Open Source · 10 pieces on file
Open Source
Open weights, licences, parameter counts, and what the latest checkpoints actually let an operator do.
Feature · JULY 5, 2026
Meituan ships LongCat-2.0: 1.6T MoE, 1M context, trained end-to-end on Chinese ASICs
Meituan open-sourced LongCat-2.0 on Hugging Face and GitHub under MIT, unmasking the 1.6-trillion-parameter MoE that had been leading OpenRouter as 'Owl Alpha' — and the first trillion-parameter system pretrained and served entirely on a 50,000-card domestic ASIC cluster.
More in Open Source
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JUNE 24, 2026
GLM-5.2 lands at 744B parameters, MIT-licensed, and tied with Opus 4.8 on long-horizon coding
Z.ai's open-weights flagship debuts at #1 on open-source coding boards with a 1M-token context, IndexShare cutting per-token FLOPs 2.9x, and API pricing roughly one-sixth of GPT-5.5's.
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JUNE 23, 2026
OpenAI ships full GPT-5.5-Cyber at 85.6% CyberGym, opens Patch the Planet with Trail of Bits across 19 projects
The Daybreak expansion pairs a permissive-only preview's full release — 85.6% CyberGym, 39.5% ExploitGym — with an open-source remediation sprint that merged dozens of patches across cURL, Python, and the Linux kernel in its opening week.
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JUNE 18, 2026
OVHcloud Plans Frontier Model Family, Says €1B Project Now Costs €150M–€200M
At VivaTech 2026, CEO Octave Klaba said OVHcloud has completed pre-training on one model using Europe's Jupiter supercomputer, with a full open-source family to follow as Washington's Anthropic shutoff reframes Europe's sovereignty debate.
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JUNE 14, 2026
US orders Anthropic to pull Fable 5 and Mythos 5 worldwide over a narrow jailbreak claim
A Commerce Department export-control letter sent at 5:21 pm ET on June 12 forced Anthropic to disable its Mythos-class models for every user globally — three days after Fable 5's general release.
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JUNE 13, 2026
Z.ai Ships GLM-5.2 With 1M-Token Context and an MIT Pledge — and No Benchmarks
Zhipu's international brand pushed its 744B MoE flagship to a million-token window and added dual thinking-effort presets, but launched without a single score and gated the weights behind a 'next week' promise.
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JUNE 12, 2026
Kimi K2.7-Code ships open weights, cuts thinking tokens 30%, and edges Opus 4.8 on MCPMark
Moonshot's coding-focused post-train on the K2.6 MoE family lands on Hugging Face under a Modified MIT license, reports +21.8% on its own Kimi Code Bench v2, and forces thinking mode on every call.
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JUNE 11, 2026
OpenAI files confidential S-1 with the SEC, one week after Anthropic
OpenAI confirmed a draft registration statement on June 10, 2026 at an $852 billion valuation. Goldman Sachs and Morgan Stanley are leading; the company says it has not committed to a timeline.
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JUNE 9, 2026
Microsoft ships seven MAI models from scratch, declares independence from OpenAI distillation
At Build 2026, Mustafa Suleyman's AI Superintelligence team unveiled MAI-Thinking-1 at 97% on AIME 2025 and 53% on SWE-Bench Pro, alongside a 5B-active coding model that lands today as a VS Code default — all trained without third-party distillation.
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JUNE 6, 2026
Microsoft ships seven MAI models, with MAI-Thinking-1 matching Opus 4.6 on SWE-Bench Pro
At Build 2026, Microsoft AI released a 35B-active-parameter sparse MoE reasoning model trained from scratch, plus six companions across image, voice, transcription, and coding. The flagship hits 97% on AIME 2025 and 53% on SWE-Bench Pro.