Gemini 2.5 Flash Image vs Gemini 3 Pro Image

Gemini 2.5 Flash Image (Google) versus Gemini 3 Pro Image (Google): API pricing, context window, capabilities and uptime, from the same data as each model page, at the SoleAPI default channel price. Input costs 0.48 Credits / M for Gemini 2.5 Flash Image and 3.2 Credits / M for Gemini 3 Pro Image, so Gemini 2.5 Flash Image is 85% cheaper. Context windows are 64K and 64K.

Gemini 2.5 Flash Imagegemini-2.5-flash-image
Google
Input (prompt)
0.48Credits / M
≈ $0.0727
Output (completion)
4Credits / M
≈ $0.606
64K context · 32K output76% off
Gemini 2.5 Flash Image details
Gemini 3 Pro Imagegemini-3-pro-image
Google
Input (prompt)
3.2Credits / M
≈ $0.485
Output (completion)
19.2Credits / M
≈ $2.91
64K context · 32K output76% off
Gemini 3 Pro Image details
Lower input price
Gemini 2.5 Flash Image
85% cheaper
More exclusive capabilities
Gemini 2.5 Flash Image
Prompt Caching, Response Schema

Specs side by side

Item
Gemini 2.5 Flash Imagegemini-2.5-flash-image
Gemini 3 Pro Imagegemini-3-pro-image
Input (prompt) · Credits / M0.48≈ $0.07273.2≈ $0.485
Output (completion) · Credits / M4≈ $0.60619.2≈ $2.91
Cache read · Credits / M——
Context window64K64K
Max output32K32K
7-day uptime——
Latest probe latency——
Measured throughput128.7 t/s28.9 t/s
ProtocolsAnthropic Messages / Gemini generateContentAnthropic Messages / Gemini generateContent
Sample monthly cost (10M in + 2M out)12.8≈ $1.9470.4≈ $10.66

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

CapabilityGemini 2.5 Flash ImageGemini 3 Pro Image
Vision
Streaming
Reasoning
Prompt Caching
Response Schema
Web Search
Function Calling
Audio
Video
File Input
Realtime
Session
Media
Multipart Form
Binary Response

FAQ

Which is cheaper, Gemini 2.5 Flash Image or Gemini 3 Pro Image?

At the SoleAPI default channel price, Gemini 2.5 Flash Image input costs 0.48 Credits / M and Gemini 3 Pro Image input costs 3.2 Credits / M, so Gemini 2.5 Flash Image is 85% cheaper. Output and cache prices are in the specs table above.

Which has the larger context window, Gemini 2.5 Flash Image or Gemini 3 Pro Image?

Gemini 2.5 Flash Image offers 64K tokens, Gemini 3 Pro Image offers 64K tokens.

Can I switch between Gemini 2.5 Flash Image and Gemini 3 Pro Image 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 Flash Image and Gemini 3 Pro Image differ?

Only Gemini 2.5 Flash Image: Prompt Caching, Response Schema. Only Gemini 3 Pro Image: Reasoning, Web Search. 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 Flash Image and Gemini 3 Pro Image

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