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Insights, product notes, and implementation guides for teams building on AI APIs.
AI Gateway Architecture
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Latest articles in Base URL and SDK Migration.
Read moreCost, Billing, and Ops
Latest articles in Cost, Billing, and Ops.
Read moreEnterprise Controls and Trust
Latest articles in Enterprise Controls and Trust.
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Latest articles in Gateway Comparisons.
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Latest articles in Model and Modality Playbooks.
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Latest articles in Tool Integrations.
Read moreコスト・請求・運用
AI APIのコスト最適化、請求管理、運用に関する日本語記事
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CrewAI OpenAI-Compatible Router: One Key for Multi-Agent Workflows
Configure CrewAI with an OpenAI-compatible router through Flatkey, then verify base_url, model routes, tools, logs, costs, and rollback.

LangGraph Multi-Model Routing: Gateway Checks for Agent Workflows
Route LangGraph agent nodes across models through Flatkey, with gateway checks for budgets, tools, retries, logs, and rollback.

OpenCode OpenAI compatible provider setup: Route coding-agent models through Flatkey
Configure OpenCode with a custom OpenAI-compatible provider through Flatkey, then verify the base URL, model selection, logs, and rollback path.

Windsurf OpenAI compatible API setup: Route coding-agent traffic through one key
Route OpenAI-compatible app and SDK calls from Windsurf-driven projects through Flatkey without assuming a native Windsurf provider screen.

Cursor OpenAI Compatible API Setup: Base URL, Model Names, and Usage Logs
Set up a Cursor OpenAI compatible API path carefully: verify base URL support, model names, usage logs, BYOK policy, and rollback before routing traffic.

Multi-Model SDK Migration: Keep OpenAI Clients for Claude, Gemini, and DeepSeek
Plan a multi-model SDK migration that keeps OpenAI clients while testing Claude, Gemini, DeepSeek, tools, streaming, billing, and rollback.

7 Migration Tests Before Changing an AI API Base URL
A seven-step checklist for testing auth, model routing, chat completions, SDK parity, streaming, tool calling, usage, quota, and rollback before changing an AI API base URL.

OpenAI-Compatible Model Names: Avoid Alias, Provider, and Version Mistakes
A practical checklist for verifying OpenAI-compatible model names, provider model IDs, Flatkey aliases, endpoint families, and version policies before migration.

OpenAI-Compatible API Troubleshooting: Fix 401s, Model Names, Streaming, and Base URLs
A practical debug path for OpenAI-compatible API 401s, model-name errors, streaming/SSE failures, base URL mistakes, and billing readback.

One API Key for Multiple AI Models: Migration Checks Before You Switch
Verify base URL, SDK config, model aliases, usage logs, quotas, billing proof, and rollback before switching to one key for multiple AI models.

AI Gateway SLA Questions for Model Routing, Fallback, and Support
Use these AI gateway SLA questions to turn uptime, fallback, support, and third-party dependency claims into buyer-owned evidence before renewal.

Seedance vs Veo API: Video Generation Routing and Pricing Review
Compare Seedance vs Veo API routing and pricing units with official video model rows, Flatkey route checks, and a production readiness workflow.

GPT Image vs Imagen API: Pricing Units and Request Checks
Use this GPT Image vs Imagen API checklist to compare pricing units, request parameters, deprecation risk, and Flatkey gateway status checks.

DeepSeek vs Qwen API: OpenAI-Compatible Routing Checks
Use this DeepSeek vs Qwen API checklist to compare direct provider routes, pricing units, OpenAI-compatible behavior, and Flatkey gateway checks.

Gemini vs Claude API Routing: Cost, Context, Tools, and Reliability Checks
Compare Gemini vs Claude API routing by cost units, context limits, tool behavior, reliability checks, and when to use a gateway for one key and shared billing.

Claude vs GPT API Routing: When to Prefer Provider-Specific Models or a Gateway
Decide when to route Claude or GPT calls directly through provider APIs and when to use a gateway for one key, billing visibility, route checks, and fallback.

AI Gateway Procurement Evidence Packet: What to Save Before Approval
Build a buyer-owned AI gateway procurement evidence packet with vendor identity, data handling, access controls, logs, billing proof, smoke tests, and sign-off triggers.

AI API Access Review: Key Owners, Rotation, Scopes, and Offboarding
Run an AI API access review for gateway keys with owners, scope checks, rotation steps, offboarding triggers, audit evidence, and Flatkey gateway review points.
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