What is the difference between GPT-5.1 and Inkling?

GPT-5.1 is developed by OpenAI while Inkling is developed by Thinking Machines. GPT-5.1 has a 400K token context window vs Inkling's 1.0M. You can compare their actual outputs across 51 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1 or Inkling?

It depends on your use case. GPT-5.1 and Inkling each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 51 challenges so you can judge which fits your needs best.

How much does GPT-5.1 cost compared to Inkling?

GPT-5.1 costs $1.25/M input tokens and Inkling costs $1/M input tokens. Inkling is $0.25/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-5.1 and Inkling on Rival?

This page shows a side-by-side comparison of GPT-5.1 and Inkling across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

What is the difference between GPT-5.1 and Inkling?

GPT-5.1 is developed by OpenAI while Inkling is developed by Thinking Machines. GPT-5.1 has a 400K token context window vs Inkling's 1.0M. You can compare their actual outputs across 51 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.1 or Inkling?

It depends on your use case. GPT-5.1 and Inkling each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 51 challenges so you can judge which fits your needs best.

How much does GPT-5.1 cost compared to Inkling?

GPT-5.1 costs $1.25/M input tokens and Inkling costs $1/M input tokens. Inkling is $0.25/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-5.1 and Inkling on Rival?

This page shows a side-by-side comparison of GPT-5.1 and Inkling across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

GPT-5.1 vs Inkling: Which Is Better?

Updated Jul 2026

Our Verdict

GPT-5.1

Inkling

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

What do GPT-5.1 and Inkling say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.1

Input

$1.25

Output

$10.00

Inkling

Input

$1.00

1.3× cheaper

Output

$4.05

2.5× cheaper

Inkling is cheaper on both — 1.3× input, 2.5× output

Writing DNA

Style Comparison

Similarity

42%

Inkling uses 3.9x more emoji

GPT-5.1

Inkling

62%Vocabulary57%

19wSentence Length19w

0.29Hedging0.30

3.5Bold5.0

7.2Lists2.7

0.00Emoji0.04

0.61Headings0.49

0.03Transitions0.06

Based on 14 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.1 vs Ox AlphaNew provider

GPT-5.1 vs MiniMax M3New provider

GPT-5.1 vs Llama 4 MaverickNew provider

Updated Jul 2026

Our Verdict

GPT-5.1

Inkling

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

What do GPT-5.1 and Inkling say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

GPT-5.1

Input

$1.25

Output

$10.00

Inkling

Input

$1.00

1.3× cheaper

Output

$4.05

2.5× cheaper

Inkling is cheaper on both — 1.3× input, 2.5× output

Writing DNA

Style Comparison

Similarity

42%

Inkling uses 3.9x more emoji

GPT-5.1

Inkling

62%Vocabulary57%

19wSentence Length19w

0.29Hedging0.30

3.5Bold5.0

7.2Lists2.7

0.00Emoji0.04

0.61Headings0.49

0.03Transitions0.06

Based on 14 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.1 vs Ox AlphaNew provider

GPT-5.1 vs MiniMax M3New provider

GPT-5.1 vs Llama 4 MaverickNew provider