Free LLM & AI APIs in 2026 — Compared
Eight providers with genuine free tiers. No "free trial that bills your card on day 30" entries.
For raw budget, Cloudflare Workers AI gives you ~10,000 small-model requests per day on its free plan.
For inference speed, Groq runs Llama 3.3 70B in under 500 ms.
For model variety, OpenRouter exposes dozens of :free model variants behind a single API key.
For multimodal prototypes, Google Gemini Flash on AI Studio is 1M tokens/day free.
The free LLM API landscape changes faster than any other category we cover. Providers tighten free tiers monthly, add features, deprecate models, and rename their plans. The eight providers below are the ones whose free tier is currently both usable (more than a token sample) and sustainable (not a "first 30 days" trial that flips to paid). Last verified against each provider's documentation in June 2026.
The providers
1. Cloudflare Workers AI
Free tier: 10,000 neurons/day on the free plan (~10k small-model requests)
Models: Llama 3.3, Mistral, Phi-3, plus image, audio, embedding endpoints
Signup: Email
Best for: Edge-deployed apps, low-latency chat, RAG with embeddings
Best free tier we have measured. Runs at Cloudflare's edge so latency from a Worker is single-digit milliseconds. Trade-off: the catalog of models is narrower than OpenRouter, and the largest Llama 3.3 70B variant counts as more neurons per request.
2. Google Gemini API (AI Studio)
Free tier: Gemini 2.5 Flash: 15 req/min, 1M tokens/day. Gemini 2.5 Pro: 5 req/min, 25 req/day
Models: Gemini 2.5 Flash, Gemini 2.5 Pro, Gemini Embedding, Gemini Image (limited)
Signup: Email + OAuth
Best for: Multimodal prototypes, long-context summarization, agentic loops
Genuinely useful free tier — Flash is good enough for most prototype work and the 1M tokens/day budget is generous. Caveat: free-tier requests are used to train future models per the AI Studio terms. Production apps should move to the paid Vertex AI tier.
3. Groq
Free tier: 30 req/min, ~14,400 req/day on free plan. Per-model token budgets vary
Models: Llama 3.3 70B, Llama 3.1 8B, Mixtral 8x7B, Gemma 2
Signup: Email
Best for: Real-time chat, streaming responses, low-latency demos
Fastest inference we have benchmarked — Llama 3.3 70B responds in under 500ms for short prompts. The free tier is strict on tokens-per-minute but the request count is high. Excellent for streaming chat where time-to-first-token matters more than raw throughput.
4. OpenRouter
Free tier: Several model variants marked :free — no per-request cost, shared rate limit pool
Models: Llama, Mistral, DeepSeek, Qwen, Gemma — dozens of free-marked variants
Signup: Email
Best for: Comparing models cheaply, fallback chains, model exploration
Aggregator that routes to many backends including HuggingFace, Together, Hyperbolic. The :free models share a global rate limit pool (currently 20 req/min) but the model catalog is the widest free option. Quality varies — some :free endpoints are quantized or rate-limited harder than the providers' own free tiers.
5. Hugging Face Inference API
Free tier: Limited monthly credits, free for cold-start models. Pro account ($9/mo) lifts the cap significantly
Models: Tens of thousands of open-source models via Inference Providers (Together, Fireworks, Cerebras, etc.)
Signup: Email
Best for: Research, embeddings, non-mainstream models, classification pipelines
The free tier has tightened in 2026 — Hugging Face moved most popular models to paid 'Inference Providers' partnership pricing. Still useful for niche or research models that have no commercial provider.
6. Mistral La Plateforme (Free tier)
Free tier: Free Experimental tier: rate-limited access to all models, no per-token cost for evaluation
Models: Mistral Small, Mistral Large, Codestral, Pixtral
Signup: Email + phone
Best for: EU data residency, code completion, multilingual European use cases
Phone verification required. The Free Experimental tier explicitly allows production use up to the rate limit, which is unusual. Excellent quality for European data residency — Mistral is hosted in France.
7. DeepSeek API
Free tier: No persistent free tier. Promotional credits at signup ($5-$10) that last weeks at typical usage
Models: DeepSeek-V3, DeepSeek-R1 (reasoning), DeepSeek Coder
Signup: Email
Best for: Reasoning-heavy tasks, code generation, cost-sensitive production
Strictly speaking not 'free' — the promotional credit runs out — but DeepSeek's paid pricing is so cheap (~$0.27/1M input tokens) that even after the credit, hobbyist use is sub-dollar per month. Worth listing because the credit covers full evaluation of R1 reasoning quality.
