Frontier
๐ฅ Top Story
Claude Mythos vs. GLM-5.1: The Open/Closed Fracture of April 2026
April 7 marked a philosophical turning point. Anthropic confirmed Claude Mythos โ its most capable model ever โ then immediately locked it behind "Project Glasswing," a 50-company restricted access program (Microsoft, Apple, Google, Amazon, NVIDIA, CrowdStrike, JPMorgan). Used exclusively to scan infrastructure for zero-day vulnerabilities. Preview pricing: $25/M input, $125/M output. No public API, no release date.
Hours later, Zhipu AI released GLM-5.1 under the MIT license โ 744B parameters, 40B active per forward pass, 200K context window, free to self-host. It reportedly outperforms both Claude Opus 4.6 and GPT-5.4 on SWE-Bench Pro (expert-level software engineering). The price gap between the week's most and least expensive frontier models: $125/M output vs. $0.
GoogleApache 2.0
Google Gemma 4 Family โ Multimodal, 256K Context, Open
Released April 2 under Apache 2.0. Four variants: Effective 2B & 4B (edge/phones), 26B MoE, and 27B Dense โ ranked 3rd globally on Arena AI (Elo: 1452). All support text + images + video; edge models add native audio. 256K context on larger variants. Day-zero support across Hugging Face, Ollama, vLLM, llama.cpp, LM Studio, Android Studio, NVIDIA NIM. Run via ollama run gemma4:27b.
Microsoft
Microsoft's First Indie AI Models โ MAI-Transcribe, Voice & Image
Microsoft shipped 3 new first-party AI models April 2 via Azure Foundry and MAI Playground โ independent of OpenAI. MAI-Transcribe-1: best-in-class speech-to-text (3.8% WER across 25 languages, beating Whisper-large-v3). MAI-Voice-1: 60x real-time audio, custom voice from seconds of sample audio, $22/M chars (competing directly with ElevenLabs). MAI-Image-2: 2x faster than predecessor, $5/M tokens input.
AnthropicDesktop
Claude Computer Use Comes to Windows
Previously macOS-only since its March 23 launch, Claude's computer use feature now works on Windows for Pro and Max plan subscribers. Claude can open apps, navigate Chrome, fill spreadsheets, run dev tools, and complete multi-step desktop tasks fully autonomously. Part of the Claude Cowork and Claude Code Desktop suite.
AlibabaAgentic
Qwen 3.6-Plus โ Agentic-Native at $0.28/M Tokens
Alibaba released Qwen 3.6-Plus on April 2 with native multi-step agentic reasoning built in โ not bolted on. Open-weight friendly. Pricing: ~$0.28/M input tokens, making it one of the most cost-effective agentic models available. Strong tool-use and planning benchmarks.
xAI
Grok Gets Speed & Quality Modes โ Output Control Upgraded
xAI shipped new Speed and Quality modes for Grok, giving users explicit control over inference performance vs. output quality tradeoff. Better for agentic pipelines where latency matters. Paired with upcoming Grok 4.20 model reported for late April release, targeting top benchmark positions.