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thinkingmachines · Open weights

Inkling Small

Added Jul 31, 2026Open weights

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Use in the app

The direct-answer version of Thinking Machines' 276B-parameter open-weights multimodal Mixture-of-Experts model with 12B active parameters. It accepts text and images, and is designed for coding, tool use, instruction following, and general conversational work.

  • Tools
  • Vision
  • Audio input
Input
Text, Images, Audio
Output
Text
Discovery tier
Open weights

Pricing

USD per 1M tokens
Input
$0.45
Output
$1.20
Cache read
$0.10

Reference prices as published by the model provider. API example

Specifications

Context window
524.3K
Max output
32.8K
Average output (7 days)
577 tokens
Longer than 54% of 465 models

Side by side

Inkling Small compared

Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.

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Inkling SmallthinkingmachinesThis modelInkling Small ThinkingthinkingmachinesRemove
Providerthinkingmachinesthinkingmachines
Discovery tierOpen weightsOpen weights
AddedJul 31, 2026Jul 31, 2026
Limits
Context window524.29K524.29K
Max output32.77K32.77K
Average output577 tokens—
Pricing, USD per 1M tokens
Input$0.45$0.45
Output$1.20$1.20
Cache read$0.10$0.10
Benchmark indexes
Intelligence Index25.725.7
Coding Index52.952.9
Capabilities
ReasoningNoYes
ToolsYesYes
VisionYesYes
Audio inputYesYes
Reasoning effort—minimal, low, medium, high, max

Public evaluations

Benchmarks

Independent evaluation results, with how each score ranks among the models in the Noumen catalog.

  • Inkling Small
  • Inkling Small Thinking

Intelligence Index

  • Inkling Small25.7
  • Inkling Small Thinking25.7

Inkling Small: Better than 62% of 326 scored models

3.8Catalog models by score55.1

Indexes

  • Coding Index

    Composite of the coding evaluations

    • Inkling Small: 52.9Top
    • Inkling Small Thinking: 52.9Top

Agentic work

  • AutomationBench-AA

    Workflow automation, penalized for guardrail violations

    • Inkling Small: 4.8%Top
    • Inkling Small Thinking: 4.8%Top

  • AutomationBench-AA tasks completed

    Workflows finished end to end without a guardrail violation

    • Inkling Small: 0.6%Top
    • Inkling Small Thinking: 0.6%Top

  • Harvey LAB-AAv1.1

    Legal tasks passed in full, with no material hallucination

    • Inkling Small: 0.0%Top
    • Inkling Small Thinking: 0.0%Top

  • AA-Briefcasev1.1

    Agentic knowledge work, rated head to head

    • Inkling Small: 911 EloTop
    • Inkling Small Thinking: 911 EloTop

  • GDPval-AAv2.1

    Economically valuable occupational tasks, rated head to head

    • Inkling Small: 1,124 EloTop
    • Inkling Small Thinking: 1,124 EloTop

Document reasoning

  • GDP.pdf

    Professional reasoning over PDF documents, all-pass rate

    • Inkling Small: 11.2%Top
    • Inkling Small Thinking: 11.2%Top

  • AA-LCRv1.1

    Reasoning across long documents

    • Inkling Small: 75.7%Top
    • Inkling Small Thinking: 75.7%Top

  • MLCR-AA

    Long-context reasoning over medical records

    • Inkling Small: 7.8%Top
    • Inkling Small Thinking: 7.8%Top

Reasoning and knowledge

  • Humanity’s Last Exam

    Expert-level questions across academic fields

    • Inkling Small: 33.3%Top
    • Inkling Small Thinking: 33.3%Top

  • GPQA Diamond

    Graduate-level science questions

    • Inkling Small: 89.5%Top
    • Inkling Small Thinking: 89.5%Top

Coding

  • Terminal-Benchv4.0

    Practical software engineering in a terminal

    • Inkling Small: 1.0%Top
    • Inkling Small Thinking: 1.0%Top

  • SciCode

    Scientific computing in Python

    • Inkling Small: 49.7%Top
    • Inkling Small Thinking: 49.7%Top

Legacy evaluations

  • AA-LCR (unversioned)

    Long-context reasoning, earlier grading

    • Inkling Small: 75.7%Top
    • Inkling Small Thinking: 75.7%Top

Scores from Artificial Analysis, updated Oct 26, 2026. Artificial Analysis

Developers

Use it through the API

Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.

Read the quickstart
curl https://www.noumen.xyz/api/v1/chat/completions \
  -H "Authorization: Bearer $NOUMEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "thinkingmachines/Inkling-Small",
    "messages": [{ "role": "user", "content": "Explain this stack trace." }]
  }'
import os
from openai import OpenAI

client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
    model="thinkingmachines/Inkling-Small",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

thinkingmachines

Other thinkingmachines models, starting with the same family.