OpenAI GPT-6.1 Sol vs OpenAI: GPT-5.1-Codex-Max: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI GPT-6.1 Sol (gpt-6.1-sol) vs OpenAI: GPT-5.1-Codex-Max (openai/gpt-5.1-codex-max). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI & Microsoft Founders Hub ($2,500–$150,000 Credits) + 50% Batch API Discount
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-5.1-Codex-Max (openai/gpt-5.1-codex-max) 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 GPT-6.1 Sol (API ID: gpt-6.1-sol) vs OpenAI: GPT-5.1-Codex-Max (API ID: openai/gpt-5.1-codex-max), OpenAI: GPT-5.1-Codex-Max offers lower standard input pricing at $1.25/1M tokens ($10/1M output), while OpenAI GPT-6.1 Sol leads in cached prefix economics at $0.5/1M tokens (75% discount). OpenAI GPT-6.1 Sol achieves a 10ms faster P90 time-to-first-token latency (270ms vs 280ms).
Context Cliff Alert: Prompts exceeding 272K tokens double in price from $2/$10 to $4/$15 per 1M tokens.
Auto-discovered via live global telemetry registry.
| Specification / FinOps Dimension | OpenAI GPT-6.1 Sol | OpenAI: GPT-5.1-Codex-Max | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | gpt-6.1-sol | openai/gpt-5.1-codex-max | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $2 / $10 | $1.25 / $10 | OpenAI: GPT-5.1-Codex-Max |
| Cache Read Price (per 1M) | $0.5/1M (75% Off) | $0.625/1M (50% Off) | OpenAI GPT-6.1 Sol |
| Context Window / Max Output | 1000K In / 128K Out | 391K In / 125K Out | OpenAI GPT-6.1 Sol |
| P90 First-Token / Edge Latency | 270ms | 280ms | OpenAI GPT-6.1 Sol (-10ms) |
OpenAI October 2026 flagship reasoning & coding model delivering near-Astra intelligence at 1/5th the cost.
GPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasonin
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-6.1 Sol to OpenAI: GPT-5.1-Codex-Max
GPT-5.1-Codex-Max is OpenAI’s latest agentic coding model, designed for long-running, high-context software development tasks. It is based on an updated version of the 5.1 reasonin Verified P90 latency of 280ms.