Grok Latest is $1.2 cheaper per 1M input tokens (42.9% lower; 1.75x difference).
API cost decision in 10 seconds
NewGLM 5.3 Prime vs Grok Latest
Pick Grok Latest for lower cost; pick GLM 5.3 Prime 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 Grok Latest for lower cost; pick GLM 5.3 Prime only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Grok Latest is estimated at $4 vs $7.2 for GLM 5.3 Prime, saving $3.2 (44.4% lower).
Cost-first pickGrok Latest
Context-first pickGLM 5.3 Prime
Sample savings$3.244.4%
10x traffic gap$32
GLM 5.3 Prime has more context, but Grok Latest saves $3.2 on the standard workload. At 10x that traffic, the same price gap is about $32. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Grok Latest stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | GLM 5.3 Prime | Grok Latest |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Grok Latest | $18.4 | $10.4 |
| Balanced workload | 1M input + 1M output | Grok Latest | $11.6 | $6.4 |
| Output-heavy chatbot | 1M input + 5M output | Grok Latest | $46.8 | $25.6 |
Grok Latest is $4 cheaper per 1M output tokens (45.5% lower; 1.83x difference).
GLM 5.3 Prime has 500K more context (2x larger).
Grok Latest is $3.2 cheaper on the standard workload (44.4% 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
Grok Latest has the lower input price; Grok Latest has the lower output price; GLM 5.3 Prime offers the larger context window. For the 1M input plus 500K output sample, Grok Latest is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $7.2 for GLM 5.3 Prime and $4 for Grok Latest.
Choose GLM 5.3 Prime when you care most about larger context window.
Choose Grok Latest when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Grok Latest is estimated at $4 vs $7.2 for GLM 5.3 Prime, saving $3.2 (44.4% lower).
- Grok Latest is $3.2 cheaper on the standard workload (44.4% lower).
- Grok Latest is $1.2 cheaper per 1M input tokens (42.9% lower; 1.75x difference).
- Grok Latest is $4 cheaper per 1M output tokens (45.5% lower; 1.83x difference).
- GLM 5.3 Prime has 500K more context (2x larger).
| Feature | NewGLM 5.3 Prime (Z.ai) | Grok Latest (xAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $2.8 | $1.6 |
| Completion Price per 1M tokens | $8.8 | $4.8 |
| Sample Workload Cost 1M input + 500K output | $7.2 | $4 |
| Context Window | 1M | 500K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Grok Latest | On the standard 1M input plus 500K output workload, Grok Latest is estimated at $4 vs $7.2 for GLM 5.3 Prime, saving $3.2 (44.4% lower). |
| High-volume input processing | Grok Latest | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Grok Latest | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GLM 5.3 Prime | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- GLM 5.2 (free) can replace GLM 5.3 Prime when lower sample workload cost matters most: $0.
- GLM 4.5 Air (free) can replace GLM 5.3 Prime when lower sample workload cost matters most: $0.
- GLM 4 32B can replace GLM 5.3 Prime when lower sample workload cost matters most: $0.15.
- GLM 5.3 Flash (batch) can replace GLM 5.3 Prime when lower sample workload cost matters most: $0.16.
- Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- GLM 5.3 Flash offers 1.31M context with $0.4 sample workload cost.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.36 sample workload cost.
- MiMo-V2.6-Pro · Xiaomi · #1
- GLM 5.3 Flash · Z.ai · #2
- DeepSeek V4.1 Flash · DeepSeek · #3
- Hy4 preview · Tencent · #4
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Open xAI modelsGLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token...
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