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Gemini 3 Pro vs GLM-5.3

GLM-5.3 significantly outperforms across most benchmarks. GLM-5.3 is 2.1x cheaper per token.

Google · Zhipu AI · Updated for 2026

Which is better?

Gemini 3 Pro outperforms in 0 benchmarks, while GLM-5.3 is better at 1 benchmark (Humanity's Last Exam). GLM-5.3 significantly outperforms across most benchmarks.

On price, GLM-5.3 is roughly 2.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3 Pro also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Based on current benchmark, pricing, and model metadata for 2026.

Choose Gemini 3 Pro

  • you process long inputs — it offers a 1,048,576 token context window

Choose GLM-5.3

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • cost matters — it's about 2.1x cheaper per token
  • you want the most recent training data — it shipped Aug 2026

At a glance

The differences that matter most.

Gemini 3 Pro
Google
GLM-5.3
Zhipu AI
Benchmark wins
0 of 1
1 of 1
Input price
$2.00 / M
$1.40 / M
Output price
$12.00 / M
$4.40 / M
Context window
1,048,576
1,000,000
Released
Nov 2025
Aug 2026
License
Proprietary
Unknown

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Gemini 3 Pro outperforms in 0 benchmarks, while GLM-5.3 is better at 1 benchmark (Humanity's Last Exam).

GLM-5.3 significantly outperforms across most benchmarks.

Tue Aug 25 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Pricing Analysis

Price comparison per million tokens

GLM-5.3 costs less

For input processing, Gemini 3 Pro ($2.00/1M tokens) is 1.4x more expensive than GLM-5.3 ($1.40/1M tokens).

For output processing, Gemini 3 Pro ($12.00/1M tokens) is 2.7x more expensive than GLM-5.3 ($4.40/1M tokens).

In conclusion, Gemini 3 Pro is more expensive than GLM-5.3.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Tue Aug 25 2026 • llm-stats.com
Google
Gemini 3 Pro
Input tokens$2.00
Output tokens$12.00
Best providerGoogle
Zhipu AI
GLM-5.3
Input tokens$1.40
Output tokens$4.40
Best providerUnknown Organization
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3 Pro accepts 1,048,576 input tokens compared to GLM-5.3's 1,000,000 tokens. GLM-5.3 can generate longer responses up to 128,000 tokens, while Gemini 3 Pro is limited to 65,536 tokens.

Google
Gemini 3 Pro
Input1,048,576 tokens
Output65,536 tokens
Zhipu AI
GLM-5.3
Input1,000,000 tokens
Output128,000 tokens
Tue Aug 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 3 Pro supports multimodal inputs, whereas GLM-5.3 does not.

Gemini 3 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 3 Pro

Text
Images
Audio
Video

GLM-5.3

Text
Images
Audio
Video

Release Timeline

When each model was launched

Gemini 3 Pro was released on 2025-11-18, while GLM-5.3 was released on 2026-08-14.

GLM-5.3 is 9 months newer than Gemini 3 Pro.

Gemini 3 Pro

Nov 18, 2025

9 months ago

GLM-5.3

Aug 14, 2026

1 weeks ago

8mo newer

Knowledge Cutoff

When training data ends

Gemini 3 Pro has a documented knowledge cutoff of 2025-01-31, while GLM-5.3's cutoff date is not specified.

We can confirm Gemini 3 Pro's training data extends to 2025-01-31, but cannot make a direct comparison without GLM-5.3's cutoff date.

Gemini 3 Pro

Jan 2025

GLM-5.3

—

Provider Availability

Gemini 3 Pro is available from Google. GLM-5.3 is available from ZAI.

Gemini 3 Pro

google logo
Google
Input Price:Input: $2.00/1MOutput Price:Output: $12.00/1M

GLM-5.3

z logo
Unknown Organization
Input Price:Input: $1.40/1MOutput Price:Output: $4.40/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 3 Pro and GLM-5.3 side-by-side, then vote on the output you prefer.

Gemini 3 Pro
✓ Preferred
GLM-5.3
Open in Playground

FAQ

Common questions about Gemini 3 Pro vs GLM-5.3.

Which is better, Gemini 3 Pro or GLM-5.3?

GLM-5.3 significantly outperforms across most benchmarks. Gemini 3 Pro is made by Google and GLM-5.3 is made by Zhipu AI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3 Pro compare to GLM-5.3 in benchmarks?

Gemini 3 Pro scores AIME 2025: 100.0%, Vending-Bench 2: 100.0%, Global PIQA: 93.4%, GPQA: 91.9%, MMMLU: 91.8%. GLM-5.3 scores Terminal-Bench 2.1: 88.2%, CyberGym: 84.5%, FrontierSWE: 78.1%, Toolathlon: 73.0%, DeepSWE 1.1: 66.9%.

Is Gemini 3 Pro cheaper than GLM-5.3?

GLM-5.3 is 1.4x cheaper for input tokens. Gemini 3 Pro costs $2.00/M input and $12.00/M output via google. GLM-5.3 costs $1.40/M input and $4.40/M output via z.

What are the context window sizes for Gemini 3 Pro and GLM-5.3?

Gemini 3 Pro supports 1.0M tokens and GLM-5.3 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3 Pro and GLM-5.3?

Key differences include context window (1.0M vs 1.0M), input pricing ($2.00 vs $1.40/M), multimodal support (yes vs no), licensing (Proprietary vs Unknown). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3 Pro and GLM-5.3?

Gemini 3 Pro is developed by Google and GLM-5.3 is developed by Zhipu AI.

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