GLM-5.3 vs GPT-5.4
GLM-5.3 significantly outperforms across most benchmarks. GLM-5.3 is 2.6x cheaper per token.
Zhipu AI · OpenAI · Updated for 2026
Which is better?
GLM-5.3 outperforms in 4 benchmarks (DeepSWE 1.1, FrontierSWE, Humanity's Last Exam, Toolathlon), while GPT-5.4 is better at 0 benchmarks. GLM-5.3 significantly outperforms across most benchmarks.
On price, GLM-5.3 is roughly 2.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current benchmark, pricing, and model metadata for 2026.
Choose GLM-5.3
- you want the strongest raw capability — it leads on 4 of 4 shared benchmarks
- cost matters — it's about 2.6x cheaper per token
- you want the most recent training data — it shipped Aug 2026
Choose GPT-5.4
- you want predictable pricing at $2.50/M input and $15.00/M output
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
GLM-5.3 outperforms in 4 benchmarks (DeepSWE 1.1, FrontierSWE, Humanity's Last Exam, Toolathlon), while GPT-5.4 is better at 0 benchmarks.
GLM-5.3 significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GLM-5.3 ($1.40/1M tokens) is 1.8x cheaper than GPT-5.4 ($2.50/1M tokens).
For output processing, GLM-5.3 ($4.40/1M tokens) is 3.4x cheaper than GPT-5.4 ($15.00/1M tokens).
In conclusion, GPT-5.4 is more expensive than GLM-5.3.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 1,000,000 tokens. Both models can generate responses up to 128,000 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.4 supports multimodal inputs, whereas GLM-5.3 does not.
GPT-5.4 can handle both text and other forms of data like images, making it suitable for multimodal applications.
GLM-5.3
GPT-5.4
Release Timeline
When each model was launched
GLM-5.3 was released on 2026-08-14, while GPT-5.4 was released on 2026-03-05.
GLM-5.3 is 5 months newer than GPT-5.4.
Aug 14, 2026
1 weeks ago
5mo newerMar 5, 2026
5 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GLM-5.3 is available from ZAI. GPT-5.4 is available from OpenAI.
GLM-5.3
GPT-5.4
Outputs Comparison
Judge for yourself.
Run your own prompts against GLM-5.3 and GPT-5.4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GLM-5.3 vs GPT-5.4.