Source
· Daily Brief
AI Daily Brief — 30 April 2026
End-of-April flourish: xAI ships Grok 4.3 with a 1M-token context window and native video input, plus its most capable voice agent live on API. The flagship-table reshuffle this month — Mythos, Muse Spark, Opus 4.7, Gemma 4, DeepSeek-V4-Pro, Nemotron 3 Nano Omni, and now Grok 4.3 — makes April 2026 the busiest model month of the year so far.
Top stories
- Grok 4.3. 1M-token context, native video input, and an upgraded reasoning core. xAI positions it directly against GPT-5.4, Claude Opus 4.7 and Gemini 3.1 Pro. via xAI
- xAI voice agent on API. The company’s most capable voice agent becomes available programmatically — a direct shot at OpenAI Realtime and Anthropic’s voice surface. via xAI Docs
Quiet corners
April 2026 wrap: Claude Mythos Preview · Muse Spark · GLM-5.1 · MiniMax M2.7 · Claude Opus 4.7 · Claude Design · Gemma 4 · DeepSeek-V4-Pro · Mistral Medium 3.5 · Nemotron 3 Nano Omni · Grok 4.3.
By the numbers
- Grok 4.3 context window: 1M tokens · native video input
- April 2026 frontier-or-flagship model releases: 11 (counted above)
Compiled by AI Feed’s editor from publicly reported announcements on 30 April 2026.