Gemini 2.5 Pro vs Gemini 4 Argon

Gemini 2.5 Pro (Google) versus Gemini 4 Argon (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 6.4 Credits / M for Gemini 4 Argon, so Gemini 2.5 Pro is 69% cheaper. Context windows are 1M and 1M.

Gemini 2.5 Progemini-2.5-pro
Google
Input (prompt)
2Credits / M
≈ $0.302
Output (completion)
16Credits / M
≈ $2.42
1M context · 64K output76% off
Gemini 2.5 Pro details
Gemini 4 Argongemini-4-argon
Google
Input (prompt)
6.4Credits / M
≈ $0.966
Output (completion)
32Credits / M
≈ $4.83
1M context · 64K output76% off
Gemini 4 Argon details
Lower input price
Gemini 2.5 Pro
69% cheaper

Specs side by side

Item
Gemini 2.5 Progemini-2.5-pro
Gemini 4 Argongemini-4-argon
Input (prompt) · Credits / M2≈ $0.3026.4≈ $0.966
Output (completion) · Credits / M16≈ $2.4232≈ $4.83
Cache read · Credits / M0.20.32
Context window1M1M
Max output64K64K
7-day uptime——
Latest probe latency——
Measured throughput80.3 t/s62.0 t/s
ProtocolsAnthropic Messages / Gemini generateContentAnthropic Messages / Gemini generateContent
Sample monthly cost (10M in + 2M out)52≈ $7.85128≈ $19.32

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 ProGemini 4 Argon
Vision
Function Calling
Reasoning
Prompt Caching
Response Schema
Audio
Video
File Input
Streaming
Web Search
Realtime
Session
Media
Multipart Form
Binary Response

FAQ

Which is cheaper, Gemini 2.5 Pro or Gemini 4 Argon?

At the SoleAPI default channel price, Gemini 2.5 Pro input costs 2 Credits / M and Gemini 4 Argon input costs 6.4 Credits / M, so Gemini 2.5 Pro is 69% cheaper. Output and cache prices are in the specs table above.

Which has the larger context window, Gemini 2.5 Pro or Gemini 4 Argon?

Gemini 2.5 Pro offers 1M tokens, Gemini 4 Argon offers 1M tokens.

Can I switch between Gemini 2.5 Pro and Gemini 4 Argon 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 4 Argon 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 4 Argon

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