8. Cohere Trial Key
Free tier: Trial key: rate-limited but no expiration. Production key requires paid plan
Models: Command R, Command R+, Embed v3, Rerank v3
Signup: Email
Best for: Embeddings prototyping, RAG quality testing, rerank evaluation
The trial key is genuinely indefinite — Cohere does not deprecate it after N days. Rate limits are aggressive (5 req/min on chat) so unsuitable for any traffic, but excellent for embeddings + rerank prototyping.
How we picked these
The bar for inclusion is deliberately strict — there are dozens of "free LLM API" lists online that confuse free trials with free tiers, list providers whose free plan was deprecated two years ago, or include endpoints behind credit-card-required signup. To make this list, a provider must:
- Offer access without a paid credit card at signup (phone verification is allowed; we flag it)
- Maintain the free tier as an indefinite policy, not a 30/60/90-day trial
- Serve current-generation models — not deprecated 2023 endpoints
- Publish rate limits and terms machine-readably or in plain English
Which one should you actually use?
Three patterns we have seen work across the prototypes that use this stack:
Pattern 1 — Edge chat on a budget
Cloudflare Workers AI + Groq fallback. Workers AI runs at the edge so latency from a Worker is single-digit ms; when the daily neuron budget is depleted you fall back to Groq's free tier which has a separate quota. Total daily capacity: ~25,000 short-prompt requests at no cost. Suitable for a hobbyist chatbot or a developer-tool demo.
Pattern 2 — RAG with citation quality
Cohere Embed v3 (trial) + Google Gemini Flash + OpenRouter rerank. Cohere's embedding quality is among the best free-tier options. Gemini Flash handles the generation step within its 1M tokens/day budget. OpenRouter exposes Cohere Rerank v3 as a :free variant for the final ranking pass. Daily capacity: ~500 RAG queries with 10-doc context per query.
Pattern 3 — Reasoning evaluation
DeepSeek-R1 (promo credit) + Mistral Large (free experimental) + Gemini 2.5 Pro (25/day). When you need to compare reasoning depth across providers cheaply, this trio covers the spectrum: DeepSeek-R1 for transparent chain-of-thought, Mistral Large for European-data-residency reasoning, Gemini Pro for the 25-request daily ceiling on the strongest free Google model. Not for production — for evaluation.
Frequently Asked Questions
Which free LLM API has the best free tier in 2026?
Cloudflare Workers AI has the highest measurable free budget for general-purpose chat use (10,000 neurons/day, which translates to ~10,000 requests on small models). Google Gemini's 1M tokens/day on Flash is generous for long-context work. Groq has the fastest inference speed of any free-tier provider. The 'best' depends on what you optimise for: budget, latency, or model quality.
Are these free LLM APIs allowed for commercial use?
Most are not. Cloudflare Workers AI's free plan allows commercial use up to the neuron budget. Mistral's Free Experimental tier explicitly allows production use within rate limits. Google Gemini's free tier prohibits using free output for commercial products without moving to paid Vertex AI. Cohere trial keys are non-commercial. Always check the latest terms before shipping anything paid.
Which free LLM API requires no credit card?
Cloudflare Workers AI, Google Gemini (via AI Studio), Groq, OpenRouter, Hugging Face, and Cohere all accept email-only signup. Mistral requires phone verification. DeepSeek and most paid providers ask for a card at first top-up but not at initial signup.
What's the difference between OpenRouter and using providers directly?
OpenRouter is an aggregator — one API key, one endpoint, dozens of models. The trade-off is OpenRouter adds latency (~50-150ms) and the :free models share a global rate limit pool that depletes faster than going direct. For prototyping and model comparison, OpenRouter is faster to wire up. For production on a single model, going direct (Groq, Cloudflare, Gemini) is usually faster and cheaper.
How do these compare to the paid Claude, GPT-4, and Gemini APIs?
The frontier paid models (Claude Opus 4.7, GPT-5, Gemini 2.5 Pro paid tier) still beat anything on this page for reasoning depth, instruction following, and tool use. But the gap is narrower than it was in 2024 — Llama 3.3 70B on Groq, Mistral Large, and DeepSeek-R1 are all genuinely production-quality for most chat, summarization, and RAG workloads. For agentic loops or critical reasoning, pay. For everything else, the free tier is fine.
Does FreeAPI.watch monitor these LLM APIs?
Not yet. The LLM APIs on this page are curated editorial picks, not live-monitored like our 81 tracked weather, finance, and data APIs. LLM endpoints have authentication and per-token cost that complicate automated pinging. If demand is there we will add a separate monitoring pipeline — let us know on the contact page.
Related on FreeAPI.watch
- Free APIs with no API key — non-LLM endpoints that need zero authentication
- Free APIs with no credit card — broader free-tier filter across all categories
- API glossary — terminology guide for working with public APIs
- How we measure free-tier quality — the composite score behind our rankings
Last reviewed: June 2026. Free-tier terms move fast — verify against each provider's docs before deploying.