Google: Gemini 3.1 Pro Preview Custom Tools vs OpenAI: GPT Audio: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Google: Gemini 3.1 Pro Preview Custom Tools (google/gemini-3.1-pro-preview-customtools) vs OpenAI: GPT Audio (openai/gpt-audio). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Google: Gemini 3.1 Pro Preview Custom Tools (google/gemini-3.1-pro-preview-customtools) — 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.
OpenAI: GPT Audio (openai/gpt-audio) Startup Credits & Batch API 50% Off Promo
OpenAI GPT-6.1 Sol ($2/$10 base rate) qualifies for immediate 75% automatic prefix caching ($0.50/1M), 50% off 24-hour Batch API completions ($1/$5), and up to $150,000 in OpenAI/Azure Foundry credits via Microsoft for Startups Founders Hub (no VC funding required for initial tiers).
In Etuki October 2026 FinOps telemetry comparing Google: Gemini 3.1 Pro Preview Custom Tools (API ID: google/gemini-3.1-pro-preview-customtools) vs OpenAI: GPT Audio (API ID: openai/gpt-audio), Google: Gemini 3.1 Pro Preview Custom Tools offers lower standard input pricing at $2/1M tokens ($12/1M output), while Google: Gemini 3.1 Pro Preview Custom Tools leads in cached prefix economics at $1/1M tokens (50% discount). Google: Gemini 3.1 Pro Preview Custom Tools achieves a 0ms faster P90 time-to-first-token latency (280ms vs 280ms).
Auto-discovered via live global telemetry registry.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | Google: Gemini 3.1 Pro Preview Custom Tools | OpenAI: GPT Audio | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | google/gemini-3.1-pro-preview-customtools | openai/gpt-audio | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $2 / $12 | $2.5 / $10 | Google: Gemini 3.1 Pro Preview Custom Tools |
| Cache Read Price (per 1M) | $1/1M (50% Off) | $1.25/1M (50% Off) | Google: Gemini 3.1 Pro Preview Custom Tools |
| Context Window / Max Output | 1024K In / 64K Out | 125K In / 16K Out | Google: Gemini 3.1 Pro Preview Custom Tools |
| P90 First-Token / Edge Latency | 280ms | 280ms | Google: Gemini 3.1 Pro Preview Custom Tools (-0ms) |
Google: Gemini 3.1 Pro Preview Custom Tools
API ID: google/gemini-3.1-pro-preview-customtools • Live RegistryGemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-part
The gpt-audio model is OpenAI's first generally available audio model. The new snapshot features an upgraded decoder for more natural sounding voices and maintains better voice con
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 3.1 Pro Preview Custom Tools to OpenAI: GPT Audio
The gpt-audio model is OpenAI's first generally available audio model. The new snapshot features an upgraded decoder for more natural sounding voices and maintains better voice con Verified P90 latency of 280ms.