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Flexprice
flexprice.org
What it is
Flexprice provides usage metering, pricing logic, and invoice generation for AI and SaaS teams. Usage events can arrive through a REST API, SDKs, or direct Kafka integration, with deduplication, idempotency keys, and exactly-once aggregation across time windows. Its pricing engine supports flat, per-seat, graduated, tiered, volume-based, credit-pack, and minimum-commitment models configured in the UI. Invoice generation covers proration, mid-cycle plan changes, multiple currencies, tax line items, PDF delivery, payment collection through Stripe or Braintree, and dunning. Listed integrations include Stripe, Salesforce, HubSpot, Segment, AWS, GCP, Kafka, Snowflake, dbt, Postgres, Slack, and Zapier. The free Developer plan includes up to 100,000 events per month, one pricing plan, and 14-day data retention. Growth costs $299 a month and allows up to 5,000,000 events per month; additional events cost $0.06 per 10K. Flexprice is available via API and web.
Spec sheet
- What it does
- Flexprice provides usage metering, pricing logic, feature management, subscription billing and invoice generation for AI and SaaS products.Read 19 Oct 2026 · docs.flexprice.io
- Purpose
- Flexprice handles usage metering, pricing logic, and invoice generation for AI and SaaS teams.Read 29 Sep 2026 · flexprice.org
- Intended users
- Flexprice describes its product as billing infrastructure for AI and SaaS teams, including engineering and finance teams.Read 29 Sep 2026 · flexprice.org
- API
- Flexprice exposes a REST API for event ingestion and a documented API reference with OpenAPI tooling.Read 19 Oct 2026 · flexprice.org
- Integrations
- The homepage lists Stripe, Salesforce, HubSpot, Segment, AWS, GCP, Kafka, Snowflake, dbt, Postgres, Slack and Zapier integrations.Read 19 Oct 2026 · flexprice.org
- License
- The core repository is AGPLv3, while the company says some enterprise-edition code requires a commercial license under an open-core model.Read 19 Oct 2026 · github.com
- Headquarters
- San Francisco, CARead 28 Sep 2026 · flexprice.org
- Founded
- 2021Read 28 Sep 2026 · flexprice.org
- Changelog activity
- The October 12, 2026 changelog entry added customer billing currencies, foreign-exchange conversion and Stripe Tax support.Read 19 Oct 2026 · docs.flexprice.io
- Company details
- The homepage says Flexprice was founded in 2021 and is based in San Francisco, California.Read 29 Sep 2026 · flexprice.org
- Company founders
- Crunchbase names Manish Choudhary, Koshima Satija and Nikhil Mishra as founders.Read 19 Oct 2026 · crunchbase.com
- Company founding
- The official homepage states that Flexprice was founded in 2021 in San Francisco, California.Read 19 Oct 2026 · flexprice.org
- Company headquarters
- The registered office is listed in Gurugram, Haryana, India.Read 19 Oct 2026 · flexprice.io
- Company legal name
- The privacy policy identifies the operator as Squirrelly Technologies Private Limited.Read 19 Oct 2026 · flexprice.io
- Company size
- Crunchbase lists Flexprice in the 11–50 employee range.Read 19 Oct 2026 · crunchbase.com
- Credits and wallets
- Documentation describes prepaid or promotional credits, automatic top-ups, expirations and wallet balances.Read 19 Oct 2026 · docs.flexprice.io
- Data protection
- The privacy policy says data is encrypted in transit and at rest, protected by access controls, and processed on behalf of customers without using customer data to train AI models.Read 19 Oct 2026 · flexprice.io
- Documentation scope
- The documentation navigation includes concepts, cookbooks, API reference, developers, integrations, changelog, self-hosting and security/status resources.Read 19 Oct 2026 · docs.flexprice.io
- Enterprise terms
- The Enterprise plan lists custom event volume, a dedicated Kafka cluster, SSO/SAML, custom integrations, and a dedicated Slack channel and TAM.Read 29 Sep 2026 · flexprice.org
- Event scale
- The homepage states that Flexprice handles 100M+ events per month and has under 50 ms p99 ingestion latency.Read 29 Sep 2026 · flexprice.org
- Feature management
- Teams can define features, attach usage limits and gate customer access through entitlements.Read 19 Oct 2026 · docs.flexprice.io
- Free plan limits
- The Developer plan includes 100,000 events per month, one pricing plan, and 14-day data retention.Read 29 Sep 2026 · flexprice.org
- Funding status
- Crunchbase categorizes Flexprice as a private seed-stage company and lists two funding rounds, with amounts obscured on the public page.Read 19 Oct 2026 · crunchbase.com
- Growth overage
- The Growth plan allows up to 5,000,000 events per month and lists $0.06 per additional 10K events.Read 29 Sep 2026 · flexprice.org
- Invoice accuracy
- The homepage states a 99.95% invoice accuracy SLA.Read 29 Sep 2026 · flexprice.org
- Invoicing
- Flexprice handles proration, mid-cycle changes, multi-currency invoices, tax line items, PDF delivery, payment collection, dunning and retries.Read 19 Oct 2026 · flexprice.org
