TL;DR
Google’s delayed Gemini 3.5 Pro AI model has caused a $425 billion decline in market value, reflecting investor concern over the company’s AI development setbacks. The model’s launch has been repeatedly postponed, impacting market confidence.
Google’s highly anticipated Gemini 3.5 Pro AI model has not yet launched, despite multiple promised deadlines, leading to a $425 billion decline in the company’s market capitalization.
This delay, confirmed by multiple reports, reflects significant internal challenges and has caused investor confidence to plummet, making it a critical development in the AI industry and for Google’s market standing.
On May 19, 2026, Google announced at I/O that Gemini 3.5 Pro would be released in June. However, as of mid-July, the model remains unreleased, with sources reporting that it is months behind schedule due to difficulties in improving its coding capabilities, an area where competitors like OpenAI and Anthropic have gained an advantage.
Bloomberg reported on July 16 that Google is conducting a rebuild of the model on a native Gemini 3 foundation after disappointing results from recent training data updates. Google has not publicly confirmed these internal issues or the rebuild process.
Following the report, Google’s stock fell by 4.4%, wiping approximately $200 billion from its market value in one day, adding to a prior $225 billion decline in late June caused by the departure of DeepMind researchers to competitors. Overall, the company has lost an estimated $425 billion in market capitalization in less than a month, despite stable financials, including $109.9 billion in revenue and a 63% increase in Google Cloud revenue.
While unconfirmed reports suggest DeepMind is discarding nearly-ready models and restarting pre-training, Google has not issued any official statements. The delays have also impacted other AI projects, with competitors releasing new models and open-weight AI systems shipping regularly, intensifying the pressure on Google to deliver.
Implications of the AI Development Delays for Google
The delay of Gemini 3.5 Pro highlights the risks of ambitious AI development timelines in a competitive landscape where market confidence is highly sensitive to progress. The $425 billion loss demonstrates how investor sentiment and market valuation are directly influenced by perceived innovation pace, even when financial fundamentals remain stable.
This situation underscores the importance of timely product launches in maintaining a company’s leadership position in AI, as delays can lead to a significant revaluation and loss of market share to competitors with more aggressive or faster deployment strategies.
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Recent Market Reactions and Industry Competition
In the weeks surrounding the delays, Google experienced a sharp decline in market value, with its stock dropping by 4.4% after Bloomberg’s report on July 16. This followed a $225 billion selloff in late June linked to the departure of senior DeepMind researchers to firms like Anthropic and OpenAI.
Despite these setbacks, Google’s core financials remain strong, with Q1 2026 revenues of nearly $110 billion and a 63% growth in Google Cloud. Meanwhile, competitors like OpenAI and Anthropic have launched new models, such as GPT-5.6 Sol and Grok 4.5, which are already available to the public.
The ongoing delays place Google at a disadvantage, as other labs release operational models that are gaining market share and setting new benchmarks, while Google’s flagship AI remains unreleased and unconfirmed.
“Google is months behind schedule on Gemini 3.5 Pro, primarily over efforts to improve coding capabilities, with recent training data updates producing disappointing results.”
— Bloomberg, Julia Love and Davey Alba
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Unconfirmed Details and Internal Challenges
It is not yet clear whether Google is actively rebuilding the model on a native Gemini 3 foundation or discarding near-ready versions, as reports of a restart remain unconfirmed. The specifics of the internal technical issues, such as reliability problems or hallucination rates, are also not publicly verified.
Additionally, the exact timing of the Gemini 3.5 Pro release remains uncertain, with multiple deadlines passing without delivery and no official updates from Google.
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Expected Developments and Market Impact
Google is likely to continue internal efforts to resolve technical issues and may announce a new timeline for Gemini 3.5 Pro’s release in upcoming months. Market reactions will depend on whether Google can deliver a reliable, competitive product soon, or if delays persist.
Investors and industry observers will closely watch Google’s next moves, including potential product announcements, official updates, and how competitors’ new models influence the AI landscape in the second half of 2026.
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Key Questions
Why did Google’s Gemini 3.5 Pro delay cause such a large market drop?
The delay signaled internal challenges and raised concerns about Google’s ability to maintain its leadership in AI, leading investors to reprice the company’s valuation downward by approximately $425 billion.
Are the delays due to technical issues or strategic decisions?
Reports suggest technical difficulties, especially in coding capabilities and reliability, are the main causes. Google has not publicly confirmed these issues, so some uncertainty remains.
Will Google recover its market value once the model launches?
Potentially, a successful and reliable launch could restore confidence and market value, but it depends on the quality of the product and competitive dynamics at the time.
How does this delay compare to other AI project timelines?
Delays are common in AI development, but the scale of Google’s market cap loss underscores how sensitive the market is to flagship product timelines in this sector.
What are competitors releasing during this delay?
Competitors like OpenAI and Anthropic have launched models such as GPT-5.6 Sol and Grok 4.5, which are already available to the public, increasing competitive pressure on Google.
Source: ThorstenMeyerAI.com
