API cost decision in 10 seconds
GPT-5.4 Nano vs 🔥Gemini 3 Flash Preview
Pick GPT-5.4 Nano for lower cost; pick Gemini 3 Flash Preview only if the larger context window matters more.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick GPT-5.4 Nano for lower cost; pick Gemini 3 Flash Preview only if the larger context window matters more.
On the standard 1M input plus 500K output workload, GPT-5.4 Nano is estimated at $0.82 vs $2 for Gemini 3 Flash Preview, saving $1.18 (58.8% lower).
Cost-first pickGPT-5.4 Nano
Context-first pickGemini 3 Flash Preview
Sample savings$1.1858.8%
10x traffic gap$11.75
Gemini 3 Flash Preview has more context, but GPT-5.4 Nano saves $1.18 on the standard workload. At 10x that traffic, the same price gap is about $11.75. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
GPT-5.4 Nano stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | GPT-5.4 Nano | Gemini 3 Flash Preview |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | GPT-5.4 Nano | $1.63 | $4 |
| Balanced workload | 1M input + 1M output | GPT-5.4 Nano | $1.45 | $3.5 |
| Output-heavy chatbot | 1M input + 5M output | GPT-5.4 Nano | $6.45 | $15.5 |
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
GPT-5.4 Nano has the lower input price, GPT-5.4 Nano has the lower output price, and Gemini 3 Flash Preview offers the larger context window.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.82 for GPT-5.4 Nano and $2 for Gemini 3 Flash Preview.
Choose GPT-5.4 Nano when you care most about lower input-token price, and lower output-token price.
Choose Gemini 3 Flash Preview when you care most about larger context window.
| Feature | GPT-5.4 Nano (OpenAI) | 🔥Gemini 3 Flash Preview (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.2 | $0.5 |
| Completion Price per 1M tokens | $1.25 | $3 |
| Sample Workload Cost 1M input + 500K output | $0.82 | $2 |
| Context Window | 400K | 1.05M |
| Release Date | 2026-03-17 | 2025-12-17 |
| Popularity | #7 |
GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks. It supports text and image inputs and is designed for low-latency...
Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool...
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | GPT-5.4 Nano | On the standard 1M input plus 500K output workload, GPT-5.4 Nano is estimated at $0.82 vs $2 for Gemini 3 Flash Preview, saving $1.18 (58.8% lower). |
| High-volume input processing | GPT-5.4 Nano | Lower prompt-token price matters most when prompts or retrieved passages dominate the bill. |
| Long responses and chatbots | GPT-5.4 Nano | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Gemini 3 Flash Preview | A larger context window leaves more room for retrieved passages and source files. |