Practical guides on resumes, placements, interviews and career roadmaps, written for students and freshers.
Article20 Oct 2026
GPT-6 now powers ChatGPT, with Sol for paid plans and Luna for Free and Go. Learn how Intelligent UI and answering-while-thinking work, the Astra and GPT-6.1 Sol timeline, its limits, and how students and freshers can use it.
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GPT-5.6 split ChatGPT into Luna, Terra and Sol tiers. Learn when it launched, how the effort slider works, what it can and can't do, where it stands in October 2026, and what it teaches students and freshers about AI careers.
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GPT-5.5 launched on 23 April 2026 for multi-step professional work, agentic coding and computer use. Learn the road from GPT-5.3 and 5.4, what GPT-5.5 Instant and Cyber are, its October 2026 retirement, and what it means for freshers.
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GPT-5 launched on 7 August 2025 as one system with a fast model, a thinking model and a router. Learn how it worked, what GPT-5.1 and 5.2 changed, when it left ChatGPT, and what it means for students and freshers.
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What was GPT-4.5? Learn when OpenAI launched it, how scaling unsupervised learning differs from reasoning, its EQ and writing strengths, how GPT-4.1 fits in, when both left ChatGPT, and what students can learn from it.
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What were OpenAI o3, o3-mini and o4-mini? Learn when they launched, how reasoning models think, what agentic tool use and "thinking with images" meant, when they left ChatGPT, and what they teach students about AI skills.
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OpenAI o1 explained in depth: how the first ChatGPT reasoning model used chain of thought and test-time compute, o1-preview vs o1-mini vs o1 pro, strengths, limits, current status in 2026 and what it means for students.
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GPT-4o explained in depth: what "omni" means, how it handled text, voice and images, GPT-4o mini, Advanced Voice, image generation, the sycophancy rollback, its 13 Feb 2026 retirement from ChatGPT and what it teaches students.
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GPT-4 launched on 14 March 2023 as OpenAI's first multimodal GPT model. Learn what was new, why its size was never disclosed, how GPT-4 Turbo, plugins and GPTs changed ChatGPT, its limits, its 2026 status and what it means for students.
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GPT-3.5 powered the first ChatGPT on 30 November 2022. Learn how InstructGPT and RLHF made it useful, what GPT-3.5 Turbo added, its limits, why GPT-4o mini replaced it in July 2024, and what its story teaches students about AI careers.
Read articleArticle20 Oct 2026
New to ChatGPT or Claude? Learn how to sign up, write prompts that work, and use both AI tools for studying, resumes, interview practice and job applications, plus which one to pick and the mistakes to avoid.
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