AI model releases, May 2026
5 model releases in our dataset for May 2026, from Anthropic, Google, Cohere, xAI. The newest is Claude Opus 4.8 (May 28, 2026).
Period May 1, 2026 to May 31, 2026 · last verified · Reported from vendor pages, not run by us · this lists releases we track, not every model a vendor shipped · Markdown
| Date | Model | Vendor | Status | Release date source |
|---|---|---|---|---|
| Claude Opus 4.8 | Anthropic | generally available | source · Date of the launch entry in the Claude Platform release notes (API availability). | |
| Nano Banana Pro | generally available | source | ||
| Command A+ | Cohere | generally available | source | |
| Grok Build 0.1 | xAI | limited access | source | |
| Gemini 3.1 Flash-Lite | generally available | source |
What each release is
Claude Opus 4.8
Anthropic ·
Modalities not verified
Context window 1M
Nano Banana Pro
Google ·
InImageTextOutImageText
Context window 66K
Command A+
Cohere ·
Modalities not verified
Context window 128K
Grok Build 0.1
xAI ·
InTextImageOutText
Context window 256K
Gemini 3.1 Flash-Lite
Google ·
InTextImageVideoAudioPDFOutText
Context window 1.05M