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Thinking Machines: Inkling

thinkingmachines/inkling

Inkling is Thinking Machines’s open-weights AI model, released Jul 15, 2026. It costs $0.95/M input and $4.05/M output tokens, and handles a 1M-token context window.

Inkling is an open-weight multimodal mixture-of-experts model from Thinking Machines Lab, with 41B active parameters out of 975B total.

Context
1M
Input
$0.95 / 1M
Output
$4.05 / 1M
Released
Jul 15, 2026
Modalities
textimageaudiotext

Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where Inkling lands among all models tracked on Model Beat.

43.0
Intelligence Index
Epoch AI
43rd percentile of tracked models
49.0
Coding Index
Epoch AI
49th percentile of tracked models

Reasoning

7 evals
ARC-AGI79.5%

Abstract visual reasoning

ARC-AGI-236.5%

Harder abstract reasoning

GPQA Diamond88.3%

Graduate-level scientific reasoning

Humanity's Last Exam31.9%

Frontier of human expert knowledge

SimpleBench50.0%

Common-sense trick questions

SimpleQA Verified40.3%

Factual accuracy & hallucination

WeirdML32.3%

Novel ML problem-solving

Coding

2 evals
SciCode47.0%

Scientific research coding

WebDev Arena1408

Human-rated web development

Math

1 evals
AIME 2024/202588.9%

Olympiad-qualifier math

In the news

4

Changelog

7
  • Inkling: cheapest credible provider via DeepInfra now $0.95 per 1M input tokens (was $1, -5%)cheapest provider · Sep 6, 2026
  • Inkling: cheapest credible provider via BaseTen now $1 per 1M input tokens (was $0.95, +5%)cheapest provider · Sep 3, 2026
  • Inkling: Humanity's Last Exam improved from 29.7% to 31.9% (+7%)benchmark · Aug 6, 2026
  • Inkling: cheapest credible provider via DeepInfra now $0.95 per 1M input tokens (was $1, -5%)cheapest provider · Aug 6, 2026
  • Inkling: context window changed from 524,288 to 1,048,576 tokenscontext · Jul 23, 2026
  • Inkling: context window changed from 1,048,576 to 524,288 tokenscontext · Jul 21, 2026
  • Inkling (Thinking Machines) added to the tracker: $1/$4.05 per 1M, 1M context.tracked · Jul 18, 2026

Compare Inkling with

Frequently asked questions

What is Inkling?

Inkling is an open-weight multimodal mixture-of-experts model from Thinking Machines Lab, with 41B active parameters out of 975B total.

Who created Inkling?

Inkling is an AI model developed by Thinking Machines, released Jul 15, 2026.

How much does Inkling cost?

Inkling is served from $0.95 per million input tokens and $4.05 per million output tokens (cheapest credible provider on OpenRouter: DeepInfra).

What is Inkling's context window?

Inkling supports a context window of up to 1M tokens.

How does Inkling perform on benchmarks?

On standardized evaluations tracked by Epoch AI, Inkling scores 88.3% on GPQA Diamond, 31.9% on Humanity's Last Exam, 47.0% on SciCode.

Is Inkling open source?

Inkling is released with open weights (Open weights (unrestricted)), so the model can be downloaded and self-hosted.

Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Sep 10, 2026.