Anthropic has no free API path in our catalog. Verified 2026-09-16. Our row: Anthropic API.
Free API paths in our catalog from other providers:
Gemini API free tier (AI Studio) (Google): Ongoing free tier (not a trial). Free of charge on Gemini 3.8 / 3.7 / 3.6 / 3.5 Flash, 3.5 Flash-Lite, 3.1 Flash-Lite, 3 Flash Preview, 3.1 Flash TTS Preview, the 3.5 audio models (Transcribe, Transcribe Live, Live Translate), AND Gemini 2.5 Pro and 2.5 Flash — plus Gemma 4 and Gemini Embedding 2 (text, image, audio and video input all free of charge). Exact per-project rate limits are shown in AI Studio. Verified 2026-09-16. Full caveats.
OpenRouter :free model variants (OpenRouter): Rotating set of :free model variants — 16 of 467 models carried a :free suffix at $0 prompt and completion when read from openrouter.ai/api/v1/models on 2026-10-08: NVIDIA Nemotron 3 (nano-omni-30b reasoning, super-120b, ultra-550b, 3.5-content-safety, 3.5-lightning), Thinking Machines Inkling and Inkling Small, Poolside Laguna S/XS 2.1, InclusionAI Ling 3.0 Flash Sante, Google Gemma 4 (26b-a4b-it, 31b-it), Cohere North Mini Code, Liquid LFM 2.5 2.6b, dots-studio Dots 3 Note Preview, Apodex 1.1 Mini. Limits: 20 req/min; 50 req/day if lifetime purchases < $10, 1,000 req/day after a one-time $10 credit purchase. Verified 2026-10-08. Full caveats.
La Plateforme Free mode (Mistral): Free mode is the default state for new accounts. Mistral's pricing page lists the Free plan with “$10 /mo in API credits”, and its docs say Free mode “lets you create API keys and use included monthly usage within the limits shown on the Limits page”; that included usage is “shared across Studio, the API, and Vibe Code”. Rate limits are not published on a public page; they are shown only in the Admin Console. Verified 2026-10-06. Full caveats.
NIM / build.nvidia.com developer credits (NVIDIA): Free credits for NVIDIA-hosted NIM endpoints on build.nvidia.com (“anyone can sign up to the NVIDIA API Catalog for free credits”; free Developer Program membership gives “free access to NIM API endpoints for prototyping”), OpenAI-compatible API. NVIDIA publishes no credit count or rate limit on the pages read; the commonly repeated 1,000 credits and ~40 req/min are third-party. Verified 2026-10-06. Full caveats.
Not affiliated with Anthropic or any provider named here; names are their owners' marks.