GLM 5.3 Flash vs GPT-6.1 Terra
aka GLM 5.3 Flash vs OpenAI GPT-6.1 Terra
- CheaperGLM 5.3 Flash1/1 postsmedian gap ~3.4×
- FasterGPT-6.1 Terra1/1 postsmedian gap ~5.7×
As stated in each post, not a controlled benchmark.
Posts
1
Same prompt, separate runs
5Not a controlled comparison: prompts, tools and time differ.
About this matchup
GLM 5.3 Flash vs GPT-6.1 Terra in real side-by-side tests: 1 post from X where both got the same prompt; 1 post reports cost or time. Judge coding ability from the actual outputs.
GLM 5.3 Flash vs GPT-6.1 Terra: which is better for coding?
Which is better for coding, GLM 5.3 Flash or GPT-6.1 Terra?
None of the 1 post here names one of the two as the better result, so judge the outputs above for the work you care about.
Which is cheaper, GLM 5.3 Flash or GPT-6.1 Terra?
1 post states a cost for both: GLM 5.3 Flash was cheaper in it (~3.4× cheaper). These are the costs the posts state for each run, not list prices.
Which is faster, GLM 5.3 Flash or GPT-6.1 Terra?
1 post states a time for both: GPT-6.1 Terra was faster in it (~5.7× faster). Times are as stated in each post; tools and settings differ between posts.
Summary
GLM 5.3 Flash and GPT-6.1 Terra appear together in 1 post on X: combine harvester challenge, three scored (@LatentOperatorX). It is part of larger lineups with other models. In @LatentOperatorX's combine harvester challenge, three scored, GLM 5.3 Flash was cheaper ($0.09 vs $0.31) and GPT-6.1 Terra was faster (6.9 min vs 39.5 min), as reported in the post.
What each post reports
| Post | Model | Time | Cost | Tokens | Post |
|---|---|---|---|---|---|
| Combine harvester challenge, three scored@LatentOperatorX | GPT-6.1 Terra | 6.9 min | $0.31 | — | X post |
| Combine harvester challenge, three scored@LatentOperatorX | GLM 5.3 Flash | 39.5 min | $0.09 | — | X post |
Only numbers stated in each post. “—” means the post doesn’t say.
Quick facts
| Model | Vendor | Released | Input $/1M tokens | Output $/1M tokens | Context (tokens) | Official links |
|---|---|---|---|---|---|---|
| GLM 5.3 Flash | Zhipu AI (Z.ai) | |||||
| GPT-6.1 Terra | OpenAI | 2026-10-26 | Announcement |
From the vendors’ official pages, checked 2026-10-26. Standard API list prices; each value links its source and a blank cell could not be verified. The archive’s own numbers above are what each post states.
Models
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