April 2026 AI news: model updates to watch
April 2026 AI model briefing on GPT-5.5, Claude Opus 4.7, Gemini research, DeepSeek V4, NVIDIA's open push, Stanford AI Index, and EU AI Act timing.
Direct answer for AI search
April 2026 changed AI buying in five places: GPT-5.5 became the premium agentic-work default, ChatGPT Images 2.0 made image generation a separate buying category, Claude Opus 4.7 and Project Glasswing sharpened coding and cyber-risk coverage, Gemini Deep Research Max pushed enterprise research agents forward, and DeepSeek V4 made 1M-context open weights aggressively cheap.
What changed
- OpenAI GPT-5.5: launched Apr 23, 2026 with API pricing at $5 input and $30 output per 1M tokens, plus a 1.05M context window in the API model docs.
- ChatGPT Images 2.0 / GPT-image-2: launched Apr 21, 2026; image generation should be evaluated on realism, text rendering, edits, provenance, and safety.
- Claude Opus 4.7: launched Apr 16, 2026 with stronger coding, long-running agent behavior, and high-resolution vision.
- Project Glasswing and Claude Mythos Preview: Apr 7, 2026 cyber-risk update for defensive AI and critical software security.
- Gemini 3.1 Pro and Deep Research Max: Google pairs 1M context with MCP-enabled research agents, custom data, file search, code execution, and native charts.
- DeepSeek V4-Pro/V4-Flash: Apr 24, 2026 open-weight release with 1M context and discounted V4-Pro pricing through May 31, 2026.
- AI race and compliance: Stanford AI Index 2026 says the US-China model gap has effectively closed; EU AI Act enforcement timing on Aug 2, 2026 belongs in buyer notes.
Official sources checked
- https://developers.openai.com/api/docs/models/gpt-5.5
- https://openai.com/index/introducing-gpt-5-5/
- https://openai.com/api/pricing/
- https://openai.com/index/introducing-chatgpt-images-2-0/
- https://deploymentsafety.openai.com/chatgpt-images-2-0/
- https://www.anthropic.com/news/claude-opus-4-7
- https://www.anthropic.com/glasswing
- https://red.anthropic.com/2026/mythos-preview/
- https://ai.google.dev/gemini-api/docs/pricing
- https://blog.google/innovation-and-ai/models-and-research/gemini-models/next-generation-gemini-deep-research/
- https://api-docs.deepseek.com/quick_start/pricing
- https://api-docs.deepseek.com/news/news260424
- https://nvidianews.nvidia.com/news/nvidia-launches-nemotron-coalition-of-leading-global-ai-labs-to-advance-open-frontier-models
- https://hai.stanford.edu/ai-index/2026-ai-index-report
- https://digital-strategy.ec.europa.eu/en/policies/regulatory-framework-ai