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Specifications
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider.
1M128k
Overview
CompanyGoogleOpenAI
Release dateSep 24 2024Feb 12 2026
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Gemini 1.5 Flash-002 and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 1.5 Flash-002 shipped 506 days before GPT-5.3-Codex-Spark, so benchmark comparisons should account for the intervening progress.

Context windows are 1M (Gemini 1.5 Flash-002) vs 128k (GPT-5.3-Codex-Spark).

Direct benchmark comparisons are unavailable — Gemini 1.5 Flash-002 and GPT-5.3-Codex-Spark don't publish scores on any of the same benchmarks.