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API Guides

Gemini 3.8 Flash API Guide: Model ID, Client Setup and Access Checks

Use the exact Gemini 3.8 Flash model ID, choose the right LLMAPI client base URL, and check subscription access separately from API billing and protocol support.

2026-10-28 5

LLM API Editorial Team

API Guides

GPT-6.1 Terra: Model ID, Responses API and Migration Checks

Use the correct GPT-6.1 Terra model ID, start with the Responses API, review vision and tool migration checks, and distinguish official support from LLMAPI access.

2026-10-27 5

LLM API Editorial Team

API Guides

GPT-6.1 Sol: Model ID, Responses API Quick Start, and Migration Checks

Use the official gpt-6.1-sol model ID in a Responses API request, check reasoning and tool compatibility, and verify billing-mode access before switching.

2026-10-23 4

LLM API Editorial Team

API Guides

Claude Fable 5.1 Migration Guide: Model ID, Thinking and Client Setup

Choose the exact Fable 5.1 model ID, configure Claude Code for LLMAPI, review always-on thinking, and check your account's model access before migrating.

2026-10-15 4

LLM API Editorial Team

API Guides

Claude Haiku 5.5 API Guide: Model ID, Setup and Billing Checks

Connect Claude Haiku 5.5 with the exact model ID, choose the correct client URL, and check subscription versus API billing before your first request.

2026-10-08 4

LLM API Editorial Team

API Guides

GPT-6 and GPT-6.1: Model IDs and Responses API Setup

Choose the documented GPT-6 or GPT-6.1 model ID, make a Responses API text request, and separate OpenAI specifications from LLMAPI subscription access.

2026-09-26 5

LLM API Editorial Team