AI Launch Profile
Introducing GPT-4.5
OpenAI released GPT-4.5 as a research preview of its strongest GPT chat model, emphasizing broader knowledge, creativity, and natural collaboration.
At a glance
Launch Snapshot
- Company
- OpenAI
- Launch date
- February 27, 2025
- Launch type
- Model Release
- Category
- AI Productivity Tools
- Audience
- Creators, Developers, Enterprises
- Pricing
- Launched for ChatGPT Pro and paid API users as a compute-intensive research preview; API preview access was later deprecated, so current availability must be checked against OpenAI docs.
- Free plan
- No
- API
- Yes
- Open weights/source
- No
Launch Context
Use these links to move from this record into the broader Launch Intelligence database.
Verification & Sources
- Status
- Verified
- Source links
- 4
- Freshness
- Needs recheck: verified June 8, 2026
- Last verified
- June 8, 2026
- Last updated
- June 11, 2026
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Kingy Launch Score
6.5 / 10 · Mixed
One earned credibility score, computed from cited evidence — not a placeholder. How the Kingy Launch Score works
Why this score
- Source & verification 8.0/10 — Launch post, system card, API model docs, and the deprecations page — four dated first-party sources. openai.com
- Product evidence 6.0/10 — Launched as a compute-intensive research preview; the record notes API preview access was later deprecated. developers.openai.com
- Significance & novelty 6.5/10 — A research preview of OpenAI's strongest GPT chat model at the time — now chiefly a historical marker before GPT-4.1. openai.com
- Traction signals not scored — insufficient sourced evidence
- Offer clarity 5.0/10 — Launched for ChatGPT Pro and paid API users; current availability must be checked against OpenAI docs after the preview deprecation. developers.openai.com
Evidence checked 2026-07-10
Creator Coverage Next Steps
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Kingy AI Take
OpenAI released GPT-4.5 as a research preview of its then-strongest GPT chat model, emphasizing broader knowledge, creativity, and natural collaboration — with a system card published (openai.com). Creators, Developers, and Enterprises evaluated it through ChatGPT Pro and the paid API. The record itself notes the API preview was later deprecated, so treat this as a historical marker and verify what is actually available today before referencing it.
Who it is for
Developers and ChatGPT users exploring writing, programming, communication, brainstorming, and creative work.
Traction notes
Notable as a high-end GPT-path model before GPT-4.1 became the lower-cost developer successor in the API.
Source-backed record