OpenAI Gpt 4 Turbo Preview vs OpenAI GPT-5.4 nano: Live Promos, Pricing, Hidden Fees & Latency
OpenAI Gpt 4 Turbo Preview (openai/gpt-4-turbo-preview) Startup Credits & Batch API 50% Off Promo
OpenAI GPT-6.1 Sol ($2/$10 base rate) qualifies for immediate 95% automatic prefix caching ($0.10/1M), 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-5.4 nano (gpt-5.4-nano) Startup Credits & Batch API 50% Off Promo
OpenAI GPT-6.1 Sol ($2/$10 base rate) qualifies for immediate 95% automatic prefix caching ($0.10/1M), 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 Gpt 4 Turbo Preview (API ID: openai/gpt-4-turbo-preview) vs OpenAI GPT-5.4 nano (API ID: gpt-5.4-nano), OpenAI GPT-5.4 nano offers lower standard input pricing at $0.2/1M tokens ($1.25/1M output), while OpenAI GPT-5.4 nano leads in cached prefix economics at $0.02/1M tokens (90% discount). OpenAI GPT-5.4 nano achieves a 85ms faster P90 time-to-first-token latency (110ms vs 195ms).
Gateway-synced rate ($10/$30 per 1M, flat 128K window). Verify upstream provider cache TTL and regional routing before high-volume batch runs.
Enable Prompt Context Caching & Batch API to reduce repeated system prompt input token burn by 50%-97.5%.
| Specification / FinOps Dimension | OpenAI Gpt 4 Turbo Preview | OpenAI GPT-5.4 nano | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openai/gpt-4-turbo-preview | gpt-5.4-nano | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $10 / $30 | $0.2 / $1.25 | OpenAI GPT-5.4 nano |
| Cache Read Price (per 1M) | $1/1M (90% Off) | $0.02/1M (90% Off) | OpenAI GPT-5.4 nano |
| Context Window / Max Output | 128K In / 64K Out | 128K In / 128K Out | OpenAI GPT-5.4 nano |
| P90 First-Token / Edge Latency | 195ms | 110ms | OpenAI GPT-5.4 nano (-85ms) |
OpenAI Gpt 4 Turbo Preview (openai/gpt-4-turbo-preview): OpenRouter gateway-synced model at $10/1M input, $30/1M output, $1/1M cached input (128K context window).
OpenAI GPT-5.4 nano high-throughput classification & routing model ($0.20/$1.25 per 1M, Official Cache Read $0.02/1M [90% Off], 128K context window).
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 4 Turbo Preview to OpenAI GPT-5.4 nano
OpenAI GPT-5.4 nano high-throughput classification & routing model ($0.20/$1.25 per 1M, Official Cache Read $0.02/1M [90% Off], 128K context window). Verified P90 latency of 110ms.