OpenAI: o3 Mini High vs OpenAI: GPT-5.3-Codex: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI: o3 Mini High (openai/o3-mini-high) vs OpenAI: GPT-5.3-Codex (openai/gpt-5.3-codex). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI: o3 Mini High (openai/o3-mini-high) 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).
OpenAI: GPT-5.3-Codex (openai/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 OpenAI: o3 Mini High (API ID: openai/o3-mini-high) vs OpenAI: GPT-5.3-Codex (API ID: openai/gpt-5.3-codex), OpenAI: o3 Mini High offers lower standard input pricing at $1.1/1M tokens ($4.4/1M output), while OpenAI: o3 Mini High leads in cached prefix economics at $0.55/1M tokens (50% discount). OpenAI: o3 Mini High 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: o3 Mini High | OpenAI: GPT-5.3-Codex | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openai/o3-mini-high | openai/gpt-5.3-codex | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $1.1 / $4.4 | $1.75 / $14 | OpenAI: o3 Mini High |
| Cache Read Price (per 1M) | $0.55/1M (50% Off) | $0.875/1M (50% Off) | OpenAI: o3 Mini High |
| Context Window / Max Output | 195K In / 98K Out | 391K In / 125K Out | OpenAI: GPT-5.3-Codex |
| P90 First-Token / Edge Latency | 280ms | 280ms | OpenAI: o3 Mini High (-0ms) |
OpenAI o3-mini-high is the same model as [o3-mini](/openai/o3-mini) with reasoning_effort set to high. o3-mini is a cost-efficient language model optimized for STEM reasoning tasks
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional k
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: o3 Mini High to OpenAI: GPT-5.3-Codex
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional k Verified P90 latency of 280ms.