Summary

ChatGPT is the conversational AI assistant developed by OpenAI, now powered by GPT-5 since August 2025
Free with limited access to GPT-4o mini, paid plans from $20 to $200/month depending on needs
Multimodal capabilities: processes text, images, code, data analysis and image generation via DALL-E 3
Particularly effective for writing, programming and task automation
Over 700 million weekly users in 2025, market-leading generative AI platform

The AI assistant transforming your daily productivity

ChatGPT has established itself as the go-to artificial intelligence tool for professionals and individuals looking to automate creative and analytical tasks. Since its launch by OpenAI in late 2022, the platform has continuously evolved to become a true versatile assistant capable of understanding and generating content across multiple formats.

The major revolution of 2025 lies in the arrival of GPT-5, which unifies advanced reasoning capabilities with a more intuitive interface and significantly improved performance. This evolution positions ChatGPT as an intelligent work partner rather than just a text generation tool.

Whether you're a writer, developer, marketer or business owner, ChatGPT adapts to your specific needs through its contextual learning ability and long-term memory. The platform excels particularly in writing assistance, complex problem solving, data analysis and creative idea generation.

How does ChatGPT work?

ChatGPT is built on the GPT-5 architecture, a large language model (LLM) trained on billions of text data points to understand and generate natural language. The system uses advanced machine learning techniques to analyze the context of your requests and produce coherent, relevant responses.

The GPT-5 model, launched in August 2025, represents a significant advancement with its adaptive reasoning capabilities. It can automatically switch between a fast mode for simple queries and a deep thinking mode for complex problems. This adaptive intelligence delivers more accurate responses while optimizing processing times.

The tool operates across multiple interaction modalities. In text mode, it can write, correct, summarize and translate content in over 50 languages. In multimodal mode, it analyzes and generates images, processes PDF documents, and can even interpret complex graphs or tables. The Code Interpreter function allows it to execute Python code to solve mathematical problems or analyze data.

Personalization represents another major asset. ChatGPT can memorize your preferences, work style and ongoing projects through its long-term memory function activated by default in 2025. This continuous learning capability progressively transforms the tool into a truly personalized assistant.

ChatGPT core features:

Advanced text generation: writing, editing, summaries, translations
Image analysis and processing: description, analysis, generation via DALL-E 3
Assisted programming: code generation, debugging, optimization in 20+ languages
Integrated web search (paid versions) with cited sources
Data analysis: CSV, Excel processing, chart generation
Custom agent creation (custom GPTs) for specific tasks
Integrations: Gmail, Google Calendar, Microsoft Office (depending on plan)
Contextual memory for personalized long-term conversations

Our opinion on ChatGPT

ChatGPT remains the most versatile and accessible AI assistant on the market in 2025. Its intuitive interface masks the technical complexity of GPT-5, allowing any user to benefit from professional-grade AI without a particular learning curve. Response quality has improved considerably with an 80% reduction in factual errors compared to previous versions.

The major asset lies in its adaptability. Whether you want to automate email writing, generate complex code or analyze business data, ChatGPT naturally adjusts to context and required technical level. This flexibility makes it particularly appreciated by multidisciplinary teams.

However, the increasing dependency on paid versions may deter some users. The free version, while accessible, imposes significant limitations in terms of daily usage and access to the most powerful models. Additionally, response times can lengthen during peak hours, particularly for free users.

"At Digidop, we have been using ChatGPT since its launch to optimize our SEO workflows and technical content writing. GPT-5 has truly changed the game: the responses are more accurate, and the memory feature saves us a considerable amount of time on our internal and client projects." - Thibaut, SEO/GEO Consultant at Digidop.

ChatGPT advantages and disadvantages

✅ Strengths

Exceptional versatility: from simple writing to complex technical analyses
Intuitive interface accessible to beginners and experts alike
Continuous improvement: regular updates and new features
Rich ecosystem: marketplace of custom GPTs, third-party integrations
Reference performance: GPT-5 sets new standards in accuracy and speed

❌ Weaknesses

Free version limitations: strict quotas and restricted access to advanced models
Cost of advanced plans: up to $200/month for complete Pro access
Internet dependency: impossible to function offline
Sometimes excessive censorship: content filters that can block legitimate queries

Results and performance with ChatGPT

Performance metrics for GPT-5 demonstrate significant advances over previous generations. In mathematics, the model achieves 94.6% success on AIME 2025 tests (competition level), versus 88.9% for competing models. In programming, it scores 74.9% on SWE-bench Verified, the reference benchmark for software engineering.

In our internal tests at Digidop, ChatGPT has allowed us to reduce the time spent on SEO content optimization by 40%.

Frequently asked questions about ChatGPT

Is ChatGPT really free?

Yes, ChatGPT offers a free version with access to the GPT-4o mini model. However, this version imposes usage quotas and limited features. For professional use, paid plans ($20 to $200/month) are generally necessary to access the most powerful models and advanced features.

Can we trust ChatGPT for factual information?

GPT-5 has significantly reduced hallucinations with 80% fewer factual errors. Nevertheless, it remains recommended to verify critical information from official sources, particularly for sensitive domains like health or legal matters. The integrated web search function helps cite reliable sources.

Can ChatGPT replace a developer?

ChatGPT excels at generating code, debugging and optimizing applications. It can create complete websites or automation scripts. However, it doesn't replace human expertise for complex architecture, long-term maintenance and understanding business needs. It's a very powerful assistant but not a complete substitute.

How to protect your data with ChatGPT?

OpenAI guarantees that Enterprise data is not used for training. Professional plans include end-to-end encryption and GDPR compliance. For sensitive data, favor Team/Enterprise plans or explore alternatives like Claude (Anthropic) known for enhanced security.

ChatGPT alternatives

Claude (Anthropic) stands out with its ethical approach and deep analysis capability. Particularly powerful for development and long document analysis, Claude can process up to 200K tokens at once. Its clean interface and structured responses appeal to professionals demanding high-quality outputs.

Google Gemini offers the advantage of native integration with the Google ecosystem (Gmail, Docs, Drive). Gemini 2.5 Pro excels at processing large data volumes and benefits from real-time web information access via Google Search. Ideal for users already anchored in the Google Workspace universe.

Perplexity AI positions itself as the intelligent search engine par excellence. Unlike ChatGPT which sometimes generates information, Perplexity systematically cites its reliable sources and allows filtering by content type (academic, news, Reddit). Particularly recommended for research and information monitoring. You'll find Perplexity in our tool list for optimizing your SEO research.

Maximize your productivity with ChatGPT

ChatGPT proves particularly suited to digital professionals juggling writing, data analysis and automation. SEO marketers will appreciate its keyword analysis capabilities and optimized content generation. Developers will find a valuable partner for rapid prototyping and debugging.

The investment in a Pro plan (200 USD/month) quickly pays off due to the weekly time savings.

The ChatGPT ecosystem will continue evolving with autonomous agent integration and new interaction modalities. To stay at the forefront of AI innovation and discover other complementary tools, regularly check our selection of SEO and Webflow tools. Combined mastery of ChatGPT and specialized tools like Google Search Console or Ahrefs now constitutes a decisive competitive advantage.

Sources and resources

Sources: OpenAI ChatGPT Pricing - DataCamp GPT-5 Analysis - Semrush ChatGPT Alternatives Guide

ChatGPT