4 providers · 8 free models · Last updated: 01 Nov 2026
Free reasoning APIs offering extended thinking and step-by-step verification, featuring Nemotron Reasoning, Inkling, and DeepSeek R1 distills.
Total available in this directory: 4 providers, 8 free models. Verified limits below.
Chain-of-thought reasoning model with 1M context.
Base URL: https://openrouter.ai/api/v1
Model: thinkingmachines/inkling:free
Provider: OpenRouterfrom openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="your-api-key", # from OpenRouter
)
response = client.chat.completions.create(
model="thinkingmachines/inkling:free",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)| Model | Provider | Cost | Context | RPM | TPM | RPD | Day tokens | Verified |
|---|---|---|---|---|---|---|---|---|
| Nemotron 3 Ultra Free | OpenCode Zen | $0 (promo) | 256K - 1M | Not published | Not published | Not published | Not published | 2026-11-01 |
| nvidia/nemotron-3-nano-omni-30b-a3b-reasoning:free | OpenRouter | $0 | 250K | 20 | Provider-dependent | 50 (below $10 credits) / 1,000 ($10+ credits) | Not published | 2026-11-01 |
| nvidia/nemotron-3-ultra-550b-a55b:free | OpenRouter | $0 | 1000000 | 20 | Provider-dependent | 50 (below $10 credits) / 1,000 ($10+ credits) | Not published | 2026-11-01 |
| thinkingmachines/inkling-small:free | OpenRouter | $0 | 1024K | 20 | Provider-dependent | 50 (below $10 credits) / 1,000 ($10+ credits) | Not published | 2026-11-01 |
| thinkingmachines/inkling:free | OpenRouter | $0 | 1024K | 20 | Provider-dependent | 50 (below $10 credits) / 1,000 ($10+ credits) | Not published | 2026-11-01 |
| ~80 free models (Llama 3.x/4, Qwen, Gemma, DeepSeek-R1 distills, FLUX, Whisper, BGE embeddings) | Cloudflare Workers AI | $0 | 8K-128K+ (model-dependent) | 300 text gen (720-1,500 other tasks) | Model-dependent | Not published | 10,000 neurons/day | 2026-08-30 |
| @cf/deepseek-ai/deepseek-r1-distill-qwen-32b | Cloudflare Workers AI | $0 | 128K | 300 | Model-dependent | Not published | 10,000 neurons/day | 2026-10-29 |
| deepseek-ai/DeepSeek-R1-Distill-Qwen-7B | SiliconFlow | $0 | 32K | 1000 | 40K | 100 | Not published | 2026-10-29 |
Machine-readable: Markdown Twin · providers.json · sitemap.xml