Gemini vs GLM
The short answer. The cheapest Gemini model we track, Gemini 2.5 Flash-Lite, costs $0.400 per million output tokens and an input price that depends on the type of content. The cheapest GLM model, GLM-OCR, costs $0.030 per million output tokens and $0.030 per million input tokens. At the entry level, GLM is 13.3 times cheaper than Gemini on output tokens. Prices read on 11 September 2026 and 18 September 2026.
This page compares what Google and Z.ai charge through their APIs. Every price below carries the day we read it and links to the page it came from. We do not rank quality: we tell you what each model costs, and since when.
At the top of each range
- Among Gemini models that carry a relayed score, the highest on the Artificial Analysis intelligence index is Gemini 3.8 Flash, at 41.2, sold by OpenRouter at $3.75 per million output tokens.
- Among GLM models that carry a relayed score, the highest on the Artificial Analysis intelligence index is GLM 5.3, at 44.9, sold by OpenRouter at $4.40 per million output tokens.
The index is produced by Artificial Analysis and relayed through OpenRouter's catalogue. It is not our measurement; we record it as a level 4 source and show it next to the price we read. A model without a score here has not been scored yet, which is not the same as scoring low.
Every model, side by side
Gemini models
12 standard offers, from the prices Google publishes itself.
| Model | Input | Output | Context | Read on | Source |
|---|---|---|---|---|---|
| Gemini 2.5 Flash-Lite | by content type | $0.400 | 18 September 2026 | ||
| Gemini 3.1 Flash-Lite | by content type | $1.50 | 18 September 2026 | ||
| Gemini 2.5 Flash | by content type | $2.50 | 18 September 2026 | ||
| Gemini 3.5 Flash-Lite | by content type | $2.50 | 18 September 2026 | ||
| Gemini 3 Flash Preview | by content type | $3.00 | 18 September 2026 | ||
| Gemini 3.6 Flash | $0.750 | $3.75 | 18 September 2026 | ||
| Gemini 3.7 Flash | $0.750 | $3.75 | 18 September 2026 | ||
| Gemini 3.8 Flash | $0.750 | $3.75 | 18 September 2026 | ||
| Gemini Robotics ER 1.6 Preview | by content type | $5.00 | 11 September 2026 | ||
| Gemini Robotics ER 2 Preview | by content type | $5.00 | 17 September 2026 | ||
| Gemini Robotics ER 2 Streaming Preview | by content type | $5.00 | 17 September 2026 | ||
| Gemini 3.5 Flash | $1.50 | $9.00 | 18 September 2026 |
GLM models
17 standard offers, from the prices Z.ai publishes itself.
| Model | Input | Output | Context | Read on | Source |
|---|---|---|---|---|---|
| GLM-OCR | $0.030 | $0.030 | 11 September 2026 | Z.ai | |
| GLM-4-32B-0414-128K | $0.100 | $0.100 | 11 September 2026 | Z.ai | |
| GLM-4.6V-FlashX | $0.040 | $0.400 | 11 September 2026 | Z.ai | |
| GLM-4.7-FlashX | $0.070 | $0.400 | 11 September 2026 | Z.ai | |
| GLM-5.3-Flash | $0.150 | $0.500 | 18 September 2026 | Z.ai | |
| GLM-4.6V | $0.300 | $0.900 | 18 September 2026 | Z.ai | |
| GLM-4.5-Air | $0.200 | $1.10 | 18 September 2026 | Z.ai | |
| GLM-4.5V | $0.600 | $1.80 | 18 September 2026 | Z.ai | |
| GLM-4.5 | $0.600 | $2.20 | 16 September 2026 | Z.ai | |
| GLM-4.6 | $0.600 | $2.20 | 18 September 2026 | Z.ai | |
| GLM-4.7 | $0.600 | $2.20 | 11 September 2026 | Z.ai | |
| GLM-5 | $1.00 | $3.20 | 18 September 2026 | Z.ai | |
| GLM-5.1 | $1.40 | $4.40 | 15 September 2026 | Z.ai | |
| GLM-5.2 | $1.40 | $4.40 | 18 September 2026 | Z.ai | |
| GLM-5.3 | $1.40 | $4.40 | 18 September 2026 | Z.ai | |
| GLM-4.5-AirX | $1.10 | $4.50 | 11 September 2026 | Z.ai | |
| GLM-4.5-X | $2.20 | $8.90 | 11 September 2026 | Z.ai |
How these prices have moved
We hold dated captures of these models' prices back to 9 May 2025. We did not observe these values ourselves: they were recovered from public captures of OpenRouter's catalogue, and each links to its capture so you can check it without trusting us. Largest moves on output price:
| Model | Before | After | Change | Captured |
|---|---|---|---|---|
| Z.ai: GLM 4.5 | $0.200 | $0.800064 | +300% | 12 August 2025 |
| Z.ai: GLM 4.5 Air | $0.220 | $0.850 | +286% | 19 February 2026 |
| Z.ai: GLM 5.2 | $0.8624 | $2.9788 | +245% | 21 July 2026 |
| Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) | $1.50 | $3.00 | +100% | 6 March 2026 |
| Google: Gemini 3.7 Flash | $1.875 | $3.75 | +100% | 29 August 2026 |
| Z.ai: GLM 4.5 Air | $0.860 | $0.000 | -100% | 7 October 2025 |
Questions
Which is cheaper, Gemini or GLM?
The cheapest Gemini model we track, Gemini 2.5 Flash-Lite, costs $0.400 per million output tokens and an input price that depends on the type of content. The cheapest GLM model, GLM-OCR, costs $0.030 per million output tokens and $0.030 per million input tokens. At the entry level, GLM is 13.3 times cheaper than Gemini on output tokens. Prices read on 11 September 2026 and 18 September 2026.
What is the cheapest Gemini model?
Gemini 2.5 Flash-Lite, at $0.400 per million output tokens, read on 18 September 2026.
What is the cheapest GLM model?
GLM-OCR, at $0.030 per million output tokens, read on 11 September 2026.
Where do these prices come from?
From the price lists Google and Z.ai publish, read by our collectors. No figure on this page was produced by a language model.