Helicone vs MongoDB Atlas
Open-source LLM observability — 1-line integration via proxy
vs. Managed MongoDB with search, vector, stream processing
Pricing tiers
Helicone
Hobby (Free)
10,000 requests/month. 7-day retention. 1 seat. Basic monitoring.
Free
Startup Discount
<2 years, <$5M funding: 50% off first year.
$0 base (usage-based)
Self-Hosted (OSS)
MIT-licensed. Run Helicone yourself for free.
$0 base (usage-based)
Pro
$79/month. 10k free + usage-based. Unlimited seats. Alerts, reports, HQL query language. 1-month retention.
$79/mo
Team
$799/month. 5 orgs, SOC-2 + HIPAA compliance, dedicated Slack, 3-month retention.
$799/mo
Enterprise
Custom MSA, SAML SSO, on-prem deploy, bulk discounts, forever retention.
Custom
MongoDB Atlas
M0 — Free
Shared cluster, 512 MB storage, 100 ops/sec, 32 MB sort memory. Learning/exploration.
Free
Flex — Serverless
Autoscales 0-500 ops/sec. 5 GB storage. Pay-as-you-go, up to ~$30/mo.
$8/mo
M2 — Shared
Shared, 2 GB storage. Staging / small apps.
$9/mo
M5 — Shared
Shared, 5 GB storage.
$25/mo
M10 — Dedicated
2 GB RAM, 2 vCPU, 10-128 GB storage. First dedicated tier.
$57/mo
M20 — Dedicated
4 GB RAM, 2 vCPU, 20-256 GB storage.
$144/mo
M30 — Dedicated
8 GB RAM, 2 vCPU, 40-512 GB storage.
$389/mo
M40 — Dedicated
16 GB RAM, 4 vCPU, 80 GB-1 TB storage.
$749/mo
M50 — Dedicated
32 GB RAM, 8 vCPU, 160 GB-4 TB storage.
$1440/mo
M60 — Dedicated
64 GB RAM, 16 vCPU.
$2844/mo
M80 — Dedicated
128 GB RAM, 32 vCPU, 750 GB-4 TB.
$5256/mo
M300 — Dedicated
384 GB RAM, 96 vCPU.
$15732/mo
Enterprise
Multi-region Advanced, private network, BYOK, dedicated support.
Custom
Free-tier quotas head-to-head
Comparing hobby on Helicone vs m0 on MongoDB Atlas.
| Metric | Helicone | MongoDB Atlas |
|---|---|---|
| backups | — | 0 backups |
| ops per sec | — | 100 ops/sec |
| sort memory mb | — | 32 MB |
| storage gb | — | 0.5 GB |
Features
Helicone · 16 features
- Alerts — Thresholds on error rate, latency, cost, usage. Pro+.
- Async Logging — Log AFTER the LLM call via SDK — zero added latency.
- Cost Tracking — Automatic cost calculation per call by provider/model.
- Dashboard — Request tables, aggregate metrics, cost breakdowns.
- Evaluators — LLM-as-judge + custom evaluators on runs.
- Experiments — A/B test different models/prompts.
- HQL (SQL over traces) — Query your logged data with SQL. Pro+.
- PII Redaction — Automatically scrub emails, credit cards, etc. from logs.
- Prompt Caching — Cache identical requests → save money.
- Prompts & Versions — Store + version + A/B test prompts.
- Proxy Mode — 1-line integration via base URL swap. Captures all requests.
- Rate Limiting — Per-user + per-key rate limit policies.
- Reports — Scheduled email reports with KPIs.
- Self-Hosting — Docker + k8s deployment.
- Sessions — Group related calls (chat sessions, agent runs).
- User Metrics — Per-user cost + usage segmentation.
MongoDB Atlas · 14 features
- Atlas App Services — Backend-as-a-service: Functions, HTTPS endpoints, users + auth, sync.
- Atlas Charts — Embedded dashboards + visualizations from Atlas data.
- Atlas Database — Core MongoDB with automated backups, monitoring, scaling on AWS/Azure/GCP.
- Atlas Data Federation — Query across Atlas, S3, and HTTP endpoints in one pipeline.
- Atlas Device Sync (Realm) — Offline-first mobile DB that syncs bidirectionally with Atlas.
- Atlas Search — Apache Lucene-based full-text search integrated into MongoDB aggregation pipelin…
- Atlas Stream Processing — Continuous processing of MongoDB change streams + Kafka. Pipeline aggregations o…
- Atlas Triggers — Database change triggers, scheduled triggers. Run Atlas Functions (Node.js).
- Atlas Vector Search — Vector similarity search via $vectorSearch operator. HNSW index. Up to 4096 dims…
- BYOK Encryption — Bring your own KMS key (AWS KMS, Azure Key Vault, GCP KMS).
- Data API — Read/write via REST. Alternative to drivers for edge/serverless.
- Multi-Region Clusters — Single cluster distributed across multiple regions for HA + low latency.
- Online Archive — Tiered storage: automatic cold data movement to cheaper S3-backed storage.
- Private Networking — VPC Peering, PrivateLink, CIDR allowlist.
Developer interfaces
| Kind | Helicone | MongoDB Atlas |
|---|---|---|
| CLI | Helicone CLI | Atlas CLI, MongoDB Shell (mongosh) |
| SDK | helicone (npm), helicone-python | Atlas Device SDK (Realm), MongoDB Go Driver, MongoDB Java Driver, MongoDB .NET/C# Driver, mongodb (Node driver), mongodb (Rust), pymongo |
| REST | Async Logging API, Helicone Proxy, Query API (HQL) | Atlas Admin API, Atlas Data API |
| MCP | — | MongoDB MCP Server |
| OTHER | Helicone Dashboard, Webhooks | MongoDB Compass (GUI), MongoDB Wire Protocol |
Staxly is an independent catalog of developer platforms. Outbound links to Helicone and MongoDB Atlas are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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