GPT-5.1 Blog

GPT-5.2 is Coming: What it is new? All You Need to Know

GPT-5.2 is Coming: What it is new? All You Need to Know

OpenAI’s GPT-5.2 is the name being used in the press and inside industry circles for a near-term upgrade to the GPT-5 family of models that powers ChatGPT and

What is GPT-5.1 Pro? A professional explainer and status report

What is GPT-5.1 Pro? A professional explainer and status report

OpenAI’s GPT-5.1 Pro is the latest incremental release in the GPT-5 family: a production-grade model update that refines reasoning, latency/throughput

Claude Opus 4.5: what is it like — and how much will it cost?

Claude Opus 4.5: what is it like — and how much will it cost?

social posts and investigative write-ups have pointed to an upcoming Claude Opus 4.5 (often shortened to “Opus 4.5”) — internally referenced by some sources as Neptune V6 — and to the model being shared with external red-teamers for jailbreak testing. Public details are still fragmentary, so this article collects the available reporting, explains what the leak implies about capability and safety, and gives a grounded estimate of likely pricing and how Opus 4.5 might stack up against Google’s Gemini 3 and OpenAI’s GPT-5.1.

What are GPT-5.1-Codex-Max and How to Use it ?

What are GPT-5.1-Codex-Max and How to Use it ?

On November 19–20, 2025 OpenAI released two related but distinct upgrades: GPT-5.1-Codex-Max, a new agentic coding model for Codex that emphasizes

Gemini 3 Pro vs GPT 5.1: which is better? A Complete Comparison

Gemini 3 Pro vs GPT 5.1: which is better? A Complete Comparison

Both OpenAI’s GPT-5.1 and Google’s Gemini 3 Pro represent incremental but meaningful steps in the ongoing arms race for general-purpose, multimodal AI.

GPT-5.1 vs Claude Sonnet 4.5 — Which one leads the frontier in 2025?

GPT-5.1 vs Claude Sonnet 4.5 — Which one leads the frontier in 2025?

OpenAI’s GPT-5.1 is an incremental but product-focused update that introduces two usage-flavored variants (Instant and Thinking), extended prompt caching, and

GPT-5.1-Codex API

GPT-5.1-Codex API

gpt-5.1-codex is a specialized member of OpenAI’s GPT-5.1 family, optimized for agentic, long-running software-engineering workflows (code generation, patching, large refactors, structured code review and multi-step agentic tasks).

GPT-5.1 API

GPT-5.1 API

GPT 5.1 API is what GPT-5.1 Thinking is the advanced reasoning variant of OpenAI’s GPT-5.1 family, it prioritizes adaptive, higher-quality reasoning while giving developers explicit control over the latency / compute trade-off.