Tag: LLMs

The city government of Rio de Janeiro just released a frontier-class open AI model. It is built to go head to head with the best open systems on the planet. Rio 3.5 Open 397B comes from IplanRIO, the municipal IT company that runs Rio de Janeiro’s digital services. On its own benchmarks it edges out […]

A Chinese AI lab just released a free model that scores 80.8 on SWE-Bench Verified and 75.3 on Terminal-Bench 2.1, putting it in the same league as GPT-5.5 and Claude Opus 4.7 on real coding work. It is called Nex-N2-Pro, it dropped on June 2, 2026, and it costs nothing to download. The model comes […]

On June 4, 2026, NVIDIA released Nemotron 3 Ultra, a fully open 550 billion parameter reasoning model built specifically for long running agents. According to benchmark platform Artificial Analysis, it is now the most capable open model to come out of a US lab, scoring 48 on the Artificial Analysis Intelligence Index. That puts it […]

On June 2, 2026, at its Build developer conference, Microsoft announced a family of seven in-house AI models under the MAI brand, the most concrete step yet in the company’s plan to stop being just the best distributor of someone else’s frontier models. The lineup spans reasoning, coding, image generation, voice, and transcription, and it […]

On June 1, 2026, MiniMax officially released M3, the Shanghai lab’s next flagship language model, and it shipped exactly as promised. The model that spent weeks as an architecture teaser is now live, and the pitch turned out to be real: frontier-level coding, a 1-million-token context window, and native multimodality, all in one open-weight model. […]

Claude Opus 4.8 takes the #1 spot on the Artificial Analysis Intelligence Index at 61.4, beating GPT-5.5. Full benchmarks, pricing, and what’s new.

Baidu released ERNIE 5.1 on May 8, 2026, hitting #4 on LMArena Search using only 6% of normal pre-training cost. We cover benchmarks, architecture, agentic performance, and how it compares to DeepSeek V4 Pro, Claude Opus 4.6, and Gemini 3.1 Pro.

On May 5, 2026, Subquadratic launched SubQ, the first frontier LLM built on a fully subquadratic sparse-attention architecture, with a 12 million token context window and bold cost claims.

DeepSeek released V4-Pro and V4-Flash on April 24, 2026, open-source MoE models with 1M context, new CSA/HCA hybrid attention, and benchmarks rivaling GPT-5.4 and Claude Opus 4.6. Full breakdown of architecture, benchmarks, pricing, and comparisons.

Update, July 10, 2026: GPT-5.5 has since been succeeded by GPT-5.6, which reached general availability on July 9, 2026 with the Sol, Terra, and Luna tiers and is now OpenAI’s frontier model. This guide remains the deep reference on GPT-5.5, which stays available as the fast Instant default across ChatGPT tiers. On April 23, 2026, […]