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OpenClaw sits at 388K GitHub stars, Hermes Agent at 237K as of August 2026, which puts both in the top handful of repositories on the platform. Both promise the same headline: a personal AI agent on hardware you control, wired into your messaging apps.
Run them side by side for a few weeks, as we did, and it becomes obvious they are built around different bets. OpenClaw bets on integration breadth. Hermes bets on a lean core that improves itself. Which one you should self-host depends on which bet matches your use case - and the VPS bill is not the same either.
TL;DR: Which One Should You Pick?
Pick OpenClaw if you need a channel Hermes does not cover - iMessage, Matrix, Microsoft Teams, Google Chat, Zalo - or you want the largest MCP tool registry, and you are fine paying for an 8 to 16 GB VPS to host it properly.
Pick Hermes Agent if you want a lightweight agent that runs on a 4 GB box, writes its own reusable skills after complex tasks, and gives you a documented path to a fully local, no-external-API setup.
OpenClaw vs Hermes Agent at a Glance
| OpenClaw | Hermes Agent | |
|---|---|---|
| GitHub stars (Aug 2026) | ~388K | ~237K |
| Core stack | TypeScript / Node.js + MCP tool registry | Python 3.11 + skills on the agentskills.io standard |
| License | NOASSERTION (check before commercial use) | MIT |
| Messaging gateways | WhatsApp, Telegram, Slack, Discord, Signal, iMessage, Matrix, Teams, Google Chat, Zalo | Telegram, Discord, Slack, WhatsApp, Signal, Email, Home Assistant, CLI |
| Self-improvement | No (static skills) | Yes, writes skills after complex tasks and refines them in use |
| Cross-session recall | Per-conversation | SQLite FTS5 search over past sessions |
| Realistic RAM floor | 4 GB, 8 GB with memory module | 4 GB in BYO-model mode |
| Resident memory | 3-4 GB with gateways enabled | 300-500 MB plus gateways |
| Non-VPS deployment | Local or container | Also Docker, SSH, Modal, Daytona, Vercel Sandbox |
| Local LLM path | Possible, thinly documented | First-class, documented |
Where OpenClaw Wins
Integration breadth is the whole pitch, and it is real - just not where most comparison posts put it. Both agents ship WhatsApp. What OpenClaw adds on top is iMessage, Matrix, Microsoft Teams, Google Chat and Zalo, through a channel-plugin system that keeps growing. The MCP registry means most business tools you care about already have a connector, and at 388K stars the community is large enough that fixes land fast.
The cost is footprint. The README’s 2 GB demo figure is the agent core only. Enable two gateways and the tool registry and you are at 3 to 4 GB resident before the first conversation, plus 1 to 2 GB of audit logs per week. Our full breakdown is in the best VPS for OpenClaw guide.
Where Hermes Agent Wins
Hermes is what you run when you read the OpenClaw requirements and winced. The orchestration layer plus gateways sits in a few hundred megabytes, because the heavy lifting happens at whatever OpenAI-compatible endpoint you point it at.
The learning loop is the genuinely new idea. After a complex task the agent writes a reusable skill, and those skills keep improving as they get used, so a workflow you run weekly gets cheaper in tokens over time. Past conversations stay searchable through an SQLite FTS5 index, which means the agent can pull up what you told it three weeks ago instead of asking again. Skills follow the agentskills.io open standard, so they are portable rather than locked to Hermes. Specs and GPU options are in the best VPS for Hermes Agent guide.
Two things matter specifically for a VPS budget. Hermes can run its terminal work on seven backends, and two of them - Modal and Daytona - hibernate when idle and wake on demand, so a low-traffic personal agent can cost close to nothing between sessions rather than paying for a box that idles 23 hours a day. And if you are already running OpenClaw, hermes claw migrate imports your settings, memories, skills and API keys directly; imported skills land in ~/.hermes/skills/openclaw-imports/. Run it with --help for the dry-run options before committing.
