GLM-5.3-FlashX-Legal vs GPT-6.1 Terra
GLM-5.3-FlashX-Legal and GPT-6.1 Terra are closely matched at 41.5 and 47.6 on the LLM Stats Score. GLM-5.3-FlashX-Legal is 3.4x cheaper per token.
Zhipu AI · OpenAI · Updated for 2026
Which is better?
GLM-5.3-FlashX-Legal and GPT-6.1 Terra are closely matched on the overall LLM Stats Score at 41.5 and 47.6.
On price, GLM-5.3-FlashX-Legal is roughly 3.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-6.1 Terra also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GLM-5.3-FlashX-Legal
- cost matters — it's about 3.4x cheaper per token
Choose GPT-6.1 Terra
- you process long inputs — it offers a 1,050,000 token context window
- you want the most recent training data — it shipped Oct 2026
At a glance
The differences that matter most.
Individual benchmarks
1 reported for GLM-5.3-FlashX-Legal · 9 for GPT-6.1 Terra
GLM-5.3-FlashX-Legal and GPT-6.1 Terradon'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
Pricing Analysis
Price comparison per million tokens
For input processing, GLM-5.3-FlashX-Legal ($0.37/1M tokens) is 2.7x cheaper than GPT-6.1 Terra ($1.00/1M tokens).
For output processing, GLM-5.3-FlashX-Legal ($1.25/1M tokens) is 4.0x cheaper than GPT-6.1 Terra ($5.00/1M tokens).
In conclusion, GPT-6.1 Terra is more expensive than GLM-5.3-FlashX-Legal.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-6.1 Terra accepts 1,050,000 input tokens compared to GLM-5.3-FlashX-Legal's 1,000,000 tokens. GLM-5.3-FlashX-Legal can generate longer responses up to 131,072 tokens, while GPT-6.1 Terra is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both GLM-5.3-FlashX-Legal and GPT-6.1 Terra support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GLM-5.3-FlashX-Legal
GPT-6.1 Terra
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GLM-5.3-FlashX-Legal was released on 2026-10-12, while GPT-6.1 Terra was released on 2026-10-26.
GPT-6.1 Terra is 0 month newer than GLM-5.3-FlashX-Legal.
Oct 12, 2026
3 weeks ago
Oct 26, 2026
1 weeks ago
2w newerKnowledge Cutoff
When training data ends
GPT-6.1 Terra has a documented knowledge cutoff of 2026-06-01, while GLM-5.3-FlashX-Legal's cutoff date is not specified.
We can confirm GPT-6.1 Terra's training data extends to 2026-06-01, but cannot make a direct comparison without GLM-5.3-FlashX-Legal's cutoff date.
—
Jun 2026
Provider Availability
GLM-5.3-FlashX-Legal is available from ZAI. GPT-6.1 Terra is available from OpenAI.
GLM-5.3-FlashX-Legal
GPT-6.1 Terra
Outputs Comparison
Judge for yourself.
Run your own prompts against GLM-5.3-FlashX-Legal and GPT-6.1 Terra side-by-side, then vote on the output you prefer.
FAQ
Common questions about GLM-5.3-FlashX-Legal vs GPT-6.1 Terra.