Side by side pricing and context for Claude Sonnet 4.6 and Gemini 2.5 Flash. Rates are curated catalog values with last verified dates on each model page.
Claude Sonnet 4.6
Previous Sonnet generation still useful for stable production prompts. Compare against Sonnet 5 on your real traffic mix before migrating.
Input $3.00 / Output $15.00 per 1M
Context 1M · Approx (Anthropic family)
Gemini 2.5 Flash
Low-latency Gemini for chat and high throughput. Often the cost/speed sweet spot on Google. Approx token counts in the browser.
Input $0.300 / Output $2.50 per 1M
Context 1M · Approx (Gemini family)
Quick take
- Gemini 2.5 Flash is cheaper on input in this catalog snapshot.
- Gemini 2.5 Flash is cheaper on output in this catalog snapshot.
- Both last verified on their model pages (2026-08-02 / 2026-08-02).
Rate table
| Metric | Claude Sonnet 4.6 | Gemini 2.5 Flash |
|---|---|---|
| Input / 1M | $3.00 | $0.300 |
| Output / 1M | $15.00 | $2.50 |
| Cached input / 1M | $0.300 | $0.030 |
| Context | 1M | 1M |
| Tokenizer | Approx (Anthropic family) | Approx (Gemini family) |