GLM 4.7 Flash is $1.94 cheaper per 1M input tokens (97% lower; 33.3x difference).
API cost decision in 10 seconds
GLM 4.7 Flash vs Gemini 3.1 Pro Preview Custom Tools
Pick GLM 4.7 Flash for lower cost; pick Gemini 3.1 Pro Preview Custom Tools only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick GLM 4.7 Flash for lower cost; pick Gemini 3.1 Pro Preview Custom Tools only if the larger context window matters more.
On the standard 1M input plus 500K output workload, GLM 4.7 Flash is estimated at $0.26 vs $8 for Gemini 3.1 Pro Preview Custom Tools, saving $7.74 (96.8% lower).
Cost-first pickGLM 4.7 Flash
Context-first pickGemini 3.1 Pro Preview Custom Tools
Sample savings$7.7496.8%
10x traffic gap$77.4
Gemini 3.1 Pro Preview Custom Tools has more context, but GLM 4.7 Flash saves $7.74 on the standard workload. At 10x that traffic, the same price gap is about $77.4. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
GLM 4.7 Flash stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | GLM 4.7 Flash | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | GLM 4.7 Flash | $0.5 | $16 |
| Balanced workload | 1M input + 1M output | GLM 4.7 Flash | $0.46 | $14 |
| Output-heavy chatbot | 1M input + 5M output | GLM 4.7 Flash | $2.06 | $62 |
GLM 4.7 Flash is $11.6 cheaper per 1M output tokens (96.7% lower; 30x difference).
Gemini 3.1 Pro Preview Custom Tools has 846K more context (5.17x larger).
GLM 4.7 Flash is $7.74 cheaper on the standard workload (96.8% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
GLM 4.7 Flash has the lower input price; GLM 4.7 Flash has the lower output price; Gemini 3.1 Pro Preview Custom Tools offers the larger context window. For the 1M input plus 500K output sample, GLM 4.7 Flash is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.26 for GLM 4.7 Flash and $8 for Gemini 3.1 Pro Preview Custom Tools.
Choose GLM 4.7 Flash when you care most about lower input-token price, and lower output-token price.
Choose Gemini 3.1 Pro Preview Custom Tools when you care most about larger context window.
- On the standard 1M input plus 500K output workload, GLM 4.7 Flash is estimated at $0.26 vs $8 for Gemini 3.1 Pro Preview Custom Tools, saving $7.74 (96.8% lower).
- GLM 4.7 Flash is $7.74 cheaper on the standard workload (96.8% lower).
- GLM 4.7 Flash is $1.94 cheaper per 1M input tokens (97% lower; 33.3x difference).
- GLM 4.7 Flash is $11.6 cheaper per 1M output tokens (96.7% lower; 30x difference).
- Gemini 3.1 Pro Preview Custom Tools has 846K more context (5.17x larger).
| Feature | GLM 4.7 Flash (Z.ai) | Gemini 3.1 Pro Preview Custom Tools (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.06 | $2 |
| Completion Price per 1M tokens | $0.4 | $12 |
| Sample Workload Cost 1M input + 500K output | $0.26 | $8 |
| Context Window | 202.75K | 1.05M |
| Release Date | ||
| Popularity | #58 | #132 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | GLM 4.7 Flash | On the standard 1M input plus 500K output workload, GLM 4.7 Flash is estimated at $0.26 vs $8 for Gemini 3.1 Pro Preview Custom Tools, saving $7.74 (96.8% lower). |
| High-volume input processing | GLM 4.7 Flash | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | GLM 4.7 Flash | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Gemini 3.1 Pro Preview Custom Tools | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- GLM 4.5 Air (free) can replace GLM 4.7 Flash when lower sample workload cost matters most: $0.
- GLM 4 32B can replace GLM 4.7 Flash when lower sample workload cost matters most: $0.15.
- Gemma 4 31B (free) can replace Gemini 3.1 Pro Preview Custom Tools when lower sample workload cost matters most: $0.
- Gemma 4 26B A4B (free) can replace Gemini 3.1 Pro Preview Custom Tools when lower sample workload cost matters most: $0.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
- GPT-5.4 offers 1.05M context with $10 sample workload cost.
- DeepSeek V4 Flash · DeepSeek · #1
- Hy3 preview · Tencent · #2
- Claude Opus 4.7 · Anthropic · #3
- Claude Sonnet 4.6 · Anthropic · #4
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