The Model Database Blog

Build better with every model

Tutorials, model guides, cost tips, and engineering deep-dives for shipping LLM features on one API.

Tutorials

How to Get Your First Model Database API Key

Sign up, add prepaid credit, generate an mdb_live_ key, and make your first authenticated Model Database call in under five minutes.

Priya NairJun 26, 20264 min read
Model Guides

How to Choose the Right Model for Your Task

A practical framework for choosing an LLM by capability, cost, latency, and context, plus how to switch models with one field on Model Database.

Marcus BellJun 22, 20264 min read
Cost & Scaling

10 Ways to Cut Your LLM Costs

Ten practical levers to lower your LLM bill on Model Database, from model choice and prompt trimming to caching, cost caps, and difficulty routing.

Elena FischerJun 18, 20264 min read
Use Cases

Building a Customer Support Assistant

Build a grounded customer support assistant on Model Database with retrieval, streaming replies, confidence-based escalation, and smart model routing.

Jonas MeyerJun 10, 20264 min read
Tutorials

Switch From the OpenAI API in One Line

Model Database is OpenAI-SDK compatible, so migrating is a one-line base_url swap that unlocks hundreds of models from one prepaid key.

Priya NairJun 6, 20264 min read
Model Guides

Claude Opus vs Sonnet: When to Use Which

When to use Claude Opus versus Sonnet, with an escalation pattern that keeps costs near Sonnet while reserving Opus for the hard cases.

Marcus BellJun 2, 20264 min read
Cost & Scaling

How Prompt Caching Saves You Money

Learn how prompt caching reuses your stable prompt prefix to cut input costs, and how to structure messages and verify savings with the X-MDB headers.

Elena FischerMay 29, 20264 min read
Engineering

Function Calling and Tool Use, Explained

How function calling works end to end: defining tools, the request/response loop, parallel calls, forcing tool use, and validating model-generated arguments.

Devon PrattMay 25, 20264 min read
Use Cases

A Content Generation Pipeline That Scales

Design a multi-stage content pipeline on Model Database: outline, draft, edit, and automated quality gates with per-stage model selection.

Jonas MeyerMay 21, 20264 min read
Tutorials

Your First Chat Completion in Python

Install the OpenAI SDK, point it at Model Database, and run your first Python chat completion with multi-turn history and cost tracking.

Priya NairMay 17, 20264 min read
Model Guides

Frontier vs Small Models: The Trade-offs

Frontier and small models trade capability for cost and latency; learn when each fits and how to blend them for cheap, high-quality output.

Marcus BellMay 13, 20264 min read
Cost & Scaling

Token Budgeting for Predictable Bills

Turn an unpredictable LLM bill into a forecast by budgeting tokens per request: cap output, trim history, estimate up front, and reconcile with headers.

Elena FischerMay 9, 20264 min read
Engineering

Getting Reliable JSON Out of LLMs

Layered tactics for dependable JSON from LLMs: explicit schemas, response_format, defensive parsing, error-driven retries, and tool-call extraction.

Devon PrattMay 5, 20264 min read
Use Cases

Automating Code Review With LLMs

Build an automated PR reviewer on Model Database that turns diffs into structured, line-level comments using a strong reasoning model.

Jonas MeyerMay 1, 20264 min read
Tutorials

Building a Chatbot in Node.js

Build a memory-aware terminal chatbot in Node.js using the OpenAI SDK pointed at Model Database, with per-turn cost tracking.

Priya NairApr 27, 20264 min read
Model Guides

The Best Models for Code Generation

Which models excel at code generation, how to match them to coding tasks, and how to build a tiered, streaming pipeline on Model Database.

Marcus BellApr 23, 20264 min read
Cost & Scaling

When a Cheaper Model Is the Right Call

The biggest model is not always the right one. Learn which tasks a cheaper model handles, how to prove it with an eval, and how to route by difficulty.

Elena FischerApr 19, 20264 min read
Engineering

Building Agents That Actually Work

Engineer reliable LLM agents: a minimal tool loop, hard budgets, forgiving tools, context management, and plan-then-act for harder tasks.

Devon PrattApr 15, 20264 min read
Use Cases

Extracting Structured Data From Documents

Turn invoices and forms into validated JSON on Model Database using schema-driven extraction, self-healing retries, and total checks.

Jonas MeyerApr 11, 20264 min read
Model Guides

Best Models for Summarization at Scale

How to choose summarization models for high-volume workloads, with map-reduce for long docs and cost tracking via Model Database headers.

Marcus BellApr 3, 20264 min read
Cost & Scaling

Batching and Concurrency for Throughput

Push high volume through Model Database with async concurrency, smart batching, semaphores, and safe retries, so jobs finish fast without runaway cost.

Elena FischerMar 30, 20264 min read
Engineering

How to Evaluate LLM Outputs

Measure LLM quality for real: labeled datasets, deterministic checks, careful LLM-as-judge scoring, and pass-rate tracking across models.

Devon PrattMar 26, 20264 min read
Use Cases

Natural-Language Analytics With LLMs

Build a safe natural-language analytics layer on Model Database: translate questions to read-only SQL, guard execution, and explain results.

