Google Gemini 4 Argon vs Google: Gemini 3.1 Pro Preview: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Google Gemini 4 Argon (gemini-4-argon) vs Google: Gemini 3.1 Pro Preview (google/gemini-3.1-pro-preview). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Gemini 4 Argon 50% Introductory API Discount ($2/$10) & Google AI Startup Grants
Google DeepMind is currently subsidizing Gemini 4 Argon at 50% off standard rates ($2.00/1M input & $10.00/1M output instead of $4/$20) until November 30, 2026, alongside 95% off Context Caching ($0.10/1M) and up to $350,000 in Google for Startups Cloud/Vertex AI credits.
Google: Gemini 3.1 Pro Preview (google/gemini-3.1-pro-preview) — Google AI Startup Credits ($350K) & 50% Cache Promo
Google DeepMind is currently subsidizing Gemini 4 Argon at 50% off standard rates ($2.00/1M input & $10.00/1M output instead of $4/$20) until November 30, 2026, alongside 95% off Context Caching ($0.10/1M) and up to $350,000 in Google for Startups Cloud/Vertex AI credits.
In Etuki October 2026 FinOps telemetry comparing Google Gemini 4 Argon (API ID: gemini-4-argon) vs Google: Gemini 3.1 Pro Preview (API ID: google/gemini-3.1-pro-preview), Google Gemini 4 Argon offers lower standard input pricing at $2/1M tokens ($10/1M output), while Google Gemini 4 Argon leads in cached prefix economics at $0.1/1M tokens (95% discount). Google Gemini 4 Argon achieves a 20ms faster P90 time-to-first-token latency (260ms vs 280ms).
Introductory $2/$10 API rate is locked until Nov 30, 2026, after which standard uncached rates rise to $4/$20.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | Google Gemini 4 Argon | Google: Gemini 3.1 Pro Preview | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | gemini-4-argon | google/gemini-3.1-pro-preview | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $2 / $10 | $2 / $12 | Google Gemini 4 Argon |
| Cache Read Price (per 1M) | $0.1/1M (95% Off) | $1/1M (50% Off) | Google Gemini 4 Argon |
| Context Window / Max Output | 2000K In / 1000K Out | 1024K In / 64K Out | Google Gemini 4 Argon |
| P90 First-Token / Edge Latency | 260ms | 280ms | Google Gemini 4 Argon (-20ms) |
Google DeepMind Oct 2026 frontier release featuring a 1,000,000 (1M) output token limit, 95% cache discount ($0.10/1M), and #1 Vals Index & DeepSWE (77.9%).
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage acro
Real-Time Stack Cost & Hidden-Fee Simulator (MAU / Token / Egress / GMV)
Calibrated with Reddit r/FinOps & r/devops telemetry: Includes Context Caching, Bandwidth Egress, and MoR Tax
🛰️Switch from Google Gemini 4 Argon to Google: Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage acro Verified P90 latency of 280ms.