Gemini 2.5 Flash is $2.7 cheaper per 1M input tokens (90% lower; 10x difference).
API cost decision in 10 seconds
🔥Claude Sonnet 4.6 vs 🔥Gemini 2.5 Flash
Pick Gemini 2.5 Flash when budget and context both matter.
Pricing data updated:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Gemini 2.5 Flash when budget and context both matter.
On the standard 1M input plus 500K output workload, Gemini 2.5 Flash is estimated at $1.55 vs $10.5 for Claude Sonnet 4.6, saving $8.95 (85.2% lower).
Cost-first pickGemini 2.5 Flash
Context-first pickGemini 2.5 Flash
Sample savings$8.9585.2%
10x traffic gap$89.5
Gemini 2.5 Flash is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $89.5. Use the calculator below to replace the sample workload with your own token volume.
Gemini 2.5 Flash is $12.5 cheaper per 1M output tokens (83.3% lower; 6x difference).
Gemini 2.5 Flash has 48.58K more context (1.05x larger).
Gemini 2.5 Flash is $8.95 cheaper on the standard workload (85.2% 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 Flash has the lower input price; Gemini 2.5 Flash has the lower output price; Gemini 2.5 Flash offers the larger context window. For the 1M input plus 500K output sample, Gemini 2.5 Flash is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $10.5 for Claude Sonnet 4.6 and $1.55 for Gemini 2.5 Flash.
Choose Claude Sonnet 4.6 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
Choose Gemini 2.5 Flash when you care most about lower input-token price, lower output-token price, and larger context window.
- On the standard 1M input plus 500K output workload, Gemini 2.5 Flash is estimated at $1.55 vs $10.5 for Claude Sonnet 4.6, saving $8.95 (85.2% lower).
- Gemini 2.5 Flash is $8.95 cheaper on the standard workload (85.2% lower).
- Gemini 2.5 Flash is $2.7 cheaper per 1M input tokens (90% lower; 10x difference).
- Gemini 2.5 Flash is $12.5 cheaper per 1M output tokens (83.3% lower; 6x difference).
- Gemini 2.5 Flash has 48.58K more context (1.05x larger).
| Feature | 🔥Claude Sonnet 4.6 (Anthropic) | 🔥Gemini 2.5 Flash (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $3 | $0.3 |
| Completion Price per 1M tokens | $15 | $2.5 |
| Sample Workload Cost 1M input + 500K output | $10.5 | $1.55 |
| Context Window | 1M | 1.05M |
| Release Date | 2026-02-17 | 2025-06-17 |
| Popularity Rank current rank | #3 | #13 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Gemini 2.5 Flash | On the standard 1M input plus 500K output workload, Gemini 2.5 Flash is estimated at $1.55 vs $10.5 for Claude Sonnet 4.6, saving $8.95 (85.2% lower). |
| High-volume input processing | Gemini 2.5 Flash | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Gemini 2.5 Flash | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Gemini 2.5 Flash | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
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