OpenAI: GPT-5.2-Codex vs Mistral: Mistral Small 3.1 24B: Live Promos, Pricing, Hidden Fees & Latency
Verified 2026 FinOps benchmark comparing OpenAI: GPT-5.2-Codex (openai/gpt-5.2-codex) vs Mistral: Mistral Small 3.1 24B (mistralai/mistral-small-3.1-24b-instruct). Simulate cache read multipliers, context cliffs, MAU bills, and P90 latency.
OpenAI: GPT-5.2-Codex (openai/gpt-5.2-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).
Mistral: Mistral Small 3.1 24B (mistralai/mistral-small-3.1-24b-instruct) 2026 Q4 Developer Promotion & Volume Credits
Official 2026 Q4 promotion for Mistral: Mistral Small 3.1 24B: Activate ephemeral prefix caching to slash input costs by 50% (down to $0.1755/1M) or route via asynchronous Batch API for 50% off standard token rates.
In Etuki October 2026 FinOps telemetry comparing OpenAI: GPT-5.2-Codex (API ID: openai/gpt-5.2-codex) vs Mistral: Mistral Small 3.1 24B (API ID: mistralai/mistral-small-3.1-24b-instruct), Mistral: Mistral Small 3.1 24B offers lower standard input pricing at $0.351/1M tokens ($0.555/1M output), while Mistral: Mistral Small 3.1 24B leads in cached prefix economics at $0.1755/1M tokens (50% discount). OpenAI: GPT-5.2-Codex 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-5.2-Codex | Mistral: Mistral Small 3.1 24B | Verified Advantage |
|---|---|---|---|
| Official Vendor API ID | openai/gpt-5.2-codex | mistralai/mistral-small-3.1-24b-instruct | Pinned Snapshot IDs |
| Standard Input / Output (per 1M) | $1.75 / $14 | $0.351 / $0.555 | Mistral: Mistral Small 3.1 24B |
| Cache Read Price (per 1M) | $0.875/1M (50% Off) | $0.1755/1M (50% Off) | Mistral: Mistral Small 3.1 24B |
| Context Window / Max Output | 391K In / 125K Out | 125K In / 100K Out | OpenAI: GPT-5.2-Codex |
| P90 First-Token / Edge Latency | 280ms | 280ms | OpenAI: GPT-5.2-Codex (-0ms) |
GPT-5.2-Codex is an upgraded version of GPT-5.1-Codex optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, in
Mistral Small 3.1 24B Instruct is an upgraded variant of Mistral Small 3 (2501), featuring 24 billion parameters with advanced multimodal capabilities. It provides state-of-the-art
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-5.2-Codex to Mistral: Mistral Small 3.1 24B
Mistral Small 3.1 24B Instruct is an upgraded variant of Mistral Small 3 (2501), featuring 24 billion parameters with advanced multimodal capabilities. It provides state-of-the-art Verified P90 latency of 280ms.