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A continuously updated, source-attributed map of the global AI ecosystem. Every number links back to its source, tier and observation time; history is never discarded.

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© 2026 Simon-Pierre Boucher · AI Atlas. Data is aggregated from public sources and attributed on every page.

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Model Timeline

Timeline of gpt-5.5-pro

Every recorded change for this model by OpenAI, newest first. Back to the entity page →

2 events

Year

Category · events in the last 365 days

All categories Benchmarks4,624 Models2,116 Companies1,599 Research1,103 Releases1,016 Providers & pricing640 Datasets145 Frameworks66 Hardware43 Repositories10 Pricing2

Filtered to one entity. Show the whole atlas

Sept 2026 2

11 Sept 2026
Context window changedModelgpt-5.5-proOpenAI
gpt-5.5-pro: context length changed from 1050000 to 922000
Context window1.05M tokens→922K tokensartificial_analysis

artificialanalysis.ai

11 Sept 2026

New modelModelgpt-5.5-proOpenAI

New model: gpt-5.5-pro (OpenAI)

openai

developers.openai.com

Showing up to 400 events. Narrow by year or category, or use the changes feed for cursor-paged history. Times are UTC.