GLM-5.3 vs o1-mini
Comparing GLM-5.3 and o1-mini across benchmarks, pricing, and capabilities.
Zhipu AI · OpenAI · Updated for 2026
Which is better?
GLM-5.3 and o1-mini trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.
On price, GLM-5.3 is roughly 2.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GLM-5.3 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current benchmark, pricing, and model metadata for 2026.
Choose GLM-5.3
- cost matters — it's about 2.4x cheaper per token
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Aug 2026
Choose o1-mini
- you want predictable pricing at $3.00/M input and $12.00/M output
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
GLM-5.3 and o1-minidon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
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 2.1x cheaper than o1-mini ($3.00/1M tokens).
For output processing, GLM-5.3 ($4.40/1M tokens) is 2.7x cheaper than o1-mini ($12.00/1M tokens).
In conclusion, o1-mini 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
GLM-5.3 accepts 1,000,000 input tokens compared to o1-mini's 128,000 tokens. GLM-5.3 can generate longer responses up to 128,000 tokens, while o1-mini is limited to 65,536 tokens.
Release Timeline
When each model was launched
GLM-5.3 was released on 2026-08-14, while o1-mini was released on 2024-09-12.
GLM-5.3 is 23 months newer than o1-mini.
Aug 14, 2026
1 weeks ago
1.9yr newerSep 12, 2024
1.9 years 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. o1-mini is available from OpenAI, Azure.
GLM-5.3
o1-mini
Outputs Comparison
Judge for yourself.
Run your own prompts against GLM-5.3 and o1-mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about GLM-5.3 vs o1-mini.