# AI model releases, May 2026

5 AI model releases we verified for May 2026 from 4 vendors, including Claude Opus 4.8, Nano Banana Pro, Command A+, Grok Build 0.1 and more. Dates, status and a vendor source link for each.

Period: 2026-05-01 to 2026-05-31 · Last verified: 2026-10-26 · Canonical: https://theagenticweekly.com/models/releases/2026-05 · All models: https://theagenticweekly.com/models · JSON: https://theagenticweekly.com/models.json

This lists the releases in our dataset for the period, not every model a vendor shipped. Every row links to the vendor page that states the release date. We did not run any of these models (evidence: Reported).

| Date | Model | Vendor | Status | Release date source |
|---|---|---|---|---|
| 2026-05-28 | [Claude Opus 4.8](https://theagenticweekly.com/models/claude-opus-4-8) | Anthropic | generally available | https://platform.claude.com/docs/en/release-notes/overview |
| 2026-05-28 | [Nano Banana Pro](https://theagenticweekly.com/models/nano-banana-pro) | Google | generally available | https://ai.google.dev/gemini-api/docs/changelog |
| 2026-05-20 | [Command A+](https://theagenticweekly.com/models/command-a-plus) | Cohere | generally available | https://docs.cohere.com/changelog |
| 2026-05-19 | [Grok Build 0.1](https://theagenticweekly.com/models/grok-build-0-1) | xAI | limited access | https://docs.x.ai/docs/release-notes |
| 2026-05-07 | [Gemini 3.1 Flash-Lite](https://theagenticweekly.com/models/gemini-3-1-flash-lite) | Google | generally available | https://ai.google.dev/gemini-api/docs/changelog |

- **Claude Opus 4.8** (Anthropic, May 28, 2026): Anthropic's Claude Opus 4.8, launched May 28, 2026 with a 1M-token context by default and 128k max output. Date note: Date of the launch entry in the Claude Platform release notes (API availability).
- **Nano Banana Pro** (Google, May 28, 2026): Google's gemini-3-pro-image model for image generation and editing, generally available since May 28, 2026.
- **Command A+** (Cohere, May 20, 2026): Cohere's Command A+, released May 20, 2026 as a mixture-of-experts model with vision, reasoning, translation and agentic abilities, under Apache 2.0.
- **Grok Build 0.1** (xAI, May 19, 2026): xAI's coding model trained for agentic coding workflows, in early access since May 19, 2026.
- **Gemini 3.1 Flash-Lite** (Google, May 7, 2026): Google's Gemini 3.1 Flash-Lite, generally available since May 7, 2026; a smaller, lower-latency tier than Flash.

Data licence: CC BY 4.0. Data: Agentic Weekly (https://theagenticweekly.com), CC BY 4.0.