Gemini 3.1 Flash Lite Preview is $4.75 cheaper per 1M input tokens (95% lower; 20x difference).
API cost decision in 10 seconds
OpenAI GPT Latest vs Gemini 3.1 Flash Lite Preview
Pick Gemini 3.1 Flash Lite Preview for lower cost; pick OpenAI GPT Latest only if the larger context window matters more.
Page updated:
Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Gemini 3.1 Flash Lite Preview for lower cost; pick OpenAI GPT Latest only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite Preview is estimated at $1 vs $20 for OpenAI GPT Latest, saving $19 (95% lower).
Cost-first pickGemini 3.1 Flash Lite Preview
Context-first pickOpenAI GPT Latest
Sample savings$1995%
10x traffic gap$190
OpenAI GPT Latest has more context, but Gemini 3.1 Flash Lite Preview saves $19 on the standard workload. At 10x that traffic, the same price gap is about $190. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Gemini 3.1 Flash Lite Preview stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | OpenAI GPT Latest | Gemini 3.1 Flash Lite Preview |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Gemini 3.1 Flash Lite Preview | $40 | $2 |
| Balanced workload | 1M input + 1M output | Gemini 3.1 Flash Lite Preview | $35 | $1.75 |
| Output-heavy chatbot | 1M input + 5M output | Gemini 3.1 Flash Lite Preview | $155 | $7.75 |
Gemini 3.1 Flash Lite Preview is $28.5 cheaper per 1M output tokens (95% lower; 20x difference).
OpenAI GPT Latest has 1.42K more context (1x larger).
Gemini 3.1 Flash Lite Preview is $19 cheaper on the standard workload (95% 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 3.1 Flash Lite Preview has the lower input price; Gemini 3.1 Flash Lite Preview has the lower output price; OpenAI GPT Latest offers the larger context window. For the 1M input plus 500K output sample, Gemini 3.1 Flash Lite Preview is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $20 for OpenAI GPT Latest and $1 for Gemini 3.1 Flash Lite Preview.
Choose OpenAI GPT Latest when you care most about larger context window.
Choose Gemini 3.1 Flash Lite Preview when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite Preview is estimated at $1 vs $20 for OpenAI GPT Latest, saving $19 (95% lower).
- Gemini 3.1 Flash Lite Preview is $19 cheaper on the standard workload (95% lower).
- Gemini 3.1 Flash Lite Preview is $4.75 cheaper per 1M input tokens (95% lower; 20x difference).
- Gemini 3.1 Flash Lite Preview is $28.5 cheaper per 1M output tokens (95% lower; 20x difference).
- OpenAI GPT Latest has 1.42K more context (1x larger).
| Feature | OpenAI GPT Latest (OpenAI) | Gemini 3.1 Flash Lite Preview (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $5 | $0.25 |
| Completion Price per 1M tokens | $30 | $1.5 |
| Sample Workload Cost 1M input + 500K output | $20 | $1 |
| Context Window | 1.05M | 1.05M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Gemini 3.1 Flash Lite Preview | On the standard 1M input plus 500K output workload, Gemini 3.1 Flash Lite Preview is estimated at $1 vs $20 for OpenAI GPT Latest, saving $19 (95% lower). |
| High-volume input processing | Gemini 3.1 Flash Lite Preview | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Gemini 3.1 Flash Lite Preview | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | OpenAI GPT Latest | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- gpt-oss-120b (free) can replace OpenAI GPT Latest when lower sample workload cost matters most: $0.
- gpt-oss-20b (free) can replace OpenAI GPT Latest when lower sample workload cost matters most: $0.
- gpt-oss-20b can replace OpenAI GPT Latest when lower sample workload cost matters most: $0.1.
- gpt-oss-120b can replace OpenAI GPT Latest when lower sample workload cost matters most: $0.13.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
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Gemini 3.1 Flash Lite Preview is Google's high-efficiency model optimized for high-volume use cases. It outperforms Gemini 2.5 Flash Lite on overall quality and approaches Gemini 2.5 Flash performance across...