$0/ month
Learn, evaluate, and publish a small demo.
- 1M reads
- 25k mutations
- 10k hybrid searches
- 250 MB hot storage
- Hard cap · no card
Transparent usage pricing
Start small without a surprise bill.
Spark and Hobby subsidize development, education, open source, and personal projects behind hard caps. Production plans charge for four actions developers can measure.
$5/ month
Personal agents, portfolios, bots, and student teams.
- 2M reads
- 50k mutations
- 25k hybrid searches
- 1 GB hot storage
- Hard cap by default
$29/ month
One production application or a small product team.
- 10M reads
- 200k mutations
- 75k hybrid searches
- 3 GB hot storage
- Spend-controlled overage
$199/ month
Growing agent SaaS and multi-agent workloads.
- 75M reads
- 1.5M mutations
- 750k hybrid searches
- 25 GB hot storage
- Priority support target
Workload estimator
Model the bill before the architecture commits it.
This client-side estimator reads the package’s machine-readable pricing configuration. It is a proposal, not an active quote, and excludes optional generative model inference.
One mutation transaction accepts up to 25 atom/value operations or 64 KiB. One hybrid search hydrates up to 50 results. See the pricing document for complete proposed definitions.
Launch plan
$29 / month
Loading pricing model…
Four public meters
No credits to reverse-engineer.
Internal replication, index copies, checkpoints, and safety mirrors are platform implementation details—not extra customer line items.
Read operations
One point lookup, status check, bounded neighborhood fetch, or paginated response up to 100 KiB. Larger responses round to additional reads.
Mutation transactions
One all-or-nothing request up to 25 atom/value operations or 64 KiB. Failed transactions and idempotent retries bill zero.
Hybrid searches
One fused semantic, lexical, graph, exact, temporal, and policy query with hydration of up to 50 results.
Logical hot storage
The customer’s source episodes and logical context data. Internal index and replication amplification is absorbed by the platform.
Spend safety
Budget is part of the API contract.
Small plans stop expensive operations rather than silently upgrading. Production plans require a monthly ceiling and expose projected spend to administrators and automation.
Spark and Hobby hard caps
At a limit, writes and hybrid searches pause. Reads, export, deletion, and key revocation remain available.
Launch and Scale ceilings
Overage requires an explicit spend ceiling with alerts at 50%, 75%, 90%, and 100%, plus optional project sublimits.
Idempotent metering
Bill committed authoritative operations, not ingress attempts. Every invoice maps to a versioned rate card and immutable aggregate.
Subsidized access
Make the interesting projects affordable.
Credits should reveal the post-credit bill and require no positive review. Proposed programs target open source, education, research, public showcases, and design partners.
Open source
Up to $25/month for six months for qualifying public, securely maintained projects.
Education & research
Up to $25/month for six months for verified students, educators, and reproducible research.
Showcase
Up to $100/month for three months for technically valuable public examples with editorial approval.
Questions
Pricing without traps.
Does the estimate include model inference?
No. Standard embedding economics are part of the database planning model, but unrestricted generative extraction is BYO model key or provider cost plus a proposed 25% processing margin.
What happens when a free project reaches its limit?
Expensive writes or searches pause. Existing data stays readable and exportable; deletion and key revocation continue. Spark never auto-upgrades.
Why is Hobby only $5?
It is intentionally subsidized as a bridge between a demo and production. Its default hard cap protects both the developer and the platform from accidental loops.
Are these final commercial prices?
No. They are a launch recommendation backed by explicit cost assumptions. Real workload telemetry and production benchmarks must validate the rate card before commitments.