Staxly

Convex vs Flagsmith

The reactive database where queries are TypeScript code
vs. Open-source feature flags + remote config — SaaS, private cloud, self-host

Convex websiteFlagsmith website

Pricing tiers

Convex

Starter (Free)
Free with overage via usage-based billing. Great for prototypes.
Free
Professional
$25/developer/month. Overage: $2/M function calls. Daily backups, email support, custom domains.
$25/mo
Business / Enterprise
From $2,500/month. SAML/SSO, SLA, dedicated deployments, Slack Connect support.
$2500/mo
Convex website

Flagsmith

Free
$0. 50,000 API requests/mo. 1 team member. Unlimited flags. Community support.
Free
Self-hosted
$0 (OSS). Host yourself via Docker/K8s. Fair-source license (non-compete).
$0 base (usage-based)
Start-up
$40/mo. 1,000,000 API requests/mo. 3 team members. Standard support.
$40/mo
Scale-up
$200/mo. 5,000,000 API requests. 10 team members. Priority support + SLA.
$200/mo
Enterprise
Custom. Unlimited API requests, SSO, SAML, RBAC, audit logs, on-prem.
Custom
Flagsmith website

Free-tier quotas head-to-head

Comparing starter on Convex vs free on Flagsmith.

MetricConvexFlagsmith
db storage gb0.5 GB
deployments40 deployments
egress gb month1 GB/month
file storage gb1 GB
function calls month1000000 calls/month
team members6 users

Features

Convex · 18 features

  • ActionsNon-deterministic functions for external I/O (fetch, AI APIs, email). Cannot rea
  • AuthenticationConvex Auth (built-in) or BYO provider (Clerk, Auth0, Kinde, WorkOS). ID tokens
  • Convex AgentsAI agent framework with durable memory, threads, tool use. Works with OpenAI / A
  • Convex AuthFirst-party auth library: passwords, magic links, OAuth, phone — stored in your
  • Convex ComponentsReusable backend modules (rate limiter, workflow, aggregate, action-retrier, etc
  • Cron JobsRecurring schedules defined in convex/crons.ts. UTC, cron-style patterns.
  • Durable WorkflowsLong-running multi-step workflows with retries and at-least-once guarantees.
  • Exception ReportingAuto-capture errors to Sentry, Axiom, Datadog.
  • File StorageUpload/download via storage API. Returns storage IDs referenced in documents.
  • Full-Text SearchBM25 search index on table fields. withSearchIndex query helper.
  • HTTP ActionsExpose public HTTP endpoints for webhooks, OAuth callbacks, third-party integrat
  • Log StreamsStream function logs to Axiom, Datadog, Sentry. Pro+.
  • MutationsTransactional write functions. All reads + writes in one mutation are ACID; conf
  • Preview DeploymentsEvery Git branch gets its own isolated deployment. Integrates with Vercel/Netlif
  • QueriesDeterministic read-only TS functions. Automatically cached and re-run when under
  • Real-Time SubscriptionsuseQuery auto-subscribes; server invalidates when data a query read changes. No
  • Schedulerschedule.after / schedule.at — enqueue functions to run later. Durable, survives
  • Vector SearchNative vector index on tables. withIndex + filter fields. Up to 4096 dims.

Flagsmith · 14 features

  • A/B TestingMultivariate flag splits.
  • Audit LogFull history of flag changes.
  • Change RequestsApproval workflow for flag changes.
  • Edge APIGlobal low-latency flag eval.
  • Feature FlagsBoolean + multivariate + JSON flags.
  • Local EvaluationServer SDKs eval flags locally — no per-req API call.
  • Percentage RolloutsGradual traffic ramp.
  • Remote ConfigNon-boolean config values.
  • Role-Based AccessFine-grained permissions.
  • Scheduled FlagsTime-based flag changes.
  • SegmentsRule-based targeting.
  • Self-HostingDocker/Helm install.
  • SSO + SAMLEnterprise SSO.
  • WebhooksOutbound event streaming.

Developer interfaces

KindConvexFlagsmith
CLIConvex CLIFlagsmith CLI
SDKAndroid / Kotlin Client, iOS / Swift Client, JavaScript/TypeScript Client, Next.js Integration, Python Client, React Client (useQuery), Rust Client, Svelte Client, Vue Clientflagsmith-android, flagsmith-go, flagsmith-ios, flagsmith-java, flagsmith-js (browser), flagsmith-nodejs, flagsmith-python, flagsmith-ruby
RESTDeploy / Dashboard API, HTTP ActionsFlagsmith REST API
OTHERWebSocket SubscriptionsFlagsmith Dashboard, Flagsmith Webhooks
Staxly is an independent catalog of developer platforms. Outbound links to Convex and Flagsmith are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.

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