Updated March 2026

Free AI Resources

Curated collection of free LLM APIs, tools, and resources for developers and builders. Zero cost. Maximum leverage.

🔑 Free LLM API Providers

NVIDIA NIM

build.nvidia.com

FREE

Free access to top models: GLM-5, Kimi K2.5, Qwen3 Coder, DeepSeek V3.2. Best reasoning model (GLM-5) is free.

GLM-5 Kimi K2.5 Qwen3 DeepSeek
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EchoBird Free Models

echobird.ai/free-models

DAILY UPDATE

Daily updated list of free-tier LLM APIs. OpenAI-compatible protocol. Configure directly for OpenClaw and other tools.

Daily Updates OpenAI Compatible Curated
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OpenRouter Free Models

openrouter.ai

AGGREGATOR

Aggregates free models from multiple providers. 61% of token consumption is Chinese models (MiniMax, Kimi, GLM-5).

Multi-provider Free Tier API Access
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🛠️ Free AI Stack (Self-Hosted)

Build a complete zero-cost AI stack. All tools are open-source and privacy-first.

💬

Local LLM

Ollama + Open WebUI

Run models locally with a clean team chat interface. Privacy-first.

🎨

Images

ComfyUI + Stable Diffusion

Node-based image generation pipelines. GPU recommended.

🎤

Speech-to-Text

Whisper (OpenAI)

Offline transcription, multilingual. Run locally for privacy.

🔊

Text-to-Speech

Piper

Lightweight local TTS. Fast inference, offline voices.

📚

RAG

LlamaIndex + Chroma

Private knowledge assistants with citations. Vector database included.

Automation

n8n

Zapier alternative. Self-hosted workflow automation.

📊

Observability

Langfuse

LLM tracing, metrics, prompt analytics. Self-hostable.

RAG Evaluation

Ragas

Quality metrics for RAG. Measure groundedness and accuracy.

🤖

Chatbot Framework

Rasa Open Source

Policy-controlled assistants. Strong governance for production.

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📊 Model Comparison: NVIDIA Free Tier

Model Best For Reasoning Coding Notes
GLM-5 ⭐ Reasoning & Agents 79.4% 76% Best free reasoning. Best tool reliability.
Kimi K2.5 Multimodal - - 1T params, 262K context. Tool calling issues.
Qwen3 Coder 480B Coding - High 119 languages. Lost to GLM-5 in testing.
DeepSeek V3.2 Coding 75.3% Better Strong coding, weaker reasoning than GLM-5.

* Benchmark data from benchlm.ai - March 2026

💰 Cost Comparison: Free vs Paid

Model Input/1M Output/1M Monthly (Heavy)
GLM-5 (NVIDIA) $0 $0 $0
GPT-5.4 $2.50 $15 $30-50
Claude Opus 4.6 $15 $75 $100-150
GPT-4.1 mini $0.40 $1.60 $2-5
Gemini 2.5 Flash $0.075 $0.30 $0.30-0.50

📚 More Resources