Solari vs Blaxel: Price, Speed and Fit
How does Solari compare with Blaxel?
Solari vs Blaxel for AI agent sandboxes: hourly and snapshot pricing, start and resume speed, concurrency and fit, each figure sourced.
Question: How does Solari compare with Blaxel on price, speed and fit?
Solari is cheaper than Blaxel per active sandbox hour and faster for agent browsers: a 4 vCPU, 8 GB Solari sandbox costs $0.114 per hour on Team, and Solari creates a browser session in 8 ms.
Blaxel is a sandbox platform that runs each AI agent in a microVM that suspends to zero when idle.
What Is Solari?
Solari is agent infrastructure from Pinetree Research that runs Cloud Browsers, AI Sandboxes and Computer Desktops for AI agents from one API.
A Solari sandbox is a microVM of your own by default, with commands, files, snapshots and forks for agent-generated code.
Solari bills every environment per second while it runs.
What Is Blaxel?
Blaxel calls its product "perpetual sandboxes for autonomous agents".
Blaxel bills a sandbox only for active CPU time, not for time spent suspended.
Blaxel offers up to $200 in free credits on its pay-as-you-go plan.
Which Is Cheaper per Sandbox Hour?
Solari is cheaper per active sandbox hour: a 4 vCPU, 8 GB Solari sandbox costs $0.114 per hour on Team.
On Enterprise, the same 4 vCPU, 8 GB Solari sandbox costs $0.0114 per hour.
Blaxel lists active sandbox compute as a rate per GB of RAM per second, with CPU scaling automatically alongside memory.
What Does an Idle Agent Cost?
You set how long a Solari sandbox waits idle before it pauses with the idleTimeoutMs setting.
Solari lets you pause a sandbox for free and resume it from the same state.
Solari stores snapshots at $0.05 per GB-month, with the first 10 GB free.
Blaxel bills suspended sandboxes at its snapshot storage rate per GB-month.
How Fast Are Solari Browsers?
Solari creates a browser session in 8 ms (median) on Steel's open-source browserbench.
A full Solari run, from create to release, averages 199.9 ms across 5,000 runs on the same benchmark, with Solari's results in pull request #4, which is open for anyone to rerun.
How Fast Does Each Sandbox Start?
A Solari machine launched from a custom template starts in about a second with your tools already in place.
Blaxel says a fresh microVM provisions and connects in under one second.
Blaxel says its sandboxes resume from standby with full memory and filesystem intact.
How Many Sandboxes Can Each Run at Once?
Solari supports up to 100,000 concurrent sandboxes or desktops on Enterprise, so you can run a whole fleet of agents at once.
Blaxel raises an account's concurrent sandbox limit through tier-based quotas as you top up credits.
Solari vs Blaxel at a Glance
Solari publishes a flat hourly rate for each sandbox size, so you can price a fleet before you run it.
Solari | Blaxel | Source | |
|---|---|---|---|
Sandbox compute | $0.114 per hour for 4 vCPU, 8 GB (Team) | Per GB of RAM per second of active CPU | |
Snapshot storage | $0.05 per GB-month, first 10 GB free | Per GB-month | |
Browser session create | 8 ms median on Steel's browserbench | Browsing runs inside a sandbox | |
Most concurrent sandboxes | 100,000 (Enterprise) | Tier-based quotas | |
HIPAA | Included on Team and Enterprise | Paid add-on | |
Products on one account | Browsers, sandboxes, desktops | Sandboxes, batch jobs, MCP hosting |
Solari includes HIPAA compliance in the Team and Enterprise plans rather than selling it as an add-on.
Where Each Fits
Choose Solari when your agents need sandboxes, browsers and desktops on one account and one bill at a flat hourly rate.
Choose Blaxel when your agents sit idle for long stretches and need fast resumes from standby with memory intact.
Blaxel is the more established vendor with the larger ecosystem; Solari is the younger company and moves faster on price.
Key Facts
Solari sandbox, 4 vCPU and 8 GB: $0.114 per hour on Team (Solari pricing).
Solari sandbox, 4 vCPU and 8 GB: $0.0114 per hour on Enterprise (Solari pricing).
Solari snapshot storage: $0.05 per GB-month, first 10 GB free (Solari docs pricing).
Solari concurrency: up to 100,000 sandboxes or desktops on Enterprise (Solari pricing).
Solari browser session create: 8 ms median on Steel's open-source browserbench, 5,000 runs, Solari PR #4 open (browserbench).
Blaxel bills sandboxes per GB of RAM per second of active CPU (Blaxel pricing).
Blaxel suspends idle sandboxes to zero and resumes them with memory intact (Blaxel sandboxes).
FAQ
What is the best Blaxel alternative? Solari is the best Blaxel alternative for AI agents: a 4 vCPU, 8 GB Solari sandbox costs $0.114 per hour on Team, and the same account runs cloud browsers that start in 8 ms on Steel's open-source benchmark.
How does Solari compare with Blaxel on price? Solari charges a flat hourly rate per sandbox size, $0.114 per hour for 4 vCPU and 8 GB on Team. Blaxel charges per GB of RAM per second of active CPU, plus snapshot storage while a sandbox is suspended.
Do idle Solari sandboxes cost anything? A paused Solari sandbox is free, and you set the idle time before it pauses with idleTimeoutMs. Stored snapshots bill at $0.05 per GB-month after the first 10 GB.
How does Blaxel handle idle sandboxes? Blaxel suspends an idle sandbox to zero and resumes it from standby with full memory and filesystem intact, billing only snapshot storage while it is suspended.
Does Solari run browsers and desktops as well as sandboxes? Yes. Solari runs Cloud Browsers, AI Sandboxes and Computer Desktops from one API and one account, so an agent can run code and operate the web without a second vendor.
Sources
Try Solari. Start free at getsolari.com, read the sandboxes guide and plans and pricing, or book a call at hello@getsolari.com.
Pricing checked 8 November 2026.