Google Gemini Pro Latest is $28 cheaper per 1M input tokens (93.3% lower; 15x difference).
API cost decision in 10 seconds
NewGoogle Gemini Pro Latest vs GPT-5.5 Pro
Pick Google Gemini Pro Latest for lower cost; pick GPT-5.5 Pro 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 Google Gemini Pro Latest for lower cost; pick GPT-5.5 Pro only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Google Gemini Pro Latest is estimated at $8 vs $120 for GPT-5.5 Pro, saving $112 (93.3% lower).
Cost-first pickGoogle Gemini Pro Latest
Context-first pickGPT-5.5 Pro
Sample savings$11293.3%
10x traffic gap$1120
GPT-5.5 Pro has more context, but Google Gemini Pro Latest saves $112 on the standard workload. At 10x that traffic, the same price gap is about $1120. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Google Gemini Pro Latest stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Google Gemini Pro Latest | GPT-5.5 Pro |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Google Gemini Pro Latest | $16 | $240 |
| Balanced workload | 1M input + 1M output | Google Gemini Pro Latest | $14 | $210 |
| Output-heavy chatbot | 1M input + 5M output | Google Gemini Pro Latest | $62 | $930 |
Google Gemini Pro Latest is $168 cheaper per 1M output tokens (93.3% lower; 15x difference).
GPT-5.5 Pro has 1.42K more context (1x larger).
Google Gemini Pro Latest is $112 cheaper on the standard workload (93.3% 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 Pro Latest has the lower input price; Google Gemini Pro Latest has the lower output price; GPT-5.5 Pro offers the larger context window. For the 1M input plus 500K output sample, Google Gemini Pro Latest is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $8 for Google Gemini Pro Latest and $120 for GPT-5.5 Pro.
Choose Google Gemini Pro Latest when you care most about lower input-token price, and lower output-token price.
Choose GPT-5.5 Pro when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Google Gemini Pro Latest is estimated at $8 vs $120 for GPT-5.5 Pro, saving $112 (93.3% lower).
- Google Gemini Pro Latest is $112 cheaper on the standard workload (93.3% lower).
- Google Gemini Pro Latest is $28 cheaper per 1M input tokens (93.3% lower; 15x difference).
- Google Gemini Pro Latest is $168 cheaper per 1M output tokens (93.3% lower; 15x difference).
- GPT-5.5 Pro has 1.42K more context (1x larger).
| Feature | NewGoogle Gemini Pro Latest (Google) | GPT-5.5 Pro (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $2 | $30 |
| Completion Price per 1M tokens | $12 | $180 |
| Sample Workload Cost 1M input + 500K output | $8 | $120 |
| Context Window | 1.05M | 1.05M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Google Gemini Pro Latest | On the standard 1M input plus 500K output workload, Google Gemini Pro Latest is estimated at $8 vs $120 for GPT-5.5 Pro, saving $112 (93.3% lower). |
| High-volume input processing | Google Gemini Pro Latest | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Google Gemini Pro Latest | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-5.5 Pro | 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 Pro Latest when lower sample workload cost matters most: $0.
- Gemma 4 31B (free) can replace Google Gemini Pro Latest when lower sample workload cost matters most: $0.
- Lyria 3 Pro Preview can replace Google Gemini Pro Latest when lower sample workload cost matters most: $0.
- Lyria 3 Clip Preview can replace Google Gemini Pro 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.
- 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 modelsOpenAI catalog
Check other OpenAI models with comparable pricing, context, or release timing.
Open OpenAI modelsThis model always redirects to the latest model in the Google Gemini Pro family.
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...