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Compare free LLM APIs, image generation APIs, voice APIs, and coding models by provider, quota, signup requirement, examples, and availability signals.

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Fish Audio Explained: Free S2.1 Pro TTS and Voice Cloning

A practical introduction to Fish Audio: 83-language S2.1 Pro speech, natural-language emotion control, reusable voice cloning, and the difference between its two free offers.

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Anthropic

Code Generation

Claude 3.5 Sonnet

Free Claude 3.5 Sonnet API access via Vercel AI Gateway credits. Compare Anthropic-quality coding, 200K context, no-credit-card signup, and examples.

text-generation, code-generation

DeepSeek

Text Generation

DeepSeek R1

Free DeepSeek R1 API access via GitHub Models, Vercel AI Gateway, and Cloudflare's distilled R1 option. Compare reasoning quotas and examples.

text-generation

OpenAI

Text Generation

GPT-4o-mini

Free GPT-4o mini API access through GitHub Models and Vercel AI Gateway. Compare no-credit-card quotas, 128K context, vision support, and copy-paste examples.

text-generation

Llama 4 Scout

Meta's efficient Llama 4 model designed for high-speed reasoning.

text-generation

DeepSeek

Code Generation

DeepSeek V4 Pro

Free DeepSeek V4 Pro API reference for coding and reasoning. Compare Cloudflare and Vercel-style access paths, quota signals, and examples.

text-generation, code-generation

xAI

Text Generation

Grok 4.3

xAI flagship text model — 1M-token context, real-time X data, strong agentic tool calling. Free on Vercel ($5/mo); paid-but-keyless on Cloudflare (Unified Billing).

text-generation, image-understanding

Anthropic

Code Generation