Where is gpt 4.5

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Last updated: April 8, 2026

Quick Answer: As of October 2024, GPT-4.5 has not been officially released by OpenAI. The company's latest confirmed model is GPT-4, which was launched on March 14, 2023, with multimodal capabilities supporting text and image inputs. Rumors about GPT-4.5 began circulating in late 2023, but OpenAI has made no official announcements about its development or release timeline.

Key Facts

Overview

GPT-4.5 represents the speculated next iteration in OpenAI's Generative Pre-trained Transformer series, following the groundbreaking GPT-4 model. While rumors about this potential release have circulated since late 2023, OpenAI has maintained official silence regarding its development status. The anticipation stems from the company's established pattern of iterative improvements, with previous models showing significant advancements in capabilities, safety features, and multimodal processing.

The GPT series began with GPT-1 in 2018, evolving through GPT-2 (2019), GPT-3 (2020), and GPT-4 (2023). Each iteration has demonstrated exponential growth in parameters, training data, and practical applications. GPT-4.5 speculation centers on potential enhancements to reasoning capabilities, reduced hallucination rates, and improved efficiency that could further revolutionize how artificial intelligence integrates into daily workflows and creative processes across industries.

How It Works

While specific details about GPT-4.5 remain speculative based on OpenAI's established development patterns, we can examine how such models typically evolve.

Key Comparisons

FeatureGPT-4 (Confirmed)GPT-4.5 (Speculated)
Release DateMarch 14, 2023Unannounced (Rumored 2024-2025)
Parameters~1.76 trillion~2-3 trillion (estimated)
Context Window128K tokens256K+ tokens (potential)
Multimodal SupportText + ImagesText + Images + Video/Audio
Training Data CutoffSeptember 20212023-2024 (estimated)
API Cost per 1K tokens$0.03 (input) / $0.06 (output)Potential 20-30% reduction

Why It Matters

The development of GPT-4.5 represents more than just incremental technological progress—it signifies the continued evolution of artificial intelligence toward more sophisticated, reliable, and accessible systems. As these models become increasingly integrated into daily life and professional workflows, they promise to reshape how we approach problem-solving, creativity, and knowledge acquisition. The forward trajectory suggests not just improved performance metrics, but fundamentally new ways of interacting with information and augmenting human capabilities across every sector of society.

Sources

  1. Wikipedia - GPT-4CC-BY-SA-4.0

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