- Free allowance
- 'Up to $200 in free credits' on the pay-as-you-go plan, with 'Tier 0 | Free | 10' concurrent sandboxes.
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tierpaid plans from USD 30.22/month
- Identity
- emailno card, no phone
- Binding limit
- retention-clampedsandbox expiry at Tier 0 is at most 7 days
- Evidence
- documented12 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-12-05checked 2026-11-04 (live); stale on 2026-12-05
| Free tier | 'Up to $200 in free credits' on the pay-as-you-go plan, with 'Tier 0 | Free | 10' concurrent sandboxes. The page does not say what 'up to' depends on, and no expiry is stated. unit mixed; metered on wall-clock; Credits are topped up to raise the tier; the free grant is bounded by a qualifier the page never explains. |
|---|
| Price | none stated |
|---|
| Limits | - volume-quota 'Up to $200 in free credits', qualifier unexplained source
- retention-clamped (binding) sandbox expiry at Tier 0 is at most 7 days source
- per-ip-shaping outbound can be restricted to a domain allowlist through the proxy source
Every sandbox scales to zero after inactivity whether or not an expiry policy is set, so 'running' is not a state Blaxel holds by default. |
|---|
| Binding | retention-clamped A 7-day maximum existence beats the credit: USD 200 cannot buy a month because no single sandbox is allowed to live that long at Tier 0. |
|---|
| Identity | email Signup is 'Start for free' with no card shown on the pricing page; no hold is mentioned. Raising the tier requires a top-up, which introduces a card at that point. |
|---|
| Egress | Internet egress traffic is listed as Included on https://blaxel.ai/pricing; no byte allowance and no overage price are published. Outbound traffic can be constrained by a per-domain firewall and a proxy, which is a policy control rather than a meter. |
|---|
| Per-object cap | No per-sandbox vCPU or memory cap is published on the pricing page; the Custom plan advertises 'Up to 256 GB RAM per sandbox or job' as an upgrade over pay-as-you-go. |
|---|
| Retention | Sandboxes sit 'on automatic standby' with memory and filesystem snapshotted; Tier 0 and Tier 1 'enforce expiration dates (Tier 0 and 1, with respectively up to 7 and 30 days)'. In higher tiers unlimited persistence is permitted. (7 days) |
|---|
| Interface | rest, cli REST API, TypeScript, Python and Go SDKs, a CLI and an MCP server; no SSH endpoint is documented on the platform: SSH into a sandbox is reached by running Tailscale SSH inside it, and 'bl connect sandbox' opens an interactive terminal similar to SSH |
|---|
| Tooling | not stated |
|---|
| Reliability | 'Automatic scale-to-zero after 5s inactivity' means a process with no client connection is suspended unless keep-alive is arranged; the docs offer process keep-alive as the workaround. |
|---|
| Notes | Blaxel prices CPU inside the RAM rate: USD 0.0000115 per GB of RAM per second is USD 0.0414 per GB-hour, so a 1 GB sandbox is USD 0.0414 an hour and USD 200 would be 4,831 hours, or a 4 GB sandbox USD 0.1656 an hour and 1,208 hours. Neither number is reachable as a month of uptime because of the 7-day Tier 0 expiry and the 5-second standby. The borrow against it: it is the cheapest per GB-hour of the sandbox providers here, and the right tool for bursty agent work. |
|---|
| Evidence note | documented The credit, the rates and the tier-0 expiry are first-party. What is not established: whether a keep-alive process suspends the 5-second standby timer in practice, and whether Tier 0 counts the 7-day limit from creation or from last wake. |
|---|
| Parsed numbers | - price USD 12.42 10 hours a day / month
- price USD 30.22 / month
- has-free-tier 1
|
|---|