OpenAI: GPT-5 Image vs Google: Nano Banana Pro (Gemini 3 Pro Image): Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI: GPT-5 Image (openai/gpt-5-image) vs Google: Nano Banana Pro (Gemini 3 Pro Image) (google/gemini-3-pro-image). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI: GPT-5 Image (openai/gpt-5-image) 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).
Google: Nano Banana Pro (Gemini 3 Pro Image) (google/gemini-3-pro-image) — 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 OpenAI: GPT-5 Image (API ID: openai/gpt-5-image) vs Google: Nano Banana Pro (Gemini 3 Pro Image) (API ID: google/gemini-3-pro-image), Google: Nano Banana Pro (Gemini 3 Pro Image) offers lower standard input pricing at $2/1M tokens ($12/1M output), while Google: Nano Banana Pro (Gemini 3 Pro Image) leads in cached prefix economics at $1/1M tokens (50% discount). OpenAI: GPT-5 Image 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 | OpenAI: GPT-5 Image | Google: Nano Banana Pro (Gemini 3 Pro Image) | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openai/gpt-5-image | google/gemini-3-pro-image | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $10 / $10 | $2 / $12 | Google: Nano Banana Pro (Gemini 3 Pro Image) |
| Cache Read Price (per 1M) | $5/1M (50% Off) | $1/1M (50% Off) | Google: Nano Banana Pro (Gemini 3 Pro Image) |
| Context Window / Max Output | 391K In / 125K Out | 128K In / 32K Out | OpenAI: GPT-5 Image |
| P90 First-Token / Edge Latency | 280ms | 280ms | OpenAI: GPT-5 Image (-0ms) |
[GPT-5](https://openrouter.ai/openai/gpt-5) Image combines OpenAI's GPT-5 model with state-of-the-art image generation capabilities. It offers major improvements in reasoning, code
Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reas
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 OpenAI: GPT-5 Image to Google: Nano Banana Pro (Gemini 3 Pro Image)
Nano Banana Pro is Google’s most advanced image-generation and editing model, built on Gemini 3 Pro. It extends the original Nano Banana with significantly improved multimodal reas Verified P90 latency of 280ms.