Grok Build 0.1 is $0.25 cheaper per 1M input tokens (20% lower; 1.25x difference).
API cost decision in 10 seconds
Gemini 2.5 Pro vs NewGrok Build 0.1
Pick Grok Build 0.1 for lower cost; pick Gemini 2.5 Pro 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 Build 0.1 for lower cost; pick Gemini 2.5 Pro only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Grok Build 0.1 is estimated at $2 vs $6.25 for Gemini 2.5 Pro, saving $4.25 (68% lower).
Cost-first pickGrok Build 0.1
Context-first pickGemini 2.5 Pro
Sample savings$4.2568%
10x traffic gap$42.5
Gemini 2.5 Pro has more context, but Grok Build 0.1 saves $4.25 on the standard workload. At 10x that traffic, the same price gap is about $42.5. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Grok Build 0.1 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Gemini 2.5 Pro | Grok Build 0.1 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Grok Build 0.1 | $11.25 | $6 |
| Balanced workload | 1M input + 1M output | Grok Build 0.1 | $11.25 | $3 |
| Output-heavy chatbot | 1M input + 5M output | Grok Build 0.1 | $51.25 | $11 |
Grok Build 0.1 is $8 cheaper per 1M output tokens (80% lower; 5x difference).
Gemini 2.5 Pro has 792.58K more context (4.1x larger).
Grok Build 0.1 is $4.25 cheaper on the standard workload (68% 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 Build 0.1 has the lower input price; Grok Build 0.1 has the lower output price; Gemini 2.5 Pro offers the larger context window. For the 1M input plus 500K output sample, Grok Build 0.1 is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $6.25 for Gemini 2.5 Pro and $2 for Grok Build 0.1.
Choose Gemini 2.5 Pro when you care most about larger context window.
Choose Grok Build 0.1 when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Grok Build 0.1 is estimated at $2 vs $6.25 for Gemini 2.5 Pro, saving $4.25 (68% lower).
- Grok Build 0.1 is $4.25 cheaper on the standard workload (68% lower).
- Grok Build 0.1 is $0.25 cheaper per 1M input tokens (20% lower; 1.25x difference).
- Grok Build 0.1 is $8 cheaper per 1M output tokens (80% lower; 5x difference).
- Gemini 2.5 Pro has 792.58K more context (4.1x larger).
| Feature | Gemini 2.5 Pro (Google) | NewGrok Build 0.1 (xAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $1.25 | $1 |
| Completion Price per 1M tokens | $10 | $2 |
| Sample Workload Cost 1M input + 500K output | $6.25 | $2 |
| Context Window | 1.05M | 256K |
| Release Date | ||
| Popularity | #55 | #119 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Grok Build 0.1 | On the standard 1M input plus 500K output workload, Grok Build 0.1 is estimated at $2 vs $6.25 for Gemini 2.5 Pro, saving $4.25 (68% lower). |
| High-volume input processing | Grok Build 0.1 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Grok Build 0.1 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Gemini 2.5 Pro | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
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- Gemma 4 26B A4B (free) can replace Gemini 2.5 Pro when lower sample workload cost matters most: $0.
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- 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.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
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Open xAI modelsGemini 2.5 Pro is Google’s state-of-the-art AI model designed for advanced reasoning, coding, mathematics, and scientific tasks. It employs “thinking” capabilities, enabling it to reason through responses with enhanced accuracy...
Grok Build 0.1 is xAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized for interactive coding...