What is the difference between GPT-5.4 and Thinking Machines: Inkling?

GPT-5.4 is developed by OpenAI while Thinking Machines: Inkling is developed by Thinking Machines. GPT-5.4 has a 1.1M token context window vs Thinking Machines: Inkling's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 or Thinking Machines: Inkling?

It depends on your use case. GPT-5.4 and Thinking Machines: Inkling each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does GPT-5.4 cost compared to Thinking Machines: Inkling?

GPT-5.4 costs $2.5/M input tokens and Thinking Machines: Inkling costs $1/M input tokens. Thinking Machines: Inkling is $1.50/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-5.4 and Thinking Machines: Inkling on Rival?

This page shows a side-by-side comparison of GPT-5.4 and Thinking Machines: 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-5.4 and Thinking Machines: Inkling?

GPT-5.4 is developed by OpenAI while Thinking Machines: Inkling is developed by Thinking Machines. GPT-5.4 has a 1.1M token context window vs Thinking Machines: Inkling's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, GPT-5.4 or Thinking Machines: Inkling?

It depends on your use case. GPT-5.4 and Thinking Machines: Inkling each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does GPT-5.4 cost compared to Thinking Machines: Inkling?

GPT-5.4 costs $2.5/M input tokens and Thinking Machines: Inkling costs $1/M input tokens. Thinking Machines: Inkling is $1.50/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-5.4 and Thinking Machines: Inkling on Rival?

This page shows a side-by-side comparison of GPT-5.4 and Thinking Machines: 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-5.4 vs Thinking Machines: Inkling: Which Is Better?

Updated Jul 2026

Our Verdict

GPT-5.4

Thinking Machines: Inkling

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

Thinking Machines: Inkling is 3.7x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-5.4

Input

$2.50

Output

$15.00

Thinking Machines: Inkling

Input

$1.00

2.5× cheaper

Output

$4.05

3.7× cheaper

Thinking Machines: Inkling is cheaper on both — 2.5× input, 3.7× output

Writing DNA

Style Comparison

Similarity

41%

Thinking Machines: Inkling uses 3.9x more emoji

GPT-5.4

Thinking Machines: Inkling

54%Vocabulary57%

28wSentence Length19w

0.69Hedging0.30

4.1Bold5.0

8.1Lists2.7

0.00Emoji0.04

1.84Headings0.49

0.02Transitions0.06

Based on 22 + 27 text responses

Research

What we learned reading every model

GPT-5.4 and Thinking Machines: Inkling have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

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GPT-5.4 vs Llama 4 MaverickNew provider

GPT-5.4 vs Claude Opus 4New provider

Updated Jul 2026

Our Verdict

GPT-5.4

Thinking Machines: Inkling

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

Thinking Machines: Inkling is 3.7x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

GPT-5.4

Input

$2.50

Output

$15.00

Thinking Machines: Inkling

Input

$1.00

2.5× cheaper

Output

$4.05

3.7× cheaper

Thinking Machines: Inkling is cheaper on both — 2.5× input, 3.7× output

Writing DNA

Style Comparison

Similarity

41%

Thinking Machines: Inkling uses 3.9x more emoji

GPT-5.4

Thinking Machines: Inkling

54%Vocabulary57%

28wSentence Length19w

0.69Hedging0.30

4.1Bold5.0

8.1Lists2.7

0.00Emoji0.04

1.84Headings0.49

0.02Transitions0.06

Based on 22 + 27 text responses

Research

What we learned reading every model

GPT-5.4 and Thinking Machines: Inkling have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.4 vs MiniMax M3New provider

GPT-5.4 vs Llama 4 MaverickNew provider

GPT-5.4 vs Claude Opus 4New provider