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GLM-5.3-Flash vs Nova 2 Omni

GLM-5.3-Flash leads the LLM Stats Score 50.7 to 25.9.

Zhipu AI · Amazon · Updated for 2026

Which is better?

GLM-5.3-Flash leads the overall LLM Stats Score 50.7 to 25.9, ranking #16 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose GLM-5.3-Flash

  • overall performance matters — it scores 50.7 and ranks #16 on LLM Stats
  • your work emphasizes reasoning and agents — it leads those capability indexes
  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

Choose Nova 2 Omni

  • you are already invested in the Amazon ecosystem

At a glance

The differences that matter most.

GLM-5.3-Flash
Zhipu AI
Nova 2 Omni
Amazon
Core performance indexes
LLM Stats Score
50.7
#16
25.9
#145
Reasoning
49.5
#15
28.2
#121
Agents
37.0
#13
4.5
#146
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.15 / M
— / M
Output price
$0.50 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
GLM-5.3-Flash
Nova 2 Omni
Vision
31.5#25
7.9#135
Tool use
32.2#5
16.3#81
Multimodal
30.8#26
9.3#118
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

15 reported for GLM-5.3-Flash · 18 for Nova 2 Omni

No common benchmarks found

GLM-5.3-Flash and Nova 2 Omnidon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only GLM-5.3-Flash specifies input context (1,048,576 tokens). Only GLM-5.3-Flash specifies output context (131,072 tokens).

Zhipu AI
GLM-5.3-Flash
Input1,048,576 tokens
Output131,072 tokens
Amazon
Nova 2 Omni
Input- tokens
Output- tokens
Fri Sep 04 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GLM-5.3-Flash and Nova 2 Omni support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GLM-5.3-Flash

Text
Images
Audio
Video

Nova 2 Omni

Text
Images
Audio
Video

License

Usage and distribution terms

GLM-5.3-Flash is licensed under MIT, while Nova 2 Omni uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

GLM-5.3-Flash

MIT

Open weights

Nova 2 Omni

Proprietary

Closed source

Release Timeline

When each model was launched

GLM-5.3-Flash was released on 2026-08-26, while Nova 2 Omni was released on 2025-12-02.

GLM-5.3-Flash is 9 months newer than Nova 2 Omni.

GLM-5.3-Flash

Aug 26, 2026

1 weeks ago

8mo newer
Nova 2 Omni

Dec 2, 2025

9 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against GLM-5.3-Flash and Nova 2 Omni side-by-side, then vote on the output you prefer.

GLM-5.3-Flash
✓ Preferred
Nova 2 Omni
Open in Playground

FAQ

Common questions about GLM-5.3-Flash vs Nova 2 Omni.

Which is better, GLM-5.3-Flash or Nova 2 Omni?

GLM-5.3-Flash leads the LLM Stats Score 50.7 to 25.9. GLM-5.3-Flash is made by Zhipu AI and Nova 2 Omni is made by Amazon. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GLM-5.3-Flash compare to Nova 2 Omni in benchmarks?

GLM-5.3-Flash scores CharXiv-R: 89.4%, Terminal-Bench 2.1: 84.3%, MMVU: 80.5%, Toolathlon: 78.4%, Chartography: 78.0%. Nova 2 Omni scores AIME 2025: 92.1%, RefCOCOg: 86.3%, ScreenSpot: 85.4%, MMLU-Pro: 80.7%, Tau2 Telecom: 80.0%.

What are the context window sizes for GLM-5.3-Flash and Nova 2 Omni?

GLM-5.3-Flash supports 1.0M tokens and Nova 2 Omni supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GLM-5.3-Flash and Nova 2 Omni?

Key differences include LLM Stats Score (50.7 vs 25.9), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-5.3-Flash and Nova 2 Omni?

GLM-5.3-Flash is developed by Zhipu AI and Nova 2 Omni is developed by Amazon.

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