What is the difference between DeepSeek V4 Pro and GLM 5.1?

DeepSeek V4 Pro is developed by DeepSeek while GLM 5.1 is developed by Z.ai. DeepSeek V4 Pro has a 1.0M token context window vs GLM 5.1's 203K. in 24 community votes on Rival, GLM 5.1 wins 71% of head-to-head matchups. These results are based on blind head-to-head voting across 53 challenges.

Which is better, DeepSeek V4 Pro or GLM 5.1?

Based on 24 community votes on Rival, GLM 5.1 wins 71% of head-to-head matchups against DeepSeek V4 Pro. GLM 5.1 is strongest in Web Design, Image Generation, Reasoning.

How much does DeepSeek V4 Pro cost compared to GLM 5.1?

DeepSeek V4 Pro costs $1.74/M input tokens and GLM 5.1 costs $1.4/M input tokens. GLM 5.1 is $0.34/M cheaper per input. GLM 5.1 also wins more often in community votes, making it the better value.

How are DeepSeek V4 Pro vs GLM 5.1 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 24 votes have been collected for this pair across 53 challenges. All vote data is part of Rival's open dataset.

What is the difference between DeepSeek V4 Pro and GLM 5.1?

DeepSeek V4 Pro is developed by DeepSeek while GLM 5.1 is developed by Z.ai. DeepSeek V4 Pro has a 1.0M token context window vs GLM 5.1's 203K. in 24 community votes on Rival, GLM 5.1 wins 71% of head-to-head matchups. These results are based on blind head-to-head voting across 53 challenges.

Which is better, DeepSeek V4 Pro or GLM 5.1?

Based on 24 community votes on Rival, GLM 5.1 wins 71% of head-to-head matchups against DeepSeek V4 Pro. GLM 5.1 is strongest in Web Design, Image Generation, Reasoning.

How much does DeepSeek V4 Pro cost compared to GLM 5.1?

DeepSeek V4 Pro costs $1.74/M input tokens and GLM 5.1 costs $1.4/M input tokens. GLM 5.1 is $0.34/M cheaper per input. GLM 5.1 also wins more often in community votes, making it the better value.

How are DeepSeek V4 Pro vs GLM 5.1 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 24 votes have been collected for this pair across 53 challenges. All vote data is part of Rival's open dataset.

Updated Apr 2026

DeepSeek V4 ProvsGLM 5.1

GLM 5.1 wins 71% of 24 blind community votes against DeepSeek V4 Pro on Rival.

DeepSeek V4 Pro and GLM 5.1 compared across 53 shared prompts
Spec	DeepSeek V4 Pro	GLM 5.1
Win rate	29%	71%
Input price	$1.74/M tokens	$1.4/M tokens
Output price	$3.48/M tokens	$4.4/M tokens
Context window	1.0M tokens	203K tokens
Released	Apr 2026	Apr 2026

Our Verdict

GLM 5.1Winner

DeepSeek V4 ProRunner-up

Pick GLM 5.1. In 24 blind votes, GLM 5.1 wins 71% of the time. That's not luck.

GLM 5.1 wins 3 categories, Reasoning by the widest margin.

Clear winner

What do DeepSeek V4 Pro and GLM 5.1 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

DeepSeek V4 Pro

Input

$1.74

Output

$3.48

1.3× cheaper

GLM 5.1

Input

$1.40

1.2× cheaper

Output

$4.40

GLM 5.1 wins input (1.2× cheaper)·DeepSeek V4 Pro wins output (1.3× cheaper)

Writing DNA

Style Comparison

Similarity

67%

DeepSeek V4 Pro uses 3.5x more emoji

DeepSeek V4 Pro

GLM 5.1

57%Vocabulary54%

18wSentence Length18w

0.52Hedging0.31

3.3Bold3.6

2.3Lists2.6

0.04Emoji0.00

0.45Headings0.43

0.15Transitions0.11

Based on 27 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

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GLM 5.1 vs DeepSeek V3.1Cross-provider

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GLM 5.1 vs DeepSeek R1Cross-provider

GLM 5.1 vs DeepSeek R1 0528Cross-provider

Updated Apr 2026

DeepSeek V4 ProvsGLM 5.1

GLM 5.1 wins 71% of 24 blind community votes against DeepSeek V4 Pro on Rival.

DeepSeek V4 Pro and GLM 5.1 compared across 53 shared prompts
Spec	DeepSeek V4 Pro	GLM 5.1
Win rate	29%	71%
Input price	$1.74/M tokens	$1.4/M tokens
Output price	$3.48/M tokens	$4.4/M tokens
Context window	1.0M tokens	203K tokens
Released	Apr 2026	Apr 2026

Our Verdict

GLM 5.1Winner

DeepSeek V4 ProRunner-up

Pick GLM 5.1. In 24 blind votes, GLM 5.1 wins 71% of the time. That's not luck.

GLM 5.1 wins 3 categories, Reasoning by the widest margin.

Clear winner

What do DeepSeek V4 Pro and GLM 5.1 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

DeepSeek V4 Pro

Input

$1.74

Output

$3.48

1.3× cheaper

GLM 5.1

Input

$1.40

1.2× cheaper

Output

$4.40

GLM 5.1 wins input (1.2× cheaper)·DeepSeek V4 Pro wins output (1.3× cheaper)

Writing DNA

Style Comparison

Similarity

67%

DeepSeek V4 Pro uses 3.5x more emoji

DeepSeek V4 Pro

GLM 5.1

57%Vocabulary54%

18wSentence Length18w

0.52Hedging0.31

3.3Bold3.6

2.3Lists2.6

0.04Emoji0.00

0.45Headings0.43

0.15Transitions0.11

Based on 27 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

DeepSeek V4 Pro vs MiniMax M3New provider

DeepSeek V4 Pro vs Ox AlphaNew provider

DeepSeek V4 Pro vs MiniMax M2.7New provider

DeepSeek V4 Pro vs Claude Opus 4.1New provider

GLM 5.1 vs DeepSeek V3.1Cross-provider

GLM 5.1 vs DeepSeek Prover V2Cross-provider

GLM 5.1 vs DeepSeek R1Cross-provider

GLM 5.1 vs DeepSeek R1 0528Cross-provider