GLM-5.2 vs Gemini 3.1 Pro
Side-by-side API pricing comparison · Z.AI vs Google
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GLM-5.2 is 141.4% cheaper on blended cost ($2.90 vs $7.00/Mtok)
GLM-5.2
by Z.AI
Current flagship Open weightsInput
$1.40/Mtok
Output
$4.40/Mtok
✓ Cheaper
| Blended avg | $2.90/Mtok |
|---|---|
| Cached input | $0.260/Mtok |
| Context | 128K tokens |
| Modality | text |
| Parameters | Proprietary |
| Released | Jan 1, 2026 |
Gemini 3.1 Pro
by Google
Current flagshipInput
$2.00/Mtok
Output
$12.00/Mtok
| Blended avg | $7.00/Mtok |
|---|---|
| Context | 2M tokens |
| Modality | text, image, audio, video |
| Parameters | Proprietary |
| Released | Nov 1, 2025 |
Cost at scale — 1M tokens (50/50 input/output)
| Volume | GLM-5.2 | Gemini 3.1 Pro | Savings |
|---|---|---|---|
| 1M tokens | $2.9 | $7 | $4.1 (58.6%) |
| 10M tokens | $29 | $70 | $41 (58.6%) |
| 100M tokens | $290 | $700 | $410 (58.6%) |
| 1000M tokens | $2900 | $7000 | $4100 (58.6%) |
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Get started with Z.AI's API — GLM-5.2 costs $2.90/Mtok blended.
Summary
GLM-5.2 by Z.AI costs $1.40/Mtok input and $4.40/Mtok output, with a 128K-token context window. It supports text input.
Gemini 3.1 Pro by Google costs $2.00/Mtok input and $12.00/Mtok output, with a 2M-token context window. It supports text, image, audio, video input.
On a blended cost basis, GLM-5.2 is 141.4% cheaper than Gemini 3.1 Pro.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.