GLM-5.3-Flash vs GPT-6 Luna
Alibaba Cloud Model Studio · Zhipu (direct) vs OpenAI · prices and specs, line by line
GLM-5.3-Flash (Alibaba Cloud Model Studio · Zhipu (direct)) vs GPT-6 Luna (OpenAI), side by side: input/output/cache-hit prices, time-based pricing, context window, modalities and a fixed-assumption monthly cost. Green marks the better row.
| Dimension | GLM-5.3-Flash | GPT-6 Luna |
|---|---|---|
| Vendor / channel | Alibaba Cloud Model Studio · Zhipu (direct) | OpenAI |
| Context window | 1024K | 1050K |
| Modalities | Text, Image understanding, Video understanding | Text, Image understanding |
| Features | Lightweight, low cost, Thinking-only mode | Low cost at scale, Efficient, lightweight |
| Input (cache miss) | ¥0.8 | Input ≤272K $0.1 Input >272K (long context) not published |
| Output | ¥2.8 | Input ≤272K $0.5 Input >272K (long context) not published |
| Cache hit | ¥0.23 | Input ≤272K $0.01 Input >272K (long context) not published |
| Time-based pricing | ||
| Est. monthly cost* | ¥10.49 |
$1.64 |
| Price source | Alibaba Cloud Model Studio — GLM-5.3-Flash model page | OpenAI API pricing |
| Verified | 2026-10-28 | 2026-10-28 |
* Fixed assumptions for the example monthly cost: 100 calls/day · 2,000 input / 800 output tokens per call · off-peak rates · 30% cache hit rate · 30-day month — the same formula and defaults as the cost calculator. USD models are converted to CNY at the reference rate for comparison (see summary). Costs within display precision are marked tied; neither side is favored.
Comparison summary (fixed usage basis)
- Estimated monthly cost: GLM-5.3-Flash ¥10.49 vs GPT-6 Luna ¥11.00 on a common CNY basis (list prices ¥10.49 / $1.64) — at this fixed usage, GLM-5.3-Flash is cheaper by ¥0.51/month.
- Cost ratio: under this basis, GPT-6 Luna costs about 1.0× GLM-5.3-Flash (GLM-5.3-Flash is ~5% cheaper). The ratio holds only at the current list prices, reference rate and fixed usage assumptions; it says nothing about capability, output quality or overall value.
- Input unit price (off-peak / single-price basis): list prices ¥0.8 vs $0.1; after conversion GPT-6 Luna is lower (by ≈ ¥0.13/1M tokens).
- Output unit price (off-peak / single-price basis): list prices ¥2.8 vs $0.5; after conversion GLM-5.3-Flash is lower (by ≈ ¥0.56/1M tokens).
- Cache-hit price (off-peak basis): GLM-5.3-Flash ¥0.23; GPT-6 Luna $0.01.
- Currencies: GLM-5.3-Flash is billed in CNY, GPT-6 Luna in USD; conversion uses the CFETS central parity rate (see above) and is indicative only.
- Context window: GLM-5.3-Flash 1024K vs GPT-6 Luna 1050K — GPT-6 Luna is 1.0× GLM-5.3-Flash.
- Modalities: GLM-5.3-Flash=Text, Image understanding, Video understanding; GPT-6 Luna=Text, Image understanding (GLM-5.3-Flash adds Video understanding).
- Price sources: Alibaba Cloud Model Studio — GLM-5.3-Flash model page (verified 2026-10-28), OpenAI API pricing (verified 2026-10-28); unit: official list price per 1M tokens (GLM-5.3-Flash in CNY, GPT-6 Luna in USD; cross-currency figures converted to CNY as noted above).
These are computations from published list prices under fixed call volume, token usage, cache assumptions and billing rules. They are not rankings of capability, output quality or overall value, and do not constitute purchase advice.