top codex ai development companies seattle

Top 10+ Codex AI Development Companies in Seattle, WA | Codex AI Developers Seattle 2026

Last Updated 06th November 2026 | Category: Top AI Development Firms

As of November 2026, this directory tracks 61 Codex AI companies. Hyperlink InfoSystem currently sits at the top of the list (5.0-star average from 497 verified reviews, $25 - $49 / hr, in business since 2011). Looking at the group as a whole, the midpoint hourly rate is $125, the median rating is 4.8, and 32% report a team of 50 or more. Most frequently listed specialties here include Mobile App Development, AI Development, Bot Development, and Web Development.

Every company on this page is evaluated on the same real signals: how clients have rated their work, what they charge per hour, how big their team is, and how long they've been in business. Clients rate these codex ai firms 4.9/5 on average. $100 - $149 / hr is the most common rate band. Roughly 31% of the companies listed report a headcount of 50 or more. Before reaching out to any shortlisted firm, it's worth cross-checking its review history and portfolio directly - every listing is manually checked (founding year, services, team size) and reviews go through a moderation step before they go live.

61
Verified Firms
$100 - $149 / hr
Most Common Rate
4.9
Average Rating
31%
Have 50+ Employees
How this list is built: Companies are added only after manual research into their foundation year, service offerings, ratings, and employee strength. Client reviews go through a verification step before being marked Verified and shown publicly. Listings marked Sponsored pay for premium placement — sponsorship does not affect star ratings or review content.

Top-Ranked Codex AI Companies

Compare the highest-ranked firms first side by side.

Rank Company Rating Reviews Hourly Rate Team Size Founded Headquarters Action
1 5.0 497 $25 - $49 / hr 1,000 - 9,999 2011 Jersey City, NJ Visit Profile
2 4.7 6 N/A 10 - 49 N/A — Visit Profile
3 4.6 8 Undisclosed 10 - 49 N/A — Visit Profile
4 4.6 7 $100 - $149 / hr 10 - 49 2005 Meridian charter Township, MI Visit Profile
5 4.4 8 $25 - $49 / hr 50 - 249 2006 Jaipur, India Visit Profile
6 4.4 6 $100 - $149 / hr 10 - 49 1988 — Visit Profile
7
4.3 6 N/A 50 - 249 2011 — Visit Profile
8 4.3 6 N/A N/A N/A — Visit Profile
9 4.2 8 Undisclosed 50 - 249 1998 Melbourne, FL Visit Profile
10 4.1 8 $25 - $49 / hr 10 - 49 2011 — Visit Profile

The List of Top 10+ Codex AI Development Companies In Seattle, Washington | Top Codex AI Developers Seattle, WA November 2026

2008
$150 - $199
10 - 49
$5,000,000+
Mobile App Development Web Development UI-UX Design Custom Software Development Web Design
1999
$100 - $149
50 - 249
$2,500,000+
Web Development UI-UX Design Custom Software Development Web Design iOS App Development iPhone App Development
N/A
N/A
N/A
$2,500,000+
Mobile App Development Web Development UI-UX Design Web Design Internet of Things DevOps & Cloud
2006
$100 - $149
2 - 9
$100,000+
Mobile App Development Web Development Custom Software Development Web Design Branding SEO Digital Strategy Advertising, Media
2008
N/A
2 - 9
$50,000+
Mobile App Development Web Development Web Design Branding E-commerce Development Social Media Marketing Internet Marketing
2007
$100 - $149
10 - 49
$10,000+
Mobile App Development Web Development UI-UX Design Web Design Social Media Marketing SEO Digital Strategy
1997
$100 - $149
10 - 49
$10,000+
Mobile App Development Web Development UI-UX Design Web Design
2010
$100 - $149
10 - 49
$100,000+
Mobile App Development Web Development UI-UX Design Web Design
1998
$100 - $149
10 - 49
$2,500,000+
Mobile App Development Web Development UI-UX Design
4.7 8 Reviews
2012
$100 - $149
10 - 49
$50,000+
Mobile App Development Web Development UI-UX Design Custom Software Development Web Design
4.8 7 Reviews
2004
$100 - $149
10 - 49
$50,000+
Mobile App Development Web Development Web Design Branding Social Media Marketing Digital Strategy
2006
$100 - $149
2 - 9
$25,000+
Mobile App Development Web Development UI-UX Design Custom Software Development Web Design Internet of Things
2008
$50 - $99
10 - 49
$25,000+
Mobile App Development UI-UX Design Custom Software Development Enterprise App Modernization Internet of Things
2007
$25 - $49
50 - 249
$5,000,000+
Content Management System E-commerce Development Enterprise App Development Internet of Things Mobile App Development Web Development
1998
$150 - $199
10 - 49
$50,000+
Mobile App Development Web Development VR App Development AR App Development UI-UX Design
1997
$150 - $199
50 - 249
$10,000+
Mobile App Development Web Development UI-UX Design Custom Software Development Enterprise App Modernization Web Design E-commerce Development Cloud Solutions
2008
$150 - $199
10 - 49
$50,000+
Mobile App Development Web Development UI-UX Design Web Design Digital Strategy Content Management System
2014
< $25
2 - 9
$25,000+
Mobile App Development Web Development Custom Software Development E-commerce Development Enterprise App Development
2002
$150 - $199
2 - 9
$25,000+
Mobile App Development Web Development UI-UX Design Custom Software Development Web Design
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FAQ

