Gemini 2.5 Pro vs Gemini 3 Flash Preview
Gemini 2.5 Pro (Google) versus Gemini 3 Flash Preview (Google): API pricing, context window, capabilities and uptime, from the same data as each model page, at the SoleAPI default channel price. Input costs 2 Credits / M for Gemini 2.5 Pro and 0.8 Credits / M for Gemini 3 Flash Preview, so Gemini 3 Flash Preview is 60% cheaper. Context windows are 1M and 1M.
Specs side by side
| Item | Gemini 2.5 Progemini-2.5-pro | Gemini 3 Flash Previewgemini-3-flash-preview |
|---|---|---|
| Input (prompt) · Credits / M | 2≈ $0.302 | 0.8≈ $0.121 |
| Output (completion) · Credits / M | 16≈ $2.41 | 4.8≈ $0.724 |
| Cache read · Credits / M | 0.2 | 0.08 |
| Context window | 1M | 1M |
| Max output | 64K | 64K |
| 7-day uptime | — | 95.5% |
| Latest probe latency | — | 2.32 s |
| Measured throughput | 76.9 t/s | 98.9 t/s |
| Protocols | Anthropic Messages / Gemini generateContent | Anthropic Messages / Gemini generateContent |
| Sample monthly cost (10M in + 2M out) | 52≈ $7.85 | 17.6≈ $2.66 |
Prices are the SoleAPI default channel price in Credits (1 Credit = ¥1); green marks the better side. Uptime and latency come from SoleAPI probes; a dash means the model is not probed yet.
Capabilities
FAQ
Which is cheaper, Gemini 2.5 Pro or Gemini 3 Flash Preview?
At the SoleAPI default channel price, Gemini 2.5 Pro input costs 2 Credits / M and Gemini 3 Flash Preview input costs 0.8 Credits / M, so Gemini 3 Flash Preview is 60% cheaper. Output and cache prices are in the specs table above.
Which has the larger context window, Gemini 2.5 Pro or Gemini 3 Flash Preview?
Gemini 2.5 Pro offers 1M tokens, Gemini 3 Flash Preview offers 1M tokens.
Can I switch between Gemini 2.5 Pro and Gemini 3 Flash Preview at any time?
Yes. SoleAPI calls every model with the same API key; switching is just changing the model field in the request, and billing is split per model in one console.
How do the capabilities of Gemini 2.5 Pro and Gemini 3 Flash Preview differ?
Their capability flags are identical. Every other capability is either supported by both or by neither; see the capability table above.
More comparisons
One API key for both Gemini 2.5 Pro and Gemini 3 Flash Preview
Free credits on sign-up, pay as you go, no monthly fee.