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Castor vs. Sprout Social

Sprout Social helps a team organize and schedule. Castor is the agent that actually writes and sends the reply, from your real product information.

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What this is: A comparison for founder-run D2C sellers deciding between Sprout Social, a social media management platform built for marketing teams, and Castor, an AI agent that answers Instagram, Facebook and WhatsApp DMs automatically.

Different jobs

A scheduler and shared inbox vs. an agent that replies

Sprout Social solves a real problem for larger teams: scheduling posts across accounts, tracking analytics, and giving several people a shared view of incoming messages so nothing falls through the cracks. What it doesn’t do is write the reply for you, a person on your team still reads each DM and types the answer.

Castor solves a narrower, different problem: it reads the incoming DM and answers it automatically, using your real product, pricing, and policy details, with no person needing to type a response at all. For a founder-run shop where the bottleneck is answering messages, not organizing a team around them, that's the part that actually saves time.

CastorSprout Social

Primary jobAnswers DMs automaticallySchedules posts & organizes team inbox

Built forA founder-run shop, one agentMarketing teams & agencies

Replies without a person typing Yesno, a person still replies

Captures & structures orders Yes✕ No

Answers grounded in your real product info Yesn/a

Pricing model$49-$99/mo flatscales with seats & accounts

FAQ

Castor vs. Sprout Social FAQ

Is Castor a replacement for Sprout Social?+

Only if what you actually need is DMs answered automatically. Sprout Social is built for teams managing scheduling, analytics, and a shared inbox across accounts, it organizes the work of replying, but a person still has to write each reply. Castor generates the reply itself, from your real product and policy information.

Does Sprout Social use AI to answer customer messages?+

Sprout Social is primarily a management and scheduling platform, not a DM-answering agent, its value is organizing your team's workflow across accounts, not replacing the person typing the reply. Castor's entire job is generating that reply automatically.

Which is cheaper for a small, founder-run shop?+

Sprout Social is priced and marketed toward marketing teams and agencies managing several accounts, with cost that scales with seats and accounts. Castor is a flat $49-$99/month for one business, one agent, with a free tier to test on first.

Could I use both?+

Some larger teams do, Sprout Social for scheduling and cross-channel analytics, Castor for the actual DM replies and order capture. For a founder-run D2C shop without a marketing team, Castor alone usually covers what's needed.

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