# Inkling Small

Inkling Small is Thinking Machines Lab's smaller open-weight generalist for reasoning, coding, and tool use. Its text and image understanding supports work with documents, charts, and diagrams. Its published context window is 65,536 tokens. The advertised input rate is $0.58 per million input tokens. The advertised output rate is $1.44 per million output tokens.

- Model identifier: ` thinkingmachines/inkling-small `
- Creator: Thinking Machines
- Providers: Thinking Machines
- Model type: Text generation
- Canonical model page: [Inkling Small](<https://impossibl.com/thinkingmachines/inkling-small>)
- API availability: Listed as serving through Impossibl.

## Providers

Thinking Machines hosts Inkling Small. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

| Provider | Endpoint location | Routes | Verified context window | Tool calling |
| --- | --- | --- | --- | --- |
| Thinking Machines | Not specified | 1 | Not verified | Not verified |

The model price applies whichever provider serves the request. Endpoint locations do not guarantee inference residency.

## Specs and Capabilities

- Context window: 65,536 tokens
- Maximum output tokens: Not published in the public catalog; this is separate from the context window.
- Inputs: text, image
- Outputs: text
- Tool calling: Not published

## API access

Use ` thinkingmachines/inkling-small ` as the model identifier through the Impossibl API.

Published API endpoints:

- ` /v1/chat/completions `

[API quickstart](<https://impossibl.com/docs/agent-quickstart>) · [Models and billing documentation](<https://impossibl.com/docs/models>)

## Published API prices

All rates are in USD. An unpublished rate is unknown, not zero. Workspace-specific pricing, taxes, balance-purchase fees, billing adjustments, and tool charges can affect the amount paid.

| Usage | Published base rate | Billing unit |
| --- | --- | --- |
| Input | $0.58 | per million input tokens |
| Output | $1.44 | per million output tokens |
| Cache read | $0.116 | per million cached input tokens |
| Cache write (default retention) | Not published | per million tokens |
| Cache write (one-hour retention) | Not published | per million tokens |
| Audio input | Not published | per million audio input tokens |

## Availability and retirement

The model is listed as serving. No retirement is announced in the current public catalog.

## Frequently asked questions

### What is Inkling Small?

Inkling Small is Thinking Machines Lab's smaller open-weight generalist for reasoning, coding, and tool use. Its text and image understanding supports work with documents, charts, and diagrams.

Sources: [Thinking Machines release announcement](<https://thinkingmachines.ai/news/inkling-small/>); [Thinking Machines model documentation](<https://tinker-docs.thinkingmachines.ai/tinker/models/>)

### How much does Inkling Small cost?

Inkling Small costs $0.58 per million input tokens and $1.44 per million output tokens through the Impossibl API. Cache reads cost $0.116 per million tokens. All rates are in USD.

### What is the context length of Inkling Small?

Inkling Small has a 65,536-token context window through the Impossibl API.

### What inputs and outputs does Inkling Small support?

Inkling Small accepts text and image as input. Inkling Small returns text.

### How do I use Inkling Small through an API?

Inkling Small is available through the Impossibl API. Use thinkingmachines/inkling-small as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

## Sources and related links

Prices, limits, capabilities, endpoints, and availability come from the public Impossibl catalog. Creator documentation supplies descriptions and release dates where available; it does not override the published API offering.

- [Public Impossibl model catalog](<https://api.impossibl.com/v1/models>)
- [Full model directory as JSON](<https://impossibl.com/models.json>)
- [Inkling Small: model details and pricing](<https://impossibl.com/thinkingmachines/inkling-small>)
- [Model directory](<https://impossibl.com/models>)
- [Thinking Machines release announcement](<https://thinkingmachines.ai/news/inkling-small/>)
- [Thinking Machines model documentation](<https://tinker-docs.thinkingmachines.ai/tinker/models/>)