Google Gemini Flash Latest is $0.5 cheaper per 1M input tokens (25% lower; 1.33x difference).
API cost decision in 10 seconds
Google Gemini Flash Latest vs Gemini 3.1 Pro Preview
Pick Google Gemini Flash Latest when budget is the priority.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Google Gemini Flash Latest when budget is the priority.
On the standard 1M input plus 500K output workload, Google Gemini Flash Latest is estimated at $6 vs $8 for Gemini 3.1 Pro Preview, saving $2 (25% lower).
Cost-first pickGoogle Gemini Flash Latest
Context-first pickBoth models
Sample savings$225%
10x traffic gap$20
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $20. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Google Gemini Flash Latest stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Google Gemini Flash Latest | Gemini 3.1 Pro Preview |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Google Gemini Flash Latest | $12 | $16 |
| Balanced workload | 1M input + 1M output | Google Gemini Flash Latest | $10.5 | $14 |
| Output-heavy chatbot | 1M input + 5M output | Google Gemini Flash Latest | $46.5 | $62 |
Google Gemini Flash Latest is $3 cheaper per 1M output tokens (25% lower; 1.33x difference).
Both models report the same context window at 1.05M tokens.
Google Gemini Flash Latest is $2 cheaper on the standard workload (25% 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
Google Gemini Flash Latest has the lower input price; Google Gemini Flash Latest has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, Google Gemini Flash Latest is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $6 for Google Gemini Flash Latest and $8 for Gemini 3.1 Pro Preview.
Choose Google Gemini Flash Latest when you care most about lower input-token price, and lower output-token price.
Choose Gemini 3.1 Pro Preview when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
- On the standard 1M input plus 500K output workload, Google Gemini Flash Latest is estimated at $6 vs $8 for Gemini 3.1 Pro Preview, saving $2 (25% lower).
- Google Gemini Flash Latest is $2 cheaper on the standard workload (25% lower).
- Google Gemini Flash Latest is $0.5 cheaper per 1M input tokens (25% lower; 1.33x difference).
- Google Gemini Flash Latest is $3 cheaper per 1M output tokens (25% lower; 1.33x difference).
- Both models report the same context window at 1.05M tokens.
| Feature | Google Gemini Flash Latest (Google) | Gemini 3.1 Pro Preview (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $1.5 | $2 |
| Completion Price per 1M tokens | $9 | $12 |
| Sample Workload Cost 1M input + 500K output | $6 | $8 |
| Context Window | 1.05M | 1.05M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Google Gemini Flash Latest | On the standard 1M input plus 500K output workload, Google Gemini Flash Latest is estimated at $6 vs $8 for Gemini 3.1 Pro Preview, saving $2 (25% lower). |
| High-volume input processing | Google Gemini Flash Latest | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Google Gemini Flash Latest | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Gemma 4 26B A4B (free) can replace Google Gemini Flash Latest when lower sample workload cost matters most: $0.
- Gemma 4 31B (free) can replace Google Gemini Flash Latest when lower sample workload cost matters most: $0.
- Lyria 3 Pro Preview can replace Google Gemini Flash Latest when lower sample workload cost matters most: $0.
- Lyria 3 Clip Preview can replace Google Gemini Flash Latest when lower sample workload cost matters most: $0.
- 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.
- GPT-5.4 offers 1.05M context with $10 sample workload cost.
- No popular competitor is currently available.
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsGoogle catalog
Review all tracked Google models before deciding whether this matchup is the right shortlist.
Open Google modelsThis model always redirects to the latest model in the Google Gemini Flash family.
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...