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GPT-5.5 is OpenAI's first completely retrained base model since GPT-4.5, leading the field on agentic coding and computer use - but the doubled per-token pricing and delayed API access require careful evaluation.
DeepSeek V4-Pro matches Claude Opus 4.6 on SWE-bench at a fraction of the cost - a thorough review of what it gets right, where it still trails, and whether the price gap justifies the switch.
A hands-on review of Gemini CLI, Google's open-source AI agent for the terminal - featuring Gemini 3.1 Pro, 1M context, built-in Google Search, MCP support, and the most generous free tier in the category.
Claude Opus 4.7 leads SWE-bench and agent benchmarks but regresses on web research, inflates token costs by up to 35%, and trades prose quality for literal instruction-following.
Z.ai's GLM-5.1 is a 754B open-weight model that claims the top spot on SWE-Bench Pro without a single NVIDIA chip - here's how it holds up in practice.
OpenAI's GPT-5.4-Cyber is a fine-tuned defensive cybersecurity model with binary reverse engineering, lowered refusal thresholds, and restricted access through the Trusted Access for Cyber program.
xAI's Grok 4.20 replaces the single-model approach with four specialized agents that debate before every answer - a bold architectural bet that pays off in some areas and stumbles in others.
Meta's first proprietary frontier model leads on HealthBench Hard and scientific reasoning but trails rivals in coding and agentic tasks - with no public API yet.
Google's Gemma 4 family - four models, full Apache 2.0 licensing, and benchmark scores that challenge models 10x their size - is the most consequential open-weight release of 2026 so far.
A hands-on review of Google's Agent Development Kit - the open-source framework for building multi-agent AI systems, with a look at its strengths, limitations, and how it stacks up against LangGraph and CrewAI.
ByteDance's DeerFlow 2.0 is a powerful open-source agent harness that executes long-horizon tasks inside Docker sandboxes - impressive engineering, but not a turnkey solution.
NVIDIA Nemotron 3 Super is the strongest open-weight model for agentic coding as of March 2026, but its efficiency-first design means real trade-offs on general knowledge and chat quality.