- JavaScript SDK capabilities
- The SDK covers customers, plans, events, invoices, payments and entitlements, with TypeScript types, retries and error handling.Read 19 Oct 2026 · github.com
- JavaScript SDK requirements
- The official JavaScript SDK requires Node.js 18 or newer and supports both CommonJS and ESM.Read 19 Oct 2026 · github.com
- Limit: self-hosting complexity
- A Reddit user reported a difficult front-end and back-end self-hosting setup and said the web documentation led them in circles.Read 19 Oct 2026 · reddit.com
- Metering
- Usage events can be streamed through REST API, SDKs, or direct Kafka integration, with deduplication, idempotency keys, and exactly-once aggregation across time windows.Read 29 Sep 2026 · flexprice.org
- Notable news
- On July 2, 2025, Flexprice announced its public status page, SOC 2 compliance, public roadmap and Slack community.Read 19 Oct 2026 · flexprice.io
- Praise: API and integrations
- G2 and Product Hunt reviewers praised robust APIs, integrations and the ability to avoid building custom metering and entitlement code.Read 19 Oct 2026 · producthunt.com
- Praise: setup speed
- G2 reviewers praised quick setup and fast progress toward monetization.Read 19 Oct 2026 · g2.com
- Praise: support
- A G2 reviewer praised proactive support through Slack and calls during initial setup.Read 19 Oct 2026 · g2.com
- Pricing models
- Its pricing engine supports flat, per-seat, graduated, tiered, volume, credit-pack and minimum-commitment models.Read 19 Oct 2026 · flexprice.org
- Rating on G2
- 4.8 out of 5 from 2 reviewsRead 19 Oct 2026 · g2.com
- Rating on Product Hunt
- 5.0 out of 5 from 2 reviewsRead 19 Oct 2026 · producthunt.com
- Repository activity
- The public GitHub repository showed 80 issues and 120 pull requests when opened.Read 19 Oct 2026 · github.com
- SDKs
- Official documentation identifies JavaScript, Python and Go SDKs.Read 19 Oct 2026 · docs.flexprice.io
- Security compliance
- Flexprice states that it is SOC 2 Type II, GDPR and ISO 27001 compliant.Read 19 Oct 2026 · flexprice.io
- Self-hosting
- Flexprice documents running the community edition on customer infrastructure and provides Docker-based setup instructions in its repository.Read 19 Oct 2026 · github.com
- Status
- The official status page showed Cloud API and Admin Portal operational with 100% uptime over the displayed 30-day period.Read 19 Oct 2026 · status.flexprice.io
- Usage metering
- The platform accepts custom usage events and aggregates them in real time, with deduplication, idempotency keys and exactly-once aggregation claims.Read 19 Oct 2026 · flexprice.org
- Webhooks
- The JavaScript SDK documentation lists webhook events for payments, invoices, subscriptions, customers, wallets, features, entitlements and credit notes.Read 19 Oct 2026 · github.com
Plans and prices
Developer Free Up to 100,000 events/month · 1 pricing plan · REST API + 1 SDK · Basic invoice generation · Email support · 14-day data retention Read 29 Sep 2026 · flexprice.org
Developer Free $0/month up to 100,000 events/month · 1 pricing plan · REST API + 1 SDK · basic invoice generation · email support · 14-day data retention Read 19 Oct 2026 · flexprice.org
Growth $299 a month $299/month up to 5,000,000 events/month · $0.06 per additional 10K events · unlimited pricing plans · all SDKs + Kafka connector · multi-currency invoicing · dunning and retry logic · revenue analytics · priority support Read 19 Oct 2026 · flexprice.org
Enterprise Priced on request Custom 100M+ events/month · custom event-volume SLA · contractual 99.95% accuracy SLA · dedicated Kafka cluster · SSO/SAML · custom integrations · dedicated Slack channel and TAM Read 19 Oct 2026 · flexprice.org
Strong points and limits
Strong points
- Free Developer plan includes 100,000 events monthly.
- Supports seven listed pricing model types.
- Invoices handle proration and mid-cycle plan changes.
- Usage events can arrive through Kafka, SDKs, or REST API.
- Lists integrations including Stripe, Snowflake, and Slack.
Limits
- Free plan retains data for 14 days.
- Free plan allows one pricing plan.
- Growth overage is $0.06 per additional 10K events.
Who it suits
Flexprice suits engineering and finance teams at AI or SaaS businesses that need usage-based metering, configurable pricing, and invoice generation.
Flexprice in depth
Read the full write-up
Flexprice is a billing platform for AI and SaaS products, aimed at teams that need charges to track customer usage. It combines event metering with configurable pricing and invoice generation. The case for it is strongest when a product has varied usage-based pricing; the free tier is tightly capped, while meaningful scale starts at $299 a month.
Overview
Flexprice takes usage events and turns them into priced charges and invoices. Teams can send events by REST API, SDK, or Kafka and configure pricing in a UI. That combination suits products where bills change with consumption, but it is more infrastructure than a team with straightforward, fixed subscriptions may need.
