Google: Nano Banana 2.1 vs OpenAI GPT-5.3-Codex: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing Google: Nano Banana 2.1 (google/gemini-nano-banana-2.1) vs OpenAI GPT-5.3-Codex (gpt-5.3-codex). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
Google: Nano Banana 2.1 (google/gemini-nano-banana-2.1) — 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-5.3-Codex (gpt-5.3-codex) 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: Nano Banana 2.1 (API ID: google/gemini-nano-banana-2.1) vs OpenAI GPT-5.3-Codex (API ID: gpt-5.3-codex), Google: Nano Banana 2.1 offers lower standard input pricing at $1.5/1M tokens ($7.5/1M output), while Google: Nano Banana 2.1 leads in cached prefix economics at $0.75/1M tokens (50% discount). OpenAI GPT-5.3-Codex achieves a 30ms faster P90 time-to-first-token latency (250ms vs 280ms).
Auto-discovered via live global telemetry registry.
Enable Prompt Context Caching & Batch API to reduce repeated system prompt input token burn by 50%-97.5%.
| Specification / FinOps Dimension | Google: Nano Banana 2.1 | OpenAI GPT-5.3-Codex | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | google/gemini-nano-banana-2.1 | gpt-5.3-codex | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $1.5 / $7.5 | $1.75 / $14 | Google: Nano Banana 2.1 |
| Cache Read Price (per 1M) | $0.75/1M (50% Off) | $0.875/1M (50% Off) | Google: Nano Banana 2.1 |
| Context Window / Max Output | 64K In / 58K Out | 1000K In / 128K Out | OpenAI GPT-5.3-Codex |
| P90 First-Token / Edge Latency | 280ms | 250ms | OpenAI GPT-5.3-Codex (-30ms) |
Nano Banana 2.1 (Gemini Nano Banana 2.1) is Google's image generation and editing model on the Flash tier, succeeding Nano Banana 2 and Nano Banana Pro. It improves product reconte
Dedicated agentic software engineering model tuned for multi-hour terminal and IDE sessions.
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: Nano Banana 2.1 to OpenAI GPT-5.3-Codex
Dedicated agentic software engineering model tuned for multi-hour terminal and IDE sessions. Verified P90 latency of 250ms.