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Google’s Gemini 3.5 Pro AI model has missed multiple deadlines, causing a $425 billion decline in market value. The delay highlights the high stakes in AI leadership and market confidence.

Google has not yet released its highly anticipated Gemini 3.5 Pro AI model, with multiple missed deadlines in July 2026 leading to a roughly $425 billion decline in its market capitalization. This delay comes despite strong Q1 financials and highlights the high stakes of AI race leadership.

On May 19, 2026, Google announced during I/O that Gemini 3.5 Pro would launch in June. However, as of this week, the model remains unreleased, with internal sources indicating it is months behind schedule due to challenges in improving coding capabilities, an area where competitors like OpenAI and Anthropic have gained an edge. Bloomberg reported on July 16 that Google’s internal efforts to upgrade the model failed to meet expectations after a late-June training data update, prompting the company to delay the launch.

The market’s reaction was swift: Alphabet’s stock dropped 4.4% the day after Bloomberg’s report, erasing approximately $200 billion in value. This decline, combined with a prior $225 billion selloff in late June following the departure of key DeepMind researchers to competitors, totals an estimated $425 billion loss in less than a month. Despite these market shifts, Google’s core financials—such as $109.9 billion revenue in Q1 and 63% growth in Google Cloud—remain unchanged, underscoring that the value loss is driven by investor confidence rather than financial fundamentals.

Third-party reports suggest that Google may be discarding a near-ready model, restarting pre-training on a native Gemini 3 foundation, citing reliability issues like hallucinations. However, Google has not confirmed these claims, and specific specifications such as token window size or release dates are still unverified. The repeated missed deadlines—initially promised for June, then July, and a widely reported target of July 17—highlight ongoing delays in bringing the flagship model to market.

At a glance
reportWhen: developing; delays announced in July 20…
The developmentGoogle’s Gemini 3.5 Pro AI model has been delayed multiple times, resulting in a significant market capitalization loss and raising questions about the company’s AI development timeline.

Impact of AI Development Delays on Market Leadership

The delay of Gemini 3.5 Pro underscores the high stakes in AI race leadership, where market confidence is directly tied to technological progress. The $425 billion loss illustrates how absent or delayed flagship models can lead to a sharp revaluation of a company’s future prospects, especially when competitors are releasing open-weight models that challenge proprietary offerings.

This situation demonstrates that in the AI industry, timely delivery of advanced models is critical not only for product leadership but also for maintaining investor trust. The market’s swift reaction to delays signals that leadership in AI development remains a key driver of company valuation, with delays risking significant financial repercussions.

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Google’s AI Development Timeline and Market Expectations

Google announced in May 2026 that Gemini 3.5 Pro would be released in June, aligning with its broader strategy to maintain AI leadership. However, internal challenges—particularly in coding capabilities—have caused repeated delays. The model’s postponement follows a pattern seen in the competitive landscape, where companies like OpenAI and Anthropic have accelerated their AI releases, often with open-weight models that ship more quickly and at lower cost.

Prior to these delays, Google’s AI efforts were viewed as industry-leading, with strong financials in Q1 2026. Yet, the absence of a flagship model during a period of rapid AI advancements has led to a reassessment of Google’s position among competitors. The departure of DeepMind researchers for rivals further complicated the company’s development timeline, intensifying market concerns about Google’s ability to meet its own promises for 2026.

As of now, multiple deadlines have passed without the flagship launch, and the specifics of the model’s current state remain unconfirmed, with reports of internal rebuilds and reliability issues circulating but unverified.

“Google’s Gemini 3.5 Pro is months behind schedule, primarily over efforts to improve its coding capabilities, with disappointing results from recent training updates.”

— Bloomberg, Julia Love and Davey Alba

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Unconfirmed Details and Ongoing Developments

Many specifics about Gemini 3.5 Pro remain unconfirmed, including its current technical status, exact capabilities, and the reasons behind the delays. Reports of internal rebuilds, reliability issues, and the model’s specifications are based on anonymous sources and third-party observations, not official confirmation from Google. The timeline for its release remains uncertain, with multiple deadlines missed and no new official date announced.

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Next Steps in Google’s AI Strategy and Market Expectations

Google is likely to provide updates on Gemini 3.5 Pro’s development and release schedule in upcoming earnings calls or developer briefings. The company may also focus on releasing interim models or updates, such as the Gemini Flash, which is already available. Market watchers will monitor whether Google can regain investor confidence through timely launches or if delays will continue to impact its valuation and competitive standing in AI.

Additionally, the AI industry as a whole will observe how Google addresses technical challenges and whether it accelerates efforts to catch up with or surpass competitors like OpenAI and Anthropic.

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Key Questions

Why has Google delayed the Gemini 3.5 Pro model?

According to reports, the delay is primarily due to challenges in improving the model’s coding capabilities and reliability issues, including hallucination rates, which have required internal rebuilds and further testing. Google has not officially confirmed these reasons.

How much financial impact has the delay caused?

The delay has resulted in an estimated $425 billion loss in market value for Alphabet, driven by stock selloffs following reports of setbacks and missed deadlines.

What are the implications for Google’s AI leadership?

The delays have temporarily weakened Google’s position in the AI race, especially as competitors release open-weight models and accelerate their development timelines. The situation underscores the importance of timely flagship launches for maintaining market dominance.

Is there a possibility that Google will still meet its 2026 AI goals?

While possible, the repeated delays and technical challenges suggest that meeting the original timeline is uncertain. The company may need to adjust expectations or accelerate interim releases to stay competitive.

Source: ThorstenMeyerAI.com

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