Gemini 3.5 Flash Lite is $0.7 cheaper per 1M input tokens (70% lower; 3.33x difference).
API cost decision in 10 seconds
Gemini 3.5 Flash Lite vs Grok Build 0.1
Pick Gemini 3.5 Flash Lite when budget and context both matter.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Gemini 3.5 Flash Lite when budget and context both matter.
On the standard 1M input plus 500K output workload, Gemini 3.5 Flash Lite is estimated at $1.55 vs $2 for Grok Build 0.1, saving $0.45 (22.5% lower).
Cost-first pickGemini 3.5 Flash Lite
Context-first pickGemini 3.5 Flash Lite
Sample savings$0.4522.5%
10x traffic gap$4.5
Gemini 3.5 Flash Lite is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $4.5. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors Gemini 3.5 Flash Lite, balanced workload favors Gemini 3.5 Flash Lite, and output-heavy chatbot favors Grok Build 0.1.
| Workload shape | Token mix | Better pick | Gemini 3.5 Flash Lite | Grok Build 0.1 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Gemini 3.5 Flash Lite | $2.75 | $6 |
| Balanced workload | 1M input + 1M output | Gemini 3.5 Flash Lite | $2.8 | $3 |
| Output-heavy chatbot | 1M input + 5M output | Grok Build 0.1 | $12.8 | $11 |
Grok Build 0.1 is $0.5 cheaper per 1M output tokens (20% lower; 1.25x difference).
Gemini 3.5 Flash Lite has 792.58K more context (4.1x larger).
Gemini 3.5 Flash Lite is $0.45 cheaper on the standard workload (22.5% 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
Gemini 3.5 Flash Lite has the lower input price; Grok Build 0.1 has the lower output price; Gemini 3.5 Flash Lite offers the larger context window. For the 1M input plus 500K output sample, Gemini 3.5 Flash Lite is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $1.55 for Gemini 3.5 Flash Lite and $2 for Grok Build 0.1.
Choose Gemini 3.5 Flash Lite when you care most about lower input-token price, and larger context window.
Choose Grok Build 0.1 when you care most about lower output-token price.
- On the standard 1M input plus 500K output workload, Gemini 3.5 Flash Lite is estimated at $1.55 vs $2 for Grok Build 0.1, saving $0.45 (22.5% lower).
- Gemini 3.5 Flash Lite is $0.45 cheaper on the standard workload (22.5% lower).
- Gemini 3.5 Flash Lite is $0.7 cheaper per 1M input tokens (70% lower; 3.33x difference).
- Grok Build 0.1 is $0.5 cheaper per 1M output tokens (20% lower; 1.25x difference).
- Gemini 3.5 Flash Lite has 792.58K more context (4.1x larger).
| Feature | Gemini 3.5 Flash Lite (Google) | Grok Build 0.1 (SpaceXAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.3 | $1 |
| Completion Price per 1M tokens | $2.5 | $2 |
| Sample Workload Cost 1M input + 500K output | $1.55 | $2 |
| Context Window | 1.05M | 256K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Gemini 3.5 Flash Lite | On the standard 1M input plus 500K output workload, Gemini 3.5 Flash Lite is estimated at $1.55 vs $2 for Grok Build 0.1, saving $0.45 (22.5% lower). |
| High-volume input processing | Gemini 3.5 Flash Lite | 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 3.5 Flash Lite | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Gemma 4 26B A4B (free) can replace Gemini 3.5 Flash Lite when lower sample workload cost matters most: $0.
- Gemma 4 31B (free) can replace Gemini 3.5 Flash Lite when lower sample workload cost matters most: $0.
- Lyria 3 Pro Preview can replace Gemini 3.5 Flash Lite when lower sample workload cost matters most: $0.
- Lyria 3 Clip Preview can replace Gemini 3.5 Flash Lite when lower sample workload cost matters most: $0.
- 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.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.17 sample workload cost.
- DeepSeek V4 Flash Latest offers 1.31M context with $0.11 sample workload cost.
- DeepSeek V4 Flash 0731 · DeepSeek · #1
- MiMo-V2.5 · Xiaomi · #2
- Hy3 · Tencent · #3
- Ox Alpha · stealth · #4
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Open SpaceXAI modelsGemini 3.5 Flash Lite is a high-efficiency model from Google with upgraded agentic capabilities. It is suited for subagents that execute focused tasks within complex, multi-agent workflows.
Grok Build 0.1 is SpaceXAI’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...