VPS Requirements Compared
| Spec | OpenClaw | Hermes Agent (BYO model) |
|---|---|---|
| Minimum RAM | 4 GB | 4 GB |
| Comfortable RAM | 8-16 GB | 8 GB |
| Storage | 80 GB+ NVMe (log volume) | 80 GB NVMe (skill and session writes) |
| CPU | 2-4 vCPU | 2 vCPU |
| GPU | Only for local image tools | Only for local LLM path |
Concrete plans that hold up, with prices verified against the provider pages:
| Provider | Plan | Specs | Monthly | Fits |
|---|---|---|---|---|
| Hetzner | CX23 | 2 vCPU / 4 GB / 40 GB NVMe | 5.49 EUR net | Hermes, BYO model |
| Contabo | Cloud VPS 4 | 4 vCPU / 8 GB / 100 GB SSD | 5.50 EUR net | Either agent, best value |
| Contabo | Cloud VPS 6 | 6 vCPU / 12 GB / 200 GB | 7.50 EUR net | Full OpenClaw, or both side by side |
| Hetzner | CX33 | 4 vCPU / 8 GB / 80 GB NVMe | 8.49 EUR net | Full OpenClaw on NVMe |
| Hetzner | CCX23 | 4 vCPU / 16 GB / 160 GB NVMe | 85.99 EUR net | Dedicated vCPU, production teams |
Contabo’s entry plan doubled to 8 GB while staying at 5.50 EUR net, which is why it wins this table outright on value; Hetzner’s advantage is NVMe and network quality, not price. Note that Hetzner and Contabo quote net prices, so add your local VAT. The full provider ranking is in our VPS comparison.
Verdict
There is no universal winner here, only a fit question. OpenClaw is the maximalist option: every channel, every tool, at the price of a bigger server and a project that has already renamed itself once since launch. Hermes Agent is the minimalist option: a small, self-improving core that treats the model as a swappable backend and runs on the cheapest tier of a serious VPS.
Both projects move fast enough that any spec table ages within weeks, so re-check the READMEs before you commit to a plan size. And if you are already running OpenClaw, hermes claw migrate makes trying the alternative nearly free - which is a faster way to settle this for your own workload than any comparison table, including this one.
Frequently asked questions
Can I run OpenClaw and Hermes Agent on the same VPS?
Yes, if you size for OpenClaw. A 12 to 16 GB plan such as Contabo Cloud VPS 6 (6 vCPU / 12 GB, 7.50 EUR net) runs OpenClaw with two gateways plus a Hermes instance comfortably, since Hermes only adds 300 to 500 MB in bring-your-own-model mode. Keep them in separate Docker networks so a runaway tool call in one cannot exhaust the other's resources.
Which agent is cheaper to self-host, OpenClaw or Hermes Agent?
Less than it used to be. Hermes in bring-your-own-model mode sits at 300 to 500 MB, so a 4 GB box like Hetzner CX23 at 5.49 EUR net is plenty. OpenClaw wants 8 GB once the gateways and the MCP registry are live, but Contabo's entry plan is now 4 vCPU / 8 GB for 5.50 EUR net, so the monthly difference is cents. The real gap is headroom: on one 8 GB box Hermes leaves room for your other services, OpenClaw does not.
Does Hermes Agent support WhatsApp like OpenClaw does?
Yes. Hermes drives Telegram, Discord, Slack, WhatsApp, Signal, Email and Home Assistant from a single gateway process, so WhatsApp is not the deciding factor people assume it is. OpenClaw's channel list is still longer, adding iMessage, Matrix, Microsoft Teams, Google Chat and Zalo. Check for the specific channel you need instead of assuming either project is missing the mainstream ones.
Is OpenClaw or Hermes Agent better for a privacy-first setup?
Hermes Agent has the cleaner privacy story. Its skills and its FTS5 conversation index are plain files under ~/.hermes, and the project documents a fully offline path with a self-hosted model on a GPU box. OpenClaw can run against local models too, but its strength is breadth of hosted integrations, and several gateways inherently route messages through third-party platforms.