OpenAI: GPT Terra Latest vs Z.ai: GLM 5.3 Flash (batch)
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-11-07.
| OpenAI: GPT Terra Latest | Z.ai: GLM 5.3 Flash (batch) | |
|---|---|---|
| Vendor | ~openai | z-ai |
| Quality Score | 100 | 100 |
| Input Price | $1.00/M | $0.05/M |
| Output Price | $5.00/M | $0.18/M |
| Context Window | 1,050,000 | 1,048,576 |
| Max Output | 128,000 | 131,072 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | ✓ |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | - |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GLM 5.3 Flash (batch) costs $0.095 and GPT Terra Latest costs $2.25, so GLM 5.3 Flash (batch) is about 23.7 times cheaper for the same work.
Both take in a similar amount of text: 1,050,000 and 1,048,576 tokens, about 1,575 and 1,573 pages.
Only GLM 5.3 Flash (batch) offers video input.
Across the 10 tasks where they differ, GLM 5.3 Flash (batch) on 10 (SQL Generation, Code Completion, Code Documentation and others).
GPT Terra Latest was released in September 2026 and GLM 5.3 Flash (batch) in August 2026.
Pick GLM 5.3 Flash (batch) if you need lower cost, video input or the stronger all-round task scores.
Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.
Who wins by task?
| Task | OpenAI: GPT Terra Latest | Z.ai: GLM 5.3 Flash (batch) |
|---|---|---|
| SQL Generation | 133 | 134 |
| Code Completion | 118 | 132 |
| Code Documentation | 130 | 132 |
| Regex Writing | 118 | 120 |
| CSV / Spreadsheet Cleanup | 133 | 134 |
| JSON Extraction | 122 | 132 |
| Bulk Data Labeling | 120 | 129 |
| Long-Document Summarization | 137 | 138 |
| Short-Form Summarization | 114 | 124 |
| Blog Post Writing | 121 | 122 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →