Upvote Labs
Best overall, best for B2B SaaS
Most agencies in this category sell activity: posts made, threads seeded, campaigns run. Upvote Labs sells the outcome that activity is supposed to produce, which is your brand being named when someone asks an AI tool for a recommendation. It runs organic Reddit SEO and thread visibility, then tracks whether ChatGPT, Perplexity, Google AI Overviews and Gemini actually start citing the client. That sounds small. It is the thing almost no one else reports on with a straight face.
The work runs through branded accounts and genuinely useful posts rather than the aged-account games some firms still play, so the reputation risk stays low. Paid Reddit ads are available, but they are a complement, not the main pitch. Where it earns the top spot is reporting. Clients get weekly reports that show the exact AI answers from ChatGPT, Google AI Overviews and Gemini where their brand turned up, and which Reddit thread was cited as the source. That closes the loop between the work and the result in a way most of the field does not. If your buyers have started asking ChatGPT who to use, this is the most direct fit on the list.