Its rating options cover flat, per-seat, graduated, tiered, volume-based, credit-pack, and minimum-commitment models. This breadth helps accommodate different products and customer agreements. The trade-off is that the free Developer plan allows just one pricing plan, limiting how much of that flexibility a team can use at the entry level.
Key features
Metering and pricing
Deduplication, idempotency keys, and exactly-once aggregation across time windows address the risk of duplicate or inconsistent usage charges. Flexprice says it handles 100M+ events per month with under 50 ms p99 ingestion latency. Those figures make it a candidate for high-volume workloads, although the Developer plan’s 100,000-event monthly allowance is intended for much smaller starts.
Pricing models are configured in the UI, and the available methods range from per-seat charges to usage tiers, prepaid credit packs, and minimum commitments. That range is useful when a business needs different commercial structures, but the one-plan Developer limit means teams with multiple offers will need to move up to Growth.
Invoicing and integrations
Invoice generation handles proration, mid-cycle plan changes, multiple currencies, tax line items, PDF delivery, and payment collection through Stripe or Braintree. Dunning is also supported. This is a substantial billing workflow in one platform, particularly for teams handling plan changes and failed payments.
Integrations include Stripe, Salesforce, HubSpot, Segment, AWS, GCP, Kafka, Snowflake, dbt, Postgres, Slack, and Zapier. The breadth spans payment, customer, data, and cloud tools, making Flexprice relevant to teams that need billing to connect with more than a payment processor.
Pricing
The Developer plan costs nothing. It includes up to 100,000 events per month, one pricing plan, the REST API and one SDK, basic invoice generation, email support, and 14-day data retention. It is a sensible way to build and assess a small billing setup, but the low event allowance, single plan, and short retention period make it a poor fit for a mature product with multiple offers or a need to inspect older usage.
Growth costs $299 a month, billed $299/month. It raises the allowance to 5,000,000 events per month, with $0.06 per additional 10K events, and adds unlimited pricing plans, all SDKs plus a Kafka connector, multi-currency invoicing, dunning and retry logic, a revenue analytics dashboard, and priority support. It is the practical tier for a team operating several pricing plans or processing substantial usage. The overage charge is worth factoring into a variable-volume budget.
Enterprise has custom pricing. It covers 100M+ events per month and above, custom event-volume SLA, a contractual 99.95% accuracy SLA, a dedicated Kafka cluster, SSO/SAML, custom integrations, and a dedicated Slack channel and TAM. Those provisions target organizations with high event volumes or enterprise identity and support requirements; teams needing a published fixed price should compare alternatives.
Platforms
Flexprice is offered on API and web platforms. That combination fits teams integrating billing into a product while managing configuration through a web interface.
Who it's for
Flexprice is best suited to AI and SaaS engineering and finance teams building usage-based billing, especially when pricing varies by tier, volume, credits, or customer commitment. It is less compelling for a simple fixed-subscription business, or for a team whose needs already exceed the Developer limits but cannot justify a $299.00 USD monthly Growth subscription.
Pros and cons
Broad rating support: Seven pricing methods, including credit packs and minimum commitments, can serve varied billing structures.
Detailed invoice workflow: Proration, multi-currency, tax line items, payment collection, and dunning address common billing needs beyond calculating a charge.
Scalable event path: API, SDK, and Kafka ingestion, alongside the stated 100M+ monthly event capacity, make it relevant beyond low-volume products.
Restrictive free ceiling: 100,000 events per month, one pricing plan, and 14-day retention constrain the Developer plan for ongoing production use.
Growth has a substantial fixed cost: The $299/month entry point for paid service may not suit early teams that need more than Developer but have limited billing volume.
Alternatives
Usage-Based Billing Software is a useful place to compare other products in the category. Consider Aforo if a lower-volume free start is the priority: its Starter plan allows 50K events per month and includes all six pricing models, basic revenue intelligence, and Stripe integration. Lago is the alternative to consider when an AGPLv3-licensed, self-hosted open-source deployment matters most.
Solvimon may suit a team focused on AI usage metering for tokens and API calls: its AI Essentials plan is free for the first $3M, then charges 0.4% of volume, with qualification criteria applying. Credyt is worth considering for building and testing with its free-forever first 10 active wallets each month and full feature access in test mode.
Sequence CPQ is another option. OneBill is another option. BillingPlatform Accounts Receivable is another option. Ubersmith is another option.
Verdict
Choose Flexprice if your AI or SaaS product needs usage metering, flexible rating, and invoice workflows in one system, and Growth’s 5,000,000-event allowance fits your budget and volume. Its main draw is the range from event ingestion through invoicing; look elsewhere if you need generous free limits, longer retention at no cost, or a paid entry tier below $299 a month.
Verdict
Flexprice combines event metering, pricing configuration, and invoicing, with a free plan and a paid Growth tier at $299 a month. Check the Developer plan’s event, plan-count, and retention limits against your needs.
Where Specifiction places it
- Usage-Based Billing Software#1 of 269.1
