Compare AI tools

	Devin A	Lex A	Adobe Firefly A	Replicate S
Tagline	Cognition Labs' autonomous coding engineer.	Google Docs with an AI collaborator baked in.	Commercially safe image gen, deeply integrated with Photoshop.	Run any open-source AI model with an API call.
Category	Agents	Writing	Image	Dev Platform
Pricing	$500/mo	Free + $12/mo	Free + included with Creative Cloud	Pay per second of compute
Best for	Engineering teams offloading tickets. Ops/platform work.	Essays, long-form drafts, thinking on the page.	Anyone in Creative Cloud. Brands that need copyright clarity.	Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths	Works like an engineer — takes Slack tasks, opens PRs Handles multi-hour engineering work Reports back with what it did	Clean writing UX — distraction-free +++ prompt triggers AI help Collaboration + AI feedback together	Trained on licensed content — commercially safe Generative Fill in Photoshop is incredible Native to Adobe ecosystem	Tens of thousands of models (image, video, audio, LLMs) One-line API for any model Cog framework for custom model deploy
Weaknesses	Expensive Best for well-scoped tasks Not for solo hobbyists	Less feature-rich than Google Docs AI ceiling below dedicated tools	Aesthetic ceiling below Midjourney Tied to Adobe subscription	Cold starts on less-popular models Pricing gets real at scale
Kai's verdict	A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.	A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.	S-tier inside Photoshop (Generative Fill). B-tier standalone.	S-tier for open-source model APIs. The default in this space.
Link	Open →	Open →	Open →	Open →