Model Comparison

GLM-5 vs o3

GLM-5 significantly outperforms across most benchmarks. GLM-5 is 2.3x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

GLM-5 outperforms in 2 benchmarks (BrowseComp, SWE-Bench Verified), while o3 is better at 0 benchmarks.

GLM-5 significantly outperforms across most benchmarks.

Tue Jun 02 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GLM-5 costs less

For input processing, GLM-5 ($1.00/1M tokens) is 2.0x cheaper than o3 ($2.00/1M tokens).

For output processing, GLM-5 ($3.20/1M tokens) is 2.5x cheaper than o3 ($8.00/1M tokens).

In conclusion, o3 is more expensive than GLM-5.*

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

Lowest available price from all providers
Tue Jun 02 2026 • llm-stats.com
Zhipu AI
GLM-5
Input tokens$1.00
Output tokens$3.20
Best providerFriendliAI
OpenAI
o3
Input tokens$2.00
Output tokens$8.00
Best providerOpenAI
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Context Window

Maximum input and output token capacity

Both models have the same input context window of 200,000 tokens. GLM-5 can generate longer responses up to 128,000 tokens, while o3 is limited to 100,000 tokens.

Zhipu AI
GLM-5
Input200,000 tokens
Output128,000 tokens
OpenAI
o3
Input200,000 tokens
Output100,000 tokens
Tue Jun 02 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

o3 supports multimodal inputs, whereas GLM-5 does not.

o3 can handle both text and other forms of data like images, making it suitable for multimodal applications.

GLM-5

Text
Images
Audio
Video

o3

Text
Images
Audio
Video

License

Usage and distribution terms

GLM-5 is licensed under MIT, while o3 uses a proprietary license.

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

GLM-5

MIT

Open weights

o3

Proprietary

Closed source

Release Timeline

When each model was launched

GLM-5 was released on 2026-02-11, while o3 was released on 2025-04-16.

GLM-5 is 10 months newer than o3.

GLM-5

Feb 11, 2026

3 months ago

10mo newer
o3

Apr 16, 2025

1.1 years ago

Knowledge Cutoff

When training data ends

o3 has a documented knowledge cutoff of 2024-05-31, while GLM-5's cutoff date is not specified.

We can confirm o3's training data extends to 2024-05-31, but cannot make a direct comparison without GLM-5's cutoff date.

GLM-5

—

o3

May 2024

Provider Availability

GLM-5 is available from FriendliAI, ZAI. o3 is available from OpenAI.

GLM-5

friendli logo
FriendliAI
Input Price:Input: $1.00/1MOutput Price:Output: $3.20/1M
z logo
Unknown Organization
Input Price:Input: $1.00/1MOutput Price:Output: $3.20/1M

o3

openai logo
OpenAI
Input Price:Input: $2.00/1MOutput Price:Output: $8.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Zhipu AI
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher BrowseComp score (75.9% vs 49.7%)
Higher SWE-Bench Verified score (77.8% vs 69.1%)
OpenAI
Supports multimodal inputs
Zhipu AIGLM-5
OpenAIo3
Compare in Playground

Detailed Comparison

AI Model Comparison Table
Feature
Zhipu AI
GLM-5
OpenAI
o3

FAQ

Common questions about GLM-5 vs o3.

Which is better, GLM-5 or o3?

GLM-5 significantly outperforms across most benchmarks. GLM-5 is made by Zhipu AI and o3 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GLM-5 compare to o3 in benchmarks?

GLM-5 scores t2-bench: 89.7%, SWE-Bench Verified: 77.8%, BrowseComp: 75.9%, MCP Atlas: 67.8%, Terminal-Bench 2.0: 56.2%. o3 scores COLLIE: 98.4%, AIME 2024: 91.6%, ARC-AGI: 88.0%, MathVista: 86.8%, AIME 2025: 86.4%.

Is GLM-5 cheaper than o3?

GLM-5 is 2.0x cheaper for input tokens. GLM-5 costs $1.00/M input and $3.20/M output via friendli. o3 costs $2.00/M input and $8.00/M output via openai.

What are the context window sizes for GLM-5 and o3?

GLM-5 supports 200K tokens and o3 supports 200K 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 and o3?

Key differences include input pricing ($1.00 vs $2.00/M), multimodal support (no vs yes), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-5 and o3?

GLM-5 is developed by Zhipu AI and o3 is developed by OpenAI.