Gemini 2.5 Pro is $0.5 cheaper per 1M input tokens (28.6% lower; 1.4x difference).
API cost decision in 10 seconds
Gemini 2.5 Pro vs GPT-5.2
Pick Gemini 2.5 Pro 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 2.5 Pro when budget and context both matter.
On the standard 1M input plus 500K output workload, Gemini 2.5 Pro is estimated at $6.25 vs $8.75 for GPT-5.2, saving $2.5 (28.6% lower).
Cost-first pickGemini 2.5 Pro
Context-first pickGemini 2.5 Pro
Sample savings$2.528.6%
10x traffic gap$25
Gemini 2.5 Pro is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $25. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Gemini 2.5 Pro stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Gemini 2.5 Pro | GPT-5.2 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Gemini 2.5 Pro | $11.25 | $15.75 |
| Balanced workload | 1M input + 1M output | Gemini 2.5 Pro | $11.25 | $15.75 |
| Output-heavy chatbot | 1M input + 5M output | Gemini 2.5 Pro | $51.25 | $71.75 |
Gemini 2.5 Pro is $4 cheaper per 1M output tokens (28.6% lower; 1.4x difference).
Gemini 2.5 Pro has 648.58K more context (2.62x larger).
Gemini 2.5 Pro is $2.5 cheaper on the standard workload (28.6% 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 2.5 Pro has the lower input price; Gemini 2.5 Pro has the lower output price; Gemini 2.5 Pro offers the larger context window. For the 1M input plus 500K output sample, Gemini 2.5 Pro is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $6.25 for Gemini 2.5 Pro and $8.75 for GPT-5.2.
Choose Gemini 2.5 Pro when you care most about lower input-token price, lower output-token price, and larger context window.
Choose GPT-5.2 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, Gemini 2.5 Pro is estimated at $6.25 vs $8.75 for GPT-5.2, saving $2.5 (28.6% lower).
- Gemini 2.5 Pro is $2.5 cheaper on the standard workload (28.6% lower).
- Gemini 2.5 Pro is $0.5 cheaper per 1M input tokens (28.6% lower; 1.4x difference).
- Gemini 2.5 Pro is $4 cheaper per 1M output tokens (28.6% lower; 1.4x difference).
- Gemini 2.5 Pro has 648.58K more context (2.62x larger).
| Feature | Gemini 2.5 Pro (Google) | GPT-5.2 (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $1.25 | $1.75 |
| Completion Price per 1M tokens | $10 | $14 |
| Sample Workload Cost 1M input + 500K output | $6.25 | $8.75 |
| Context Window | 1.05M | 400K |
| Release Date | ||
| Popularity | #55 | #66 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Gemini 2.5 Pro | On the standard 1M input plus 500K output workload, Gemini 2.5 Pro is estimated at $6.25 vs $8.75 for GPT-5.2, saving $2.5 (28.6% lower). |
| High-volume input processing | Gemini 2.5 Pro | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Gemini 2.5 Pro | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Gemini 2.5 Pro | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Gemma 4 31B (free) can replace Gemini 2.5 Pro when lower sample workload cost matters most: $0.
- Gemma 4 26B A4B (free) can replace Gemini 2.5 Pro when lower sample workload cost matters most: $0.
- Lyria 3 Clip Preview can replace Gemini 2.5 Pro when lower sample workload cost matters most: $0.
- Lyria 3 Pro Preview can replace Gemini 2.5 Pro when lower sample workload cost matters most: $0.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
- GPT-5.4 offers 1.05M context with $10 sample workload cost.
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