Loops vs Chroma
Email marketing for SaaS — loops, transactional, campaigns in one
vs. Open-source vector DB designed for AI apps — embeddings-first, dev-friendly
Pricing tiers
Loops
Free
1,000 subscribed contacts. 4,000 sends/month. All features. Loops footer on emails.
Free
Paid — 1.5k
1,500 contacts. Unlimited sends. No footer.
$15/mo
Paid — 5k
5,000 contacts. Unlimited sends.
$49/mo
Paid — 10k
10,000 contacts.
$99/mo
Paid — 25k
25,000 contacts.
$199/mo
Paid — 50k
50,000 contacts.
$349/mo
Custom
>100k contacts — contact sales.
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 free on Loops vs cloud-free on Chroma.
| Metric | Loops | Chroma |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
Loops · 12 features
- API Keys — Scoped keys for testing vs production.
- Audiences (Segments) — Filter contacts by properties + event behavior.
- Campaign Analytics — Open/click/unsubscribe rates, heatmaps, A/B significance.
- Campaigns — One-off broadcasts to audience segments. Schedule + A/B test subject.
- Contacts — Contact records with custom properties (strings, numbers, booleans, dates).
- Email Editor — Visual block-based + Markdown + HTML modes.
- Events — Send events to trigger loops/journeys or filter audiences.
- Loops (Automations) — Event-triggered automation flows with delays + conditions.
- Mailing Lists — Opt-in lists with subscribe/unsubscribe preferences per list.
- Template Library — Pre-built templates for SaaS use cases (onboarding, digest, launch).
- Transactional API — Send transactional emails (receipts, password resets) via /transactional endpoin…
- Webhooks — Subscribe to contact/event changes.
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 | Loops | Chroma |
|---|---|---|
| SDK | @loops/loops, loops-py | chromadb (JS/TS), chromadb (Python) |
| REST | Loops REST API | Chroma HTTP API |
| MCP | — | Chroma MCP |
| OTHER | Webhooks | Docker Server, Embedded Mode (in-process Python) |
Staxly is an independent catalog of developer platforms. Some links to Loops and Chroma may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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