Gemini 3.1 Pro Preview vs Gemini 4 Argon

Gemini 3.1 Pro Preview (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 3.2 Credits / M for Gemini 3.1 Pro Preview and 6.4 Credits / M for Gemini 4 Argon, so Gemini 3.1 Pro Preview is 50% cheaper. Context windows are 1M and 1M.

Gemini 3.1 Pro Previewgemini-3.1-pro-preview
Google
Input (prompt)
3.2Credits / M
≈ $0.483
Output (completion)
19.2Credits / M
≈ $2.90
1M context · 64K output76% off
Gemini 3.1 Pro Preview 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 3.1 Pro Preview
50% cheaper

Specs side by side

Item
Gemini 3.1 Pro Previewgemini-3.1-pro-preview
Gemini 4 Argongemini-4-argon
Input (prompt) · Credits / M3.2≈ $0.4836.4≈ $0.966
Output (completion) · Credits / M19.2≈ $2.9032≈ $4.83
Cache read · Credits / M0.320.32
Context window1M1M
Max output64K64K
7-day uptime78.0%—
Latest probe latency2.71 s—
Measured throughput70.7 t/s62.0 t/s
ProtocolsAnthropic Messages / Gemini generateContentAnthropic Messages / Gemini generateContent
Sample monthly cost (10M in + 2M out)70.4≈ $10.63128≈ $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 3.1 Pro PreviewGemini 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 3.1 Pro Preview or Gemini 4 Argon?

At the SoleAPI default channel price, Gemini 3.1 Pro Preview input costs 3.2 Credits / M and Gemini 4 Argon input costs 6.4 Credits / M, so Gemini 3.1 Pro Preview is 50% cheaper. Output and cache prices are in the specs table above.

Which has the larger context window, Gemini 3.1 Pro Preview or Gemini 4 Argon?

Gemini 3.1 Pro Preview offers 1M tokens, Gemini 4 Argon offers 1M tokens.

Can I switch between Gemini 3.1 Pro Preview 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 3.1 Pro Preview 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 3.1 Pro Preview and Gemini 4 Argon

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