flatkey.ai Blog
Insights, product notes, and implementation guides for teams building on AI APIs.
AI Gateway Architecture
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Latest articles in Cost, Billing, and Ops.
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Latest articles in Model and Modality Playbooks.
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LLM API Observability: Metrics, Traces, Logs, and Cost
A production guide to monitoring LLM APIs with validated success metrics, distributed traces, safe structured logs, SLOs, alerts, and cost per accepted task.
Secure API Key Management for AI Products
A production playbook for AI API key custody, scoped identities, prompt-safe logging, zero-downtime rotation, leak response, and multi-provider governance.
AI Model Evaluation Before Switching API Providers: A Workflow Checklist
Use a decision-grade AI model evaluation workflow to compare providers on task success, compatibility, reliability, latency, effective cost, and rollout risk.
LLM Rate Limits Explained: RPM, TPM, and Retries
Understand RPM, TPM, 429 errors, capacity planning, queues, exponential backoff, retry budgets, and fallback routing for production LLM APIs.
LLM API Fallback Routing: A Production Failover Playbook
A production playbook for deciding when LLM requests should retry, fail over, switch models, or stop—without breaking streams, tools, schemas, or latency budgets.
AI API Pricing Comparison: OpenAI vs Claude vs Gemini vs Qwen (2026)
Compare current OpenAI, Claude, Gemini, and Qwen API prices using normalized production workloads and cost per accepted result.
AI API Gateway Architecture: One Key, Model Routing, and Failover
A production architecture guide to one-key model access, explicit routing policy, health checks, retries, contract-safe failover, streaming, telemetry, and migration.
Seedance API Evaluation Framework for Text-to-Video Product Teams
A repeatable framework for evaluating Seedance API quality, reliability, user experience, safety, and cost before a text-to-video product rollout.
DeepSeek API vs Qwen API for Cost-Sensitive Workflows: 2026 Cost Guide
Compare DeepSeek and Qwen API pricing with July 28, 2026 list prices, cache break-even math, batch costs, lifecycle risks, and workload-specific guidance.
Gemini API Production Readiness Checklist for Backend Teams
A production-readiness checklist for backend teams integrating Gemini API, covering credentials, response contracts, retries, observability, cost, rollout, and incidents.
Claude API Access Outside One-Region Setups: A Compliance-First Guide
A compliance-first guide to Claude API access across regions, covering direct Anthropic, Bedrock, Vertex AI, gateways, testing, observability, and approved failover.
OpenAI API Access for Multi-Model Products: A Production Setup Guide
Set up OpenAI API access for a production multi-model product with project-scoped credentials, endpoint checks, rate-limit handling, canaries, and fallback readiness.
Flatkey Integration Starter: From One Key to Multi-Model Testing
Connect Flatkey to the quickest useful workflow: make a first API call, add Cherry Studio or CC Switch, compare models, and plan the team handoff.
AI API Spend Management for Operations and Finance Teams
A role-based guide for connecting AI API usage, billing, quotas, balances, recharge records, and key governance in one operating model.
AI image generation API for ecommerce creative pipelines: a buyer guide
A manager-facing guide to evaluating AI image generation APIs and gateways for ecommerce creative pipelines using weighted criteria, decision gates, and a 30-day pilot.
Seedance 2.0 API in 2026: Access, Pricing, and Fallback Routing
A current guide to Seedance 2.0 API access, pricing verification, asynchronous jobs, and safe fallback routing across changing video-model versions.
DeepSeek API Pricing (2026): Compare OpenAI, Claude, Gemini, and Qwen
Compare DeepSeek API pricing with OpenAI, Claude, Gemini, and Qwen using dated token rates, reproducible workload math, cache caveats, and a scheduled refresh workflow.
Gemini API Pricing in 2026: Current Model Costs and Workload Calculator
Compare current Gemini API pricing with reproducible workload-cost tables for Gemini 3.6 Flash, 3.5 Flash-Lite, Gemini 2.5 models, Batch jobs, caching, and long-context workloads.
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