Chat Smith now gives Pro users access to GPT-5, OpenAI's most capable unified model, included in the Pro plan at no extra charge.
GPT-5 was officially launched by OpenAI on August 7, 2025, marking a fundamental shift in how the company structures its models. Rather than requiring users to choose between a fast model and a reasoning model, GPT-5 operates as a single unified system with an intelligent router that automatically selects between fast processing and deep reasoning based on the complexity of each query. It is the direct successor to GPT-4.1 and the o-series, integrating capabilities that previously required switching between multiple models.
What makes GPT-5 stand out
Unified adaptive reasoning system. GPT-5 eliminates the need to manually switch between models. A built-in real-time router automatically applies fast, high-throughput processing for routine queries and deep chain-of-thought reasoning for complex multi-step problems — all within the same conversation.
Native multimodal processing. Unlike previous models that added vision or audio as separate modules, GPT-5 was designed from the ground up to seamlessly handle text, images, and audio in a single interaction. It can analyze a chart and write a report, debug UI issues from a screenshot, or interpret presentation slides without context loss.
1 million token context window. GPT-5 supports up to 1 million tokens of context, making it practical for processing full codebases, lengthy legal or research documents, and long-running agentic tasks that need to retain large amounts of information across many steps.
Significantly reduced hallucinations. GPT-5 represents a meaningful step forward in accuracy and reliability compared to earlier generations. It scored 94.6% on AIME 2025 and 88.4% on GPQA expert benchmarks — improvements that translate into more trustworthy outputs for professional and production use.
Included in Chat Smith Pro — no extra cost
Chat Smith Pro users can use GPT-5 right now without any additional subscription or credit purchase. Open the model selector, choose GPT-5, and start your session. No upgrade required.
Chat Smith is built around a simple idea: give users access to the best AI tools available, all in one place, without friction.
GPT-5 is available now for all Chat Smith Pro users at https://chatsmith.io/model/gpt-5.
