Neon vs AssemblyAI
Serverless Postgres with branching and bottomless storage
vs. Best-in-class speech-to-text API — Universal models, 99 languages, low-latency streaming
Pricing tiers
Neon
Free
100 projects, 0.5 GB storage + 100 CU-hours each. Great for prototypes and preview envs.
Free
Launch
Usage-based, no minimum. Small production workloads. $0.35/GB-month storage, $0.106/CU-hour.
$0 base (usage-based)
Scale
Usage-based, higher compute tier + faster instances ($0.222/CU-hour). Up to 30-day PITR, 1,000 projects.
$0 base (usage-based)
Business
Usage-based with 99.95% SLA, HIPAA available. Private networking $0.01/GB.
$0 base (usage-based)
AssemblyAI
Free Credits
$50 in free credits on signup. Full API access.
Free
Pay-as-you-go
Per-hour billing by model. No minimum.
$0 base (usage-based)
Enterprise
Custom contracts. SLA, private deployments, BAA.
Custom
Free-tier quotas head-to-head
Comparing free on Neon vs free-trial on AssemblyAI.
| Metric | Neon | AssemblyAI |
|---|---|---|
| branches per project | 10 branches | — |
| cu hours per project | 100 CU-hours/month | — |
| egress gb month | 5 GB/month | — |
| pitr retention hours | 6 hours | — |
| projects | 100 projects | — |
| storage gb per project | 0.5 GB | — |
| team members | 3 users | — |
Features
Neon · 14 features
- Autoscaling — Compute scales CPU + memory between min and max CU in seconds based on load.
- Branching — Git-like DB branches: copy-on-write snapshots of data + schema. Instant, cheap. …
- Data API (REST) — PostgREST-compatible REST endpoint auto-generated from your schema. Uses Postgre…
- IP Allowlist — Restrict DB access to specific CIDRs. Launch+.
- Launchpad — One-click create-a-database link that can be embedded in OSS repos (DATABASE_URL…
- Logical Replication — Publish changes to Snowflake, BigQuery, Kafka, or other Postgres. Subscribe from…
- Monitoring — Built-in dashboards for CPU/RAM/connections/slow queries. Prometheus export on B…
- Neon Auth — Stack Auth integrated: users table auto-synced into your Postgres (public.users_…
- Point-in-Time Restore — Restore DB to any moment in the retention window (6h free → 30d Scale) via branc…
- Private Networking — AWS PrivateLink / VPC peering. Business plan.
- Read Replicas — Create a read-only compute endpoint on the same branch. Zero replication lag (re…
- Scale to Zero — Compute suspends when idle — no charge for compute while paused. Cold-start ~300…
- Schema Diff — Compare schema between branches — build PR checks and preview migrations safely.
- SQL over HTTP — Serverless driver lets you query Postgres over HTTPS — works in edge runtimes (V…
AssemblyAI · 11 features
- Advanced Prompting — Streaming with disfluency + code-switching + realtime diarization.
- Audio Intelligence — Sentiment, topic detection, summarization, entity detection, content safety, IAB…
- Auto Punctuation — Smart capitalization + punctuation.
- Keyterm Prompting — Boost accuracy for domain vocabulary.
- LeMUR (LLM framework) — Run LLMs over transcripts: Q&A, summary, action items.
- Medical Mode — Specialized for clinical + medical vocabulary.
- PII Redaction — Auto-redact credit cards, SSNs, addresses, emails.
- Pre-recorded Transcription — Upload audio/video URL or file → transcript.
- Realtime Streaming — WebSocket-based low-latency STT.
- Speaker Diarization — Identify who spoke when.
- Webhooks — Auto-notify when transcription finishes.
Developer interfaces
| Kind | Neon | AssemblyAI |
|---|---|---|
| CLI | Neon CLI | — |
| SDK | @neondatabase/serverless | assemblyai-go, assemblyai (Node), assemblyai (Python), assemblyai (Ruby) |
| REST | Management / Control Plane API, Neon Data API (REST), SQL over HTTP | AssemblyAI REST API |
| MCP | Neon MCP Server | — |
| OTHER | Postgres Wire Protocol | Streaming WebSocket, Webhooks |
Staxly is an independent catalog of developer platforms. Outbound links to Neon and AssemblyAI are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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