Thinking Machines Lab: Inkling 2 Small
thinkingmachines/inkling-2-small:free
Try Inkling 2 Small for free in your browser, and add it to your app for free with Puter.js AI API.
Try it free Add to your app// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms", {
model: "thinkingmachines/inkling-2-small:free"
}).then(response => {
document.body.innerHTML = response.message.content;
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.chat("Explain quantum computing in simple terms", {
model: "thinkingmachines/inkling-2-small:free"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
Model Card
Inkling 2 Small is a mixture-of-experts model from Thinking Machines Lab, announced on November 5, 2026 as the first model of its second Inkling generation. It has 594 billion total parameters with 17 billion active per token, accepts text and image input, produces text output, and supports variable reasoning effort.
The lab positions it for agentic coding and trained it with reinforcement learning on long-horizon coding tasks. It supports a context window of up to 1 million tokens. Thinking Machines Lab reports 86.3% on SWE-Bench Pro v2 (Hard) and 72.1% on DeepSWE v1.1, and Artificial Analysis gives it 31 on its Intelligence Index. These are the lab's own figures.
It suits coding agents and tool-calling workflows that need long context.
Context Window 1M
tokens
Max Output 131K
tokens
Input Cost $0
per million tokens
Output Cost $0
per million tokens
Input text, image
modalities
Tool Use Yes
Release Date Nov 5, 2026
Try Inkling 2 Small for free
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This playground uses the Puter.js AI API — no API keys or setup required.
More AI Models From Thinking Machines Lab
Find other Thinking Machines Lab models →
Inkling Small
Inkling Small is a mixture-of-experts model from Thinking Machines Lab, the AI research company co-founded by former OpenAI CTO Mira Murati. Released on July 30, 2026, about two weeks after the flagship Inkling FP4, it has 276 billion total parameters with 12 billion active per token, roughly a quarter of Inkling FP4's active-parameter count, and its weights are released under an Apache 2.0 license. Like its larger sibling, the model is multimodal, accepting text, image, and audio inputs and producing text output, and it supports controllable reasoning effort. Thinking Machines Lab reports 80.2% on SWE-bench Verified, 89.5% on GPQA Diamond, and 82.2% on IFBench. On the third-party Artificial Analysis Intelligence Index it scores 40, within a point of Inkling FP4's 41, and the company says it beats Inkling FP4 on several reasoning and coding benchmarks while trailing it on factual-knowledge evaluations. It is available through Together AI's inference platform.
ChatInkling FP4
Inkling FP4 is a mixture-of-experts model from Thinking Machines Lab, the AI research company co-founded by former OpenAI CTO Mira Murati. It was released in July 2026 as Thinking Machines Lab's first open-weights model, with 975 billion total parameters and 41 billion active per token, and is served here in FP4 precision. The model is multimodal, accepting text, image, and audio inputs and producing text output. It supports controllable reasoning effort, letting a request trade latency and cost for more chain-of-thought before answering. At its highest reasoning effort, Thinking Machines Lab reports 97.1% on AIME 2026, 87.2% on GPQA Diamond, and 77.6% on SWE-bench Verified. It launched on Together AI's inference platform the same day as the model's release.
Frequently Asked Questions
You can access Inkling 2 Small by Thinking Machines Lab through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.
Inkling 2 Small is free to try with a Puter account. Every account includes a free AI allowance, and you can chat with it in the playground on this page. You can upgrade your account anytime for a larger allowance.
Inkling 2 Small is free to integrate using the Puter.js AI API. With the User-Pays Model, you can add AI to your app for $0, since users cover their own AI usage through their Puter account.
| Price per 1M tokens | |
|---|---|
| Input | $0 |
| Output | $0 |
Inkling 2 Small was created by Thinking Machines Lab and released on Nov 5, 2026.
Inkling 2 Small supports a context window of 1M tokens. For reference, that is roughly equivalent to 2,097 pages of text.
Inkling 2 Small can generate up to 131K tokens in a single response.
Inkling 2 Small accepts the following input types: text, image. It produces: text.
Yes, Inkling 2 Small supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.
Yes — the Inkling 2 Small API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.
Add Inkling 2 Small to your app for free
Developers can integrate Inkling 2 Small for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.