Muse Spark 1.3, Gemini 3.8 Flash, and Moonshot's IPO: 5 AI moves in 24 hours

In brief

Five developments

1. Meta rolls out Muse Spark 1.3 for coding and agents

• What changed: Meta began rolling out Muse Spark 1.3 in Muse Code and the Meta Model API. Meta says the update improves long-running agent work, instruction following, coding, and resistance to prompt injection. 1
• Scale and terms: Meta's engineers measured about 20% fewer tool calls and 25% fewer tokens than Muse Spark 1.2 on its coding tasks. Axios reported the rollout at 19:10 UTC on September 2 and said the price remains the same as the previous model. 2
• Why it matters: Standard reasoning is rolling out now; Meta plans to add the max-reasoning mode after more safety testing. Developers can test the release in Meta's coding and agent surfaces before that higher-effort mode arrives. Source: Meta AI Research; timing and pricing: Axios.

2. Google ships Gemini 3.8 Flash and a defender-only cyber variant

• What changed: Google released Gemini 3.8 Flash for general coding, agentic, and multi-step reasoning work, alongside Gemini 3.8 Flash Cyber for trusted defenders through the Fairwind Program. 3
• Scale and terms: Google reports 54.9% on HLE-Verified for Gemini 3.8 Flash. Google also reports that Flash Cyber produced 2.6 times more correct Chrome vulnerability patches than larger commercial models in a Chrome Security test. 3
• Why it matters: Gemini 3.8 Flash is available through the Gemini API, AI Studio, Google Antigravity, Gemini Enterprise, and selected consumer products at $0.75 per million input tokens and $3.75 per million output tokens through December 31. Flash Cyber remains limited to trusted testers; 9to5Google reported the launch at 15:18 UTC on September 2. Source: Google; timing: 9to5Google.

3. Moonshot reportedly files confidentially for a Hong Kong IPO

• What changed: Beijing-based Moonshot, the company behind the Kimi large language model, has confidentially filed for a Hong Kong initial public offering, Reuters reports, citing three people familiar with the plans. 4
• Scale and terms: One source put the fundraising target at $3 billion. Two sources put Moonshot's valuation at $50 billion in an ongoing funding round; Reuters says the company has raised more than $5.5 billion in total and is working with Goldman Sachs, CICC, and Deutsche Bank. 4
• Why it matters: The filing would add another major Chinese AI listing to the sector's IPO pipeline, while regulatory approvals and market conditions still control the timetable and final terms. Reuters published the report at 07:08 UTC on September 3. Source: Reuters.

4. Wonderful raises $550 million at a $5 billion valuation

• What changed: Israeli-Dutch enterprise AI startup Wonderful raised a $550 million Series C led by Insight Partners. Salesforce joined the round, alongside returning investors including Index Ventures, IVP, and Vine Ventures. 5
• Scale and terms: The financing values Wonderful at $5 billion, more than twice its roughly $2 billion valuation from a March Series B. TechCrunch says the company operates in more than 35 countries and has raised $150 million in the earlier round. 5
• Why it matters: Wonderful says it will use the money to speed product development, expand forward-deployed engineering teams, and meet demand for its AI operating system, which coordinates agents and existing company software. TechCrunch published the report at 16:04 UTC on September 2. Source: TechCrunch.

5. New York City announces a one-year AI moratorium for younger students

• What changed: New York City Mayor Zohran Mamdani announced a one-year moratorium on student use of AI in public elementary and middle schools. The policy covers about 600,000 students through eighth grade and would halt the current use of roughly 40 educational tools, Reuters reports. 6
• Scope and exceptions: High school students may use AI in some cases. Teachers may continue using AI for lesson planning and scheduling, while the city works out the boundary for classroom use. 6
• Why it matters: The announcement sets a large public-school deployment boundary, with implementation details still pending. Reuters published the report at 19:53 UTC on September 2. Source: Reuters.

The read-through

Watch next

• Meta's max-reasoning release and the safety details that accompany it. 1
• The access terms and external test results for Gemini 3.8 Flash Cyber. 3
• Moonshot's IPO timetable, regulatory approvals, and final fundraising terms. 4
• Wonderful's product expansion and customer growth after the Series C. 5
• New York City's final classroom rules and the implementation date for the announced moratorium. 6