Model Comparison

GLM-5 vs o3-miniWhich is better in 2026?

GLM-5 significantly outperforms across most benchmarks. GLM-5 is 1.2x cheaper per token.

Verdict: GLM-5 vs o3-mini — which is better?

GLM-5 (by Zhipu AI) and o3-mini (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

GLM-5 outperforms in 1 benchmarks (SWE-Bench Verified), while o3-mini is better at 0 benchmarks. GLM-5 significantly outperforms across most benchmarks.

On price, GLM-5 is roughly 1.2x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Choose GLM-5 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • cost matters — it's about 1.2x cheaper per token
  • you want the most recent training data — it shipped Feb 2026
  • you need open weights you can self-host or fine-tune

Choose o3-mini if…

  • you want predictable pricing at $1.10/M input and $4.40/M output
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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

GLM-5 outperforms in 1 benchmarks (SWE-Bench Verified), while o3-mini is better at 0 benchmarks.

GLM-5 significantly outperforms across most benchmarks.

Sat Jun 06 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 1.1x cheaper than o3-mini ($1.10/1M tokens).

For output processing, GLM-5 ($3.20/1M tokens) is 1.4x cheaper than o3-mini ($4.40/1M tokens).

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

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

Lowest available price from all providers
Sat Jun 06 2026 • llm-stats.com
Zhipu AI
GLM-5
Input tokens$1.00
Output tokens$3.20
Best providerFriendliAI
OpenAI
o3-mini
Input tokens$1.10
Output tokens$4.40
Best providerAzure
Notice missing or incorrect data?Start an Issue→

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-mini is limited to 100,000 tokens.

Zhipu AI
GLM-5
Input200,000 tokens
Output128,000 tokens
OpenAI
o3-mini
Input200,000 tokens
Output100,000 tokens
Sat Jun 06 2026 • llm-stats.com

License

Usage and distribution terms

GLM-5 is licensed under MIT, while o3-mini 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-mini

Proprietary

Closed source

Release Timeline

When each model was launched

GLM-5 was released on 2026-02-11, while o3-mini was released on 2025-01-30.

GLM-5 is 13 months newer than o3-mini.

GLM-5

Feb 11, 2026

3 months ago

1.0yr newer
o3-mini

Jan 30, 2025

1.3 years ago

Knowledge Cutoff

When training data ends

o3-mini has a documented knowledge cutoff of 2023-09-30, while GLM-5's cutoff date is not specified.

We can confirm o3-mini's training data extends to 2023-09-30, but cannot make a direct comparison without GLM-5's cutoff date.

GLM-5

—

o3-mini

Sep 2023

Provider Availability

GLM-5 is available from FriendliAI, ZAI. o3-mini is available from Azure, 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-mini

azure logo
Azure
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
openai logo
OpenAI
Input Price:Input: $1.10/1MOutput Price:Output: $4.40/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Zhipu AI
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher SWE-Bench Verified score (77.8% vs 49.3%)
OpenAI

No standout differentiators in the data we have for this pair.

Detailed Comparison

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

FAQ

Common questions about GLM-5 vs o3-mini.

Which is better, GLM-5 or o3-mini?

GLM-5 significantly outperforms across most benchmarks. GLM-5 is made by Zhipu AI and o3-mini 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-mini 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-mini scores COLLIE: 98.7%, MATH: 97.9%, IFEval: 93.9%, MGSM: 92.0%, AIME 2024: 87.3%.

Is GLM-5 cheaper than o3-mini?

GLM-5 is 1.1x cheaper for input tokens. GLM-5 costs $1.00/M input and $3.20/M output via friendli. o3-mini costs $1.10/M input and $4.40/M output via azure.

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

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

Key differences include input pricing ($1.00 vs $1.10/M), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-5 and o3-mini?

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

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