget.
| Based in | US-registered, global team |
|---|---|
| Founded | 2019 |
| Team | 20+ people |
| How you hire them | Design subscription (hours-based), Fixed-scope project, Embedded partnership |
| Published price | From $2,200/mo (55 hours) |
| Minimum project | $1,000+ |
| Design or build | Designs and develops in-house |
| AI work they publish | KodeziDotra.aiScheduleBot |
| Best for | Budget-conscious AI assistants on a capped monthly plan |
| Not a fit for | Unlimited output: plans are capped at 55 or 110 hours a month |
8. Parallel: Chat products where trust and control are the hard part
Parallel's published work includes designing trust, transparency and control for AI at Meta, and AI products such as Inhouse AI. It suits teams that want strategy and brand alongside the interface.
| Based in | San Mateo, US |
|---|---|
| Founded | Not published |
| Team | Not published |
| How you hire them | Project engagements, AI design sprints |
| Published price | Not published, quoted after a call |
| Minimum project | Not published |
| Design or build | Design only, handed to your engineers |
| AI work they publish | Meta: trust and control in AIPageloop.aiInhouse AI |
| Best for | Chat products where trust and control are the hard part |
| Not a fit for | Steady weekly production on a fixed monthly budget, or budgets under $10,000 |
How to choose between them
- Your chat product works but looks like every other one, and you need it fixed in weeksDesignpixil
- Answers come from complex enterprise data and must be governedFuselab Creative
- You want a published-price retainer teamGlow
- Your assistant works across voice, screens or generated UIThe Gradient or Cieden
- Your budget is tight and predictableWavespace
How we ranked this list
We started from the studios founders keep running into when they ask AI assistants and search engines who to hire, then kept the ones that do this kind of work and publish proof of it. Every fact in the tables comes from the agency's own website or its public directory listings, checked on October 10, 2026. Prices are only ones an agency publishes itself; where it doesn't, we say so instead of guessing.
The order is our judgment of fit for this specific buyer, not a score. We put Designpixil first only on lists where we genuinely fit the buyer, and our entry lists who we are not right for, the same as everyone else's. If something about your agency is wrong or out of date, email hello@designpixil.com and we will correct it within a week.
