Lightning AI
LLM 8.7/10Reported free tier giving one OpenAI-compatible key to many frontier models, no card required.
Lightning AI scores 8.7/10 for free value in LLM. The main constraint: Reported ~30M tokens/month free across many frontier models via one key (no credit card, no waitlist) - verify current limits.
Free value score
8.7 / 10Show the math
Key metrics
Models
40 free · 40 total| Model | Family | AA | Access |
|---|---|---|---|
| google/gemini-3.5-flash | Gemini | 50.2 | free |
| google/gemini-3.1-pro-preview | Gemini | 46.5 | free |
| lightning-ai/deepseek-v4-pro | DeepSeek | 44.3 | free |
| openai/gpt-5.4-mini-2026-03-17 | GPT | 40 | free |
| openai/gpt-5.4-nano-2026-03-17 | GPT | 38.2 | free |
| lightning-ai/nvidia-nemotron-3-ultra-550b-a55b | Nemotron | 37.8 | free |
| openai/o3 | GPT | 30.4 | free |
| google/gemini-3-flash-preview | Gemini | 27.4 | free |
| google/gemini-2.5-pro | Gemini | 27 | free |
| google/gemini-3.1-flash-lite-preview | Gemini | 25 | free |
| lightning-ai/gpt-oss-120b | GPT-OSS | 23.8 | free |
| openai/gpt-4.1 | GPT | 19.4 | free |
| openai/o3-mini | GPT | 19 | free |
| lightning-ai/gpt-oss-20b | GPT-OSS | 14.9 | free |
| lightning-ai/nemotron-3-nano-omni-30b-a3b-reasoning | Nemotron | 14.9 | free |
| google/gemini-2.5-flash | Gemini | 14.1 | free |
| google/gemini-2.5-flash-lite-preview-06-17 | Gemini | 14.1 | free |
| openai/gpt-4o | GPT | 11.2 | free |
| openai/gpt-4-turbo | GPT | 7.9 | free |
| anthropic/claude-haiku-4-5-20251001 | Claude | — | free |
| anthropic/claude-opus-4-1-20250805 | Claude | — | free |
| anthropic/claude-opus-4-20250514 | Claude | — | free |
| anthropic/claude-opus-4-5-20251101 | Claude | — | free |
| anthropic/claude-opus-4-6 | Claude | — | free |
| anthropic/claude-opus-4-7 | Claude | — | free |
| anthropic/claude-opus-4-8 | Claude | — | free |
| anthropic/claude-sonnet-4-5-20250929 | Claude | — | free |
| anthropic/claude-sonnet-4-6 | Claude | — | free |
| lightning-ai/gemma-4-31B-it | Gemma | — | free |
| lightning-ai/minimax-m2.5 | MiniMax | — | free |
| lightning-ai/nemotron-3-super-120b-a12b | Nemotron | — | free |
| openai/gpt-3.5-turbo | GPT | — | free |
| openai/gpt-4 | GPT | — | free |
| openai/gpt-4-turbo-preview | GPT | — | free |
| openai/gpt-5 | GPT | — | free |
| openai/gpt-5-mini | GPT | — | free |
| openai/gpt-5-nano | GPT | — | free |
| openai/gpt-5.2-2025-12-11 | GPT | — | free |
| openai/gpt-5.4-2026-03-05 | GPT | — | free |
| openai/gpt-5.5-2026-04-23 | GPT | — | free |
What you get
Reported ~30M tokens/month free
One OpenAI-compatible API key
No credit card, no waitlist
Many frontier models via one endpoint
Limitations
- Promo-origin limits may end
The free token allowance originated from a promotional offer and current terms could be reduced, gated, or discontinued at any time.
Sources
-
"Access the top open and closed models with one account. Pay by the token. No credit card. Get 30M free tok/month."
https://lightning.ai/models -
"Deploy now and get 30M free tokens monthly → https://go.lightning.ai/3OSZPJp ... That's it. No credit card. No catch. Free until June 18th."
https://www.instagram.com/p/DZERnZ6DFgb/ -
"Kimi K2.6 is the highest-ranked open weights model with an Intelligence Index score of 54. There are 253 open weights models out of 401 total evaluated."
https://artificialanalysis.ai/models/comparisons/kimi-k2-6-vs-gpt-oss-120b -
"New leader for US open weights intelligence: Nemotron 3 Ultra scores 48 on the Artificial Analysis Intelligence Index."
https://artificialanalysis.ai/articles/nvidia-nemotron-3-ultra-launch-announced -
"You can run 1 Studio for free and get 15 free credits per month. 15 free credits gets you ~80 GPU hours per month on interruptible machines."
https://lightning.ai/pricing/