AI Events and Announcements to Watch, November 2026 Through March 2027

Some AI dates come with a stage and a keynote. Others arrive as a line in a deprecations table and break something quietly. This page collects both kinds for the next five months, from now through March 2027, and says plainly which ones are confirmed by the organizer and which are only reported.

It was compiled on Oct. 29, 2026 from official event pages, vendor documentation and news reports, and dates can move. Check the linked source before you book travel or plan a migration.

The Calendar at a Glance

Conferences You Can Attend

Web Summit, Nov. 9 to 12, Lisbon. A general technology conference where AI is one of several tracks. It runs Monday through Thursday at the MEO Arena and the FIL venue, according to an event listing from the European Commission's HADEA agency.

Microsoft Ignite, Nov. 17 to 20, San Francisco. Microsoft's own site confirms the dates and city. A roundup of AI dates says the keynote is Nov. 17 at the Chase Center, but Microsoft's page does not give the keynote date or venue, so confirm that before you plan around it. Ignite is where Microsoft tends to announce its enterprise AI and agent products.

AWS re:Invent, Nov. 30 to Dec. 4, Las Vegas. In person at the Las Vegas Convention Center, according to an event listing. Amazon's cloud, chip and AI model announcements usually land here.

NeurIPS, Dec. 6 to 13, Sydney, Atlanta and Paris. This year's machine-learning research conference runs in three cities at the same time. On NeurIPS's dates page, Sydney's main conference is Dec. 8 to 10 with workshops Dec. 11 and 12, Atlanta's main conference is Dec. 10 and 11 (tutorials Dec. 9, workshops Dec. 12 and 13), and Paris's is Dec. 9 to 11 with workshops Dec. 12 and 13. Other roundups list slightly different days, so use NeurIPS's own page. The organizers' reason for the split is not stated in the sources we read. If you cannot travel, the paper and poster topics matter more than the venue, since much of the research shows up online first.

CES 2027, Jan. 6 to 9, Las Vegas. CES's site lists the dates and one announced keynote, from Lenovo at the Sphere. It does not list an AI-focused keynote, so treat CES as the place to see consumer AI hardware, not a source of model news.

Nvidia GTC 2027, March 14 to 18, San Jose. Nvidia's FAQ says March 14 to 18, while a banner on the same page says March 15 to 18, so check the registration page. The event also offers virtual attendance.

Dates That Change Your Code, Your Bill or Your Rules

These are the entries most likely to cost someone money or uptime.

• Anthropic. Claude Sonnet 4.5 retires from the API on Nov. 30, with `claude-sonnet-5-5` as the recommended replacement, according to Anthropic's deprecations page. Claude Opus 4.5 has an earliest retirement date of Nov. 24 but no firm date. Anthropic says it gives at least 60 days' notice before retiring public models.
• OpenAI. Per OpenAI's deprecations page, Agent Builder, the Evals dashboard and API, and the v1/prompts API shut down Nov. 30. Image models including `gpt-image-1.5` follow on Dec. 1. On Dec. 11, GPT-5, GPT-5 mini and nano, GPT-5 pro, o3 and o3-pro snapshots shut down. In January, text-to-speech models go on Jan. 6, GPT-4o and GPT-4.1 on Jan. 14, and several realtime and audio models on Jan. 20. OpenAI lists replacements for each.
• Google. Gemini 4 Argon's introductory $2 / $10 price ends Nov. 30, and it is $4 / $20 from Dec. 1, per Google's pricing page. Gemini 3.8 Flash's promotional $0.75 / $3.75 ends Dec. 31 and becomes $1.50 / $7.50 on Jan. 1. See our model comparison for how that shifts the math.
• European Union. On Dec. 2, new AI Act prohibitions take effect for AI systems that generate non-consensual intimate imagery or child sexual abuse material. Generative AI systems already on the market before Aug. 2, 2026 get a transition deadline for the Article 50(2) machine-readable marking rule, according to the Commission's AI Act timeline, which flags that date as amended by the Digital Omnibus. The high-risk rules for Annex III systems are listed for Dec. 2, 2027.
• Deadlines in the middle. Most of the software dates above give one to four weeks of runway. If you depend on a pinned model name, check each vendor's page this week.

Announcements That May Land

Anthropic IPO. A report by IPOScoop says Anthropic filed its S-1 on Oct. 26, 2026 with a proposed ticker of ANT, and that the filing did not give offering terms. Bloomberg reported earlier that marketing could begin the week of Nov. 9, with trading before Thanksgiving on Nov. 26 and a listing by year-end. The size and valuation figures in the coverage, including a roughly $75 billion raise and a market capitalization of $1.5 trillion to $2 trillion, are expectations from investors and reporters, not announced terms. IPOScoop also reports that, per the filing, Anthropic had a net loss of about $109.7 billion on $19.7 billion of revenue for the 12 months to June 30, 2026. We have not read the filing ourselves. Watch for the public prospectus, the price range and the exchange.

Election-season AI. The U.S. midterms are on Nov. 3. Researchers quoted in a recent AI news digest warn that AI-generated falsehoods are spreading ahead of the vote, with reduced trust-and-safety staffing at platforms. Expect platform policy announcements and fact-checking stories in the days around it.

San Francisco's data center pause. A roundup estimates that the city's 45-day moratorium on new data centers ends around Nov. 20 to 30 unless the Board of Supervisors extends it. The city has not published an end date, and reports differ on when the clock started, so treat this one as an estimate.

Model launches with no date. None of these has an announced date:

• OpenAI's next flagship, referred to in coverage as GPT-7. The Information reported on Oct. 13 that OpenAI is fixing safety issues first.
• A new Anthropic model. Reuters reported on Sept. 18 that Anthropic is considering one in response to GPT-6 Astra. A listing named "Fable 5.5" briefly appeared in Azure's catalog, according to TestingCatalog, and Anthropic has not confirmed it.
• OpenAI's Private Inference preview, which OpenAI described at DevDay as coming "this fall."

How to Use This List

This section is analysis, not reporting.

• If you build on APIs, the shutdown dates are the real events. Put Nov. 30, Dec. 1 and Dec. 11 on your team calendar and test the replacement models now, not on the deadline.
• If you buy AI services, Argon's Dec. 1 price change and the end of promotional prices mean any budget built on October rates will be low. Ask vendors what the rate is after the intro period.
• If you follow the industry, conference keynotes tend to hold the product news (Ignite, re:Invent, GTC) and NeurIPS holds the research. CES is mostly gadgets.
• If you invest or work near the IPO, read the public prospectus when it appears and treat headline valuations as unconfirmed until then.
• Treat undated launches as rumors. A flagship that is "coming soon" has missed dates before. The October gap between announced and available models is a reason to keep a second model qualified for anything important.

What We Cannot Conclude

We did not attend or verify any event, and we did not read the Anthropic filing. Event dates and venues come from organizer pages where we could open them and from roundups where we could not, and the two disagree in a few places, which the text notes. Reported items such as the IPO timeline and the San Francisco moratorium could change or turn out wrong. This list is not complete: smaller conferences, regional events and unannounced launches are not here.

Why It Matters

• Quiet deadlines cost more than keynotes. Model shutdowns and price changes cluster at the end of November and the start of December.
• Prices are rising on schedule. Introductory rates, including Argon's, end within weeks.
• The calendar is crowded in December. AWS re:Invent, a three-city NeurIPS, the EU's Dec. 2 deadline and OpenAI's Dec. 11 shutdowns all land within about two weeks.
• Reported is not announced. The IPO and the next flagship models are the biggest stories on this list and the least certain.