Z.ai: GLM 5.3 Flash vs Thinking Machines: Inkling
Side-by-side comparison of specs, pricing, benchmark scores, and task rankings. Updated 2026-10-11.
| Z.ai: GLM 5.3 Flash | Thinking Machines: Inkling | |
|---|---|---|
| Vendor | z-ai | thinkingmachines |
| Quality Score | 100 | 100 |
| Benchmark Score | 70.6 | 39.4 |
| Input Price | $0.15/M | $1.00/M |
| Output Price | $0.50/M | $4.05/M |
| Context Window | 1,048,576 | 524,288 |
| Max Output | 943,717 | 471,859 |
| Tool Calling | ✓ | ✓ |
| Structured Output | ✓ | - |
| Reasoning Mode | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio | - | ✓ |
| Benchmark Scores | ||
| ai_index | 69.0 | 41.2 |
The verdict
For a sample job of 1 million input tokens and 250,000 output tokens, GLM 5.3 Flash costs $0.28 and Inkling costs $2.01, so GLM 5.3 Flash is about 7.3 times cheaper for the same work.
GLM 5.3 Flash reads up to 1,048,576 tokens at once, roughly 1,573 pages of text, against about 786 pages for Inkling.
Only GLM 5.3 Flash offers structured output and video input; only Inkling offers audio input.
On our blended benchmark score GLM 5.3 Flash leads 70.6 to 39.4.
Across the 20 tasks where they differ, GLM 5.3 Flash scores higher on 20 (SQL Generation, Code Review, Code Completion and others).
GLM 5.3 Flash was released in August 2026 and Inkling in July 2026.
Pick GLM 5.3 Flash if you need lower cost, long documents, structured output, video input, benchmark performance or the stronger all-round task scores; pick Inkling if you need audio input.
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 | Z.ai: GLM 5.3 Flash | Thinking Machines: Inkling |
|---|---|---|
| SQL Generation | 142 | 130 |
| Code Review | 145 | 135 |
| Code Completion | 133 | 119 |
| Code Refactoring | 147 | 138 |
| Bug Fixing | 149 | 143 |
| Unit Test Generation | 132 | 120 |
| Code Documentation | 138 | 134 |
| Regex Writing | 126 | 123 |
| CI/CD Pipelines | 128 | 120 |
| Frontend Component Design | 130 | 122 |
| Data Analysis | 134 | 126 |
| CSV / Spreadsheet Cleanup | 136 | 123 |
| ETL Scripting | 137 | 129 |
| JSON Extraction | 131 | 111 |
| Bulk Data Labeling | 129 | 116 |
| OCR / Document Parsing | 134 | 125 |
| Table Extraction from PDFs | 134 | 125 |
| Long-Document Summarization | 149 | 144 |
| Short-Form Summarization | 127 | 117 |
| Blog Post Writing | 130 | 126 |
Scores reflect capability match + benchmark data + pricing for each task. Methodology →