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OpenAI API format becomes de facto standard for LLM integration

The OpenAI API format has become a de facto standard for interacting with large language models, with many providers now offering compatibility. This means developers can use the same code, SDK, and integration patterns to access models from various companies like DeepSeek, Anthropic (Claude), Google (Gemini), and others. Tools like TokenPapa aim to simplify this by allowing users to switch between over 30 different LLMs with minimal code changes, consolidating API keys and billing into a single interface. AI

IMPACT Simplifies LLM integration for developers by abstracting away provider-specific differences.

RANK_REASON Article describes a tool that leverages an existing standard (OpenAI API) to connect to multiple LLMs.

Read on dev.to — LLM tag →

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OpenAI API format becomes de facto standard for LLM integration

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  1. dev.to — LLM tag TIER_1 English(EN) · TokenPAPA ·

    OpenAI-Compatibility Explained: How One API Connects to 30+ LLMs (DeepSeek, GPT, Claude, Gemini & More)

    <h1> OpenAI-Compatibility Explained: How One API Connects to 30+ LLMs </h1> <p>If you've built anything with LLMs in 2026, you've used the OpenAI API format. It's become the de facto standard — <code>/v1/chat/completions</code>, <code>messages</code> array, <code>model</code> str…