OpenAI API vs PocketBase
Frontier models: GPT-5, o-series reasoning, image, audio, embeddings
vs. Open-source backend in a single Go binary
Pricing tiers
OpenAI API
Free Tier (Trial)
$5 free credit for new accounts. Rate-limited.
Free
Pay-as-you-go
No monthly min. Per-token pricing by model.
$0 base (usage-based)
Usage Tiers (1-5)
Automatic tier promotion based on cumulative spend. Higher tiers = higher rate limits + new model access.
$0 base (usage-based)
Enterprise
Custom. Priority access, SLA, dedicated capacity.
Custom
PocketBase
Self-Hosted
MIT-licensed single binary. Run on any VPS / Docker / bare metal. No usage caps — only limited by your server.
$0 base (usage-based)
Free-tier quotas head-to-head
Comparing free-tier on OpenAI API vs self-hosted on PocketBase.
| Metric | OpenAI API | PocketBase |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
OpenAI API · 12 features
- Assistants API — Stateful assistants with tools, threads, file search.
- Batch API — 50% discount for async processing within 24h.
- Chat Completions API — Classic /v1/chat/completions endpoint.
- Files API — Upload docs for retrieval, fine-tuning, batch.
- Fine-Tuning — Supervised + DPO fine-tuning for GPT-4o, GPT-4.1, GPT-4o-mini.
- Function Calling — JSON-schema tool calling; parallel calls supported.
- Moderation — Safety classifier API (free).
- Prompt Caching — Auto-cache repeated prefixes; 50% cheaper cached hits.
- Realtime API — WebSocket streaming voice + text with low latency.
- Responses API — Stateful conversational API.
- Structured Outputs — Enforced JSON schema compliance.
- Vision — Image input for GPT models.
PocketBase · 12 features
- Access Rules — Record-level access rules (filter expressions) referencing @request and @collect…
- Admin Dashboard — Built-in web UI for schema + data management.
- Auth — Email+password, OAuth2 (Google, GitHub, Facebook, Apple, Discord, Microsoft, etc…
- Backups — Built-in backup/restore with S3 upload option.
- Built-in Mailer — SMTP integration for verification, password reset, magic link emails.
- Collections — Schema-defined record types with fields, validations, and record/admin/auth acce…
- Embedded JS Engine — JavaScript VM (goja) lets you write hooks in JS without recompiling.
- Extend as Go Library — Embed PocketBase in a larger Go app, add custom routes and events.
- File Storage — Local filesystem or S3-compatible storage with access rules.
- Hooks — Server-side Go or JavaScript hooks that run on CRUD events (OnRecordBeforeCreate…
- Migrations — JS/Go migration scripts applied on startup.
- Realtime Subscriptions — SSE-based subscriptions to collection changes.
Developer interfaces
| Kind | OpenAI API | PocketBase |
|---|---|---|
| SDK | openai-dotnet, openai-go, openai-node, openai-python | Go API (extend as library), pocketbase (Dart), pocketbase (JS SDK) |
| REST | OpenAI REST API | REST API |
| MCP | OpenAI MCP | — |
| OTHER | Realtime API (WebSocket) | Admin Dashboard, Realtime SSE |
Staxly is an independent catalog of developer platforms. Outbound links to OpenAI API and PocketBase are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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