Jonas MeyerMar 22, 20264 min read
Tutorials

Understanding Tokens, Context, and Billing

Learn what tokens and context windows are, how prepaid billing works, and how to read Model Database cost headers on every call.

Priya NairMar 18, 20264 min read
Cost & Scaling

Monitoring Usage and Spend in Real Time

Build real-time cost visibility from the X-MDB-Charged-USD and X-MDB-Balance-USD headers and the dashboard, with low-balance alerts and 402 handling.

Elena FischerMar 10, 20264 min read
Engineering

Practical Tactics to Reduce Hallucinations

Layered tactics to cut LLM hallucinations: grounding in retrieved context, an explicit I-don't-know exit, low temperature, and citation verification.

Devon PrattMar 6, 20264 min read
Use Cases

Personalizing Product Experiences With LLMs

Add real personalization on Model Database: tailored onboarding, recommendation explanations, and localized copy from structured user signals.

Jonas MeyerMar 2, 20264 min read
Tutorials

Managing and Rotating API Keys Securely

Store mdb_live_ keys in the environment, keep them off the frontend, rotate on a schedule, and revoke instantly if one ever leaks.

Priya NairFeb 26, 20264 min read
Cost & Scaling

Designing for Rate Limits and Backoff

Design an LLM client that handles rate limits gracefully with exponential backoff, jitter, proactive throttling, queues, and typed error handling.

Elena FischerFeb 18, 20264 min read
Engineering

Prompt Engineering Patterns That Scale

Prompt patterns that scale: separate system from data, few-shot examples, reason-then-answer, constrained outputs, and versioned, evaluated prompts.

Devon PrattFeb 14, 20264 min read
Use Cases

An Internal Knowledge Assistant for Your Team

Build an internal RAG knowledge assistant on Model Database that answers from your docs with citations, access control, and streaming.

Jonas MeyerFeb 10, 20264 min read
Tutorials

Handling Errors and Retries Gracefully

Handle 400, 401, and 402 errors correctly and retry only transient 429 and 5xx failures with exponential backoff and jitter.

Priya NairFeb 6, 20264 min read
Model Guides

Picking Models for Multilingual Apps

How to choose and evaluate models for multilingual apps, plus a language-aware routing pattern that picks the best model per language.

Marcus BellFeb 2, 20264 min read
Cost & Scaling

Scaling to Millions of Requests

Scale LLM traffic to millions of requests with queues, worker pools, caching, per-call cost telemetry, automatic recovery, and the per-request cost cap.

Elena FischerJan 29, 20264 min read
Engineering

Embeddings and Semantic Search Basics

Semantic search fundamentals: what embeddings are, building the chunk-embed-rank pipeline, cosine similarity, and turning matches into grounded answers.

Devon PrattJan 25, 20264 min read
Use Cases

Translation at Scale With LLMs

Localize at scale on Model Database with batched translation, placeholder and glossary enforcement, caching, and human review.

Jonas MeyerJan 21, 20264 min read
Tutorials

System Prompts 101: Steering Model Behavior

Use the system message to set role, tone, format, and guardrails, and steer any Model Database model with specific, testable instructions.

Priya NairJan 17, 20264 min read
Model Guides

Working With Long-Context Models

When long-context models help, their cost and relevance pitfalls, how they compare to retrieval, and how to keep big-prompt spend in check.

Marcus BellJan 13, 20264 min read
Cost & Scaling

Estimating Cost per Feature Before You Ship

Estimate an LLM feature's cost before shipping: model the usage drivers, do the napkin math, then validate with real X-MDB-Charged-USD probes.

Elena FischerJan 9, 20264 min read
Engineering

Adding Guardrails to Your LLM Features

Add layered guardrails to LLM features: input validation, injection defense, system-prompt constraints, output validation, and classifier-based checks.

Devon PrattJan 5, 20264 min read
Use Cases

Summarizing Meetings and Transcripts

Summarize long meetings on Model Database with map-reduce chunking and structured output for decisions, action items, and owners.

Jonas MeyerJan 1, 20264 min read
Tutorials

Build a Terminal Chat Tool in 50 Lines

Build a streaming, multi-model, memory-aware terminal chat tool in about 50 lines of Python using Model Database.

Priya NairDec 28, 20254 min read
Model Guides

Model Routing Strategies for Production

Production model routing strategies: rule-based, cascade with escalation, and classifier-based, plus fallbacks and cost tracking via response headers.

Marcus BellDec 24, 20254 min read
Cost & Scaling

Adding a Caching Layer to Your LLM App

Build an application caching layer for your LLM app with exact-match and semantic caching, sensible TTLs, and header-based measurement of avoided charges.

Elena FischerDec 20, 20254 min read
Engineering

Testing and CI for LLM-Powered Features

A practical testing and CI strategy for LLM features: mock the deterministic code, evaluate prompts on a fixed dataset, and gate CI on pass rate.

Devon PrattDec 16, 20254 min read
Use Cases

Upgrading Site Search With LLMs

Upgrade site search on Model Database with query rewriting, hybrid keyword-plus-vector retrieval, and a cited, streamed answer layer.

Jonas MeyerDec 12, 20254 min read

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