Temporal vs Chroma
Durable execution platform for mission-critical workflows
vs. Open-source vector DB designed for AI apps — embeddings-first, dev-friendly
Pricing tiers
Temporal
Self-Hosted (OSS)
Free forever. MIT license. Run the Temporal cluster yourself on K8s/Docker.
$0 base (usage-based)
Cloud (usage-based)
Temporal Cloud. Pay per action ($25 per 1M actions base). Active user + storage also billed.
$0 base (usage-based)
Business Plan
Starts ~$100/mo commit. Multi-region, SSO, priority support.
Custom
Enterprise
Custom. HIPAA, PCI, dedicated clusters, enterprise SLA.
Custom
Chroma
Cloud — Free
$5 free credits. Great for trying it out.
Free
Cloud — Pro
$100 credits included, then usage-based. Dedicated resources, SOC2, priority support.
$0 base (usage-based)
Self-Host (OSS)
MIT-licensed. Embedded or Docker. Free forever.
$0 base (usage-based)
Cloud — Enterprise
Custom. VPC, compliance, dedicated support.
Custom
Free-tier quotas head-to-head
Comparing oss on Temporal vs cloud-free on Chroma.
| Metric | Temporal | Chroma |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
Temporal · 16 features
- Activities — Retryable units of work.
- Activity Retries — Declarative retry policies.
- Child Workflows — Nested workflow composition.
- Continue-As-New — Close + restart workflow to prune history.
- Nexus (cross-namespace) — Call workflows across namespaces/teams.
- Queries — Synchronous read of workflow state.
- Saga / Compensations — Rollback pattern via compensating activities.
- Schedules — Cron-like recurring workflows.
- Self-Host — Deploy cluster on your infra.
- Signals — Async messages into a running workflow.
- Timers — Durable sleeps — hours, days, months.
- Update — Synchronous RPC into workflow with validation.
- Visibility + Search Attrs — Query workflow state via Elasticsearch/native store.
- Web UI — Inspect workflow history, events, stack.
- Workflows — Durable, replayable, long-running functions.
- Workflow Versioning — Patch workflow code without breaking in-flight runs.
Chroma · 11 features
- Client-Server Mode — Run Chroma via Docker; clients connect over HTTP.
- Collections — Named groups of embeddings + metadata.
- Distributed (Cloud) — Horizontal scaling on Chroma Cloud.
- Embedded Mode — In-process Python — chromadb.Client() and go. Zero setup.
- Embedding Functions — Plug-in embedders (OpenAI, Cohere, SentenceTransformers, HF).
- Full-Text Search — BM25 + vector hybrid.
- Metadata Filters — Where-clause query language.
- Migration Tools — Import from Pinecone + other stores.
- Multi-Modal — Text + image embeddings (CLIP, etc.).
- Python + JS APIs — Same API shape across both SDKs.
- Serverless Cloud — Pay for storage + queries, auto-scale.
Developer interfaces
| Kind | Temporal | Chroma |
|---|---|---|
| CLI | temporal CLI | — |
| SDK | Temporal Go SDK, temporalio (Python), @temporalio (TypeScript), Temporal Java SDK, Temporal .NET SDK, Temporal PHP SDK | chromadb (JS/TS), chromadb (Python) |
| REST | — | Chroma HTTP API |
| MCP | — | Chroma MCP |
| OTHER | Temporal gRPC API, Temporal Web UI | Docker Server, Embedded Mode (in-process Python) |
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