Frequently Asked Questions

Got questions about our specialized technology solutions? We have the answers to help you make informed decisions.

Start by writing down what "done" actually looks like for your project — the core features, the platforms it needs to run on, and a rough budget ceiling. From there, narrow your list to AI Development agencies in Seattle whose past work matches that scope, and put each one through the same first conversation: a real problem from your project, presented cold, to see how they think rather than how they pitch. The AI Development company in Seattle that asks the sharpest follow-up questions is usually the one worth a second meeting.

Seattle turns out a steady stream of engineering talent each year, and the stronger AI Development companies in the region have built real depth across current frameworks, cloud infrastructure, and mobile platforms rather than relying on a handful of senior people. For larger projects, ask specifically how a firm staffs beyond its founding team — that answer tells you whether their bench is genuinely deep or whether growth would strain it.

It does, in fairly practical ways — communication style, how formally decisions get escalated, and the pace at which changes get approved all vary by region, and Seattle has its own norms around each. None of this is a problem as long as expectations are set early; the AI Development engagements that go smoothly in Seattle are usually the ones where the client spent a little time upfront understanding how the team likes to work, not just what they can build.

There's no single number here — a AI Development company in Seattle might quote a few thousand dollars for a narrow, well-defined build and a much larger figure for a full product with integrations and ongoing support. The only way to get a real answer for your situation is to send the same brief to a handful of AI Development firms in Seattle and compare the itemized breakdowns, not just the bottom-line total.

You'll generally see three options from AI Development companies in Seattle: fixed-price for scopes that are already nailed down, time-and-materials for projects where the requirements are still taking shape, and a dedicated-team arrangement for products with no real end date. Fixed-price protects your budget but punishes scope creep; time-and-materials is more forgiving of changing plans but requires more active oversight from you. A AI Development firm in Seattle should be able to explain which one fits your situation, not just default to whichever is easiest for them.

Most will, as long as the scope is genuinely locked down — clear requirements, a defined timeline, and agreed deliverables. Fixed-price contracts with AI Development companies in Seattle tie payment to milestones rather than hours worked, which is good for budget predictability but only works if everyone agrees upfront on what a change request looks like. Make sure that process is spelled out in writing before work starts.

Value from a AI Development company in Seattle comes less from the rate you negotiate and more from whether the team understands the business problem behind the build. Firms that ask about your actual goals before proposing a solution, and that stick around to look at usage data after launch, tend to produce work that pays for itself. A AI Development partner in Seattle chasing the lowest quote rarely correlates with the best long-term outcome.

Look past the pitch deck: read the portfolio for technical substance, check independent reviews rather than the testimonials on the company's own site, and ask for a reference from a project similar in scope to yours. Then ask directly how they handle QA and what happens when a bug slips through after delivery. A AI Development company in Seattle that's confident in its process will answer that last question specifically, not with a vague reassurance.

The sweet spot for value tends to be mid-size AI Development companies in Seattle — big enough to have real process and accountability, small enough to keep overhead (and therefore price) reasonable. These firms usually can't compete with large agencies on brand name, so they compete on transparent, milestone-based pricing and a portfolio that speaks for itself. Ask to see completed work at roughly your budget level before assuming a firm is a fit.
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