GPT-6 Luna vs Gemini 3.8 Flash
Compare GPT-6 Luna and Gemini 3.8 Flash side-by-side. See comparisons of price, response speed, accuracy, and file support to choose the best model for your task.
Overview
GPT-6 Luna vs Gemini 3.8 Flash Overview
Everything you need to know about these AI models, including capabilities, performance, pricing, and technical details.
OpenAI / GPT-6 Luna
maxDescription
OpenAI's most efficient GPT-6 model, built for focused, high-volume work. Luna handles extraction, summarisation, classification, and other well-defined tasks that run thousands of times a day, at a price low enough to rival open models. It reads text and images, shares the family's very large context, and OpenAI reports it matches the previous flagship on factuality at a fraction of the cost. Its knowledge is the most recent in the family.
Google / Gemini 3.8 Flash
proDescription
Google's most intelligent Flash-tier model, built on 3.7 Flash and tuned to work harder per task. Gemini 3.8 Flash pushes further into software engineering and agentic knowledge work, taking more reasoning steps and calling tools iteratively rather than answering in a single pass. It reads text, images, audio, video, and PDFs across a very large context, grounded in live search, and its knowledge is among the most recent in the catalog.
About
About
Capabilities
Capabilities
Comparison
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OpenAI / GPT-6 Luna
maxHigh-Volume Coding Tasks
Built for small, well-scoped coding jobs and as a fast sub-agent in larger systems. OpenAI reports it landing close behind Sol on coding benchmarks while costing a fraction as much per task.
Effort From Off To Max
Reasoning effort runs from none through max, defaulting to medium. Keep it off for the fastest, cheapest responses on simple work, or raise it when a task needs more care, without changing models.
Room For Long Inputs
The same very large context window as the larger GPT-6 models. Big enough to summarise long documents or classify large batches in one pass, unusual capacity at this price.
Extraction And Summarisation
OpenAI names field extraction, ticket summarisation, and classification among its core uses. Built to process high volumes of structured text quickly and cheaply rather than write long-form content.
Web Search And Recent Knowledge
Supports web search and tools, and carries the most recent knowledge cutoff in the family. Together, those keep it current on live questions despite its budget positioning.
Text And Image Input
Reads text and images in the same prompt, so you can send screenshots or scanned pages alongside your question. Output is text only. Audio and video are not supported.
Google / Gemini 3.8 Flash
proDiligent Agentic Coding
Google reports gains of over 3.7 Flash in software engineering and agent workflows. At higher effort, it takes extra reasoning steps and iteratively calls tools, navigating roadblocks rather than answering in a single pass.
Effort You Set
Three thinking levels, low, medium, and high, defaulting to medium, trading reasoning depth against cost and latency. Deep thinking is on by default, so lower the level for latency-sensitive work.
Room For Repositories
A very large context window, carried over from the Flash line. Load a full repository, a long document set, or hours of media in one request and work across it without chunking.
Knowledge Work At Scale
Google reports gains in long-horizon and enterprise knowledge work alongside coding. Suited to document-heavy workflows over large, mixed source material, with iterative tool use built in.
Search And Recent Knowledge
Its knowledge is among the most recent in the catalog, and it supports search grounding. Google notes coverage varies by domain, so live search still matters for the newest information.
Text Image Audio Video
Google's model card lists text, images, audio, video, and PDFs as input. Output is text. Among the broadest input ranges available, and unusual in handling both audio and video.
Why Aymo
Why chat with GPT-6 Luna and Gemini 3.8 Flash on Aymo AI?
Aymo gives you more than access to GPT-6 Luna and Gemini 3.8 Flash—it provides a complete multi-model AI workspace designed for productivity.
Compare Responses
See how GPT-6 Luna and Gemini 3.8 Flash performs alongside Claude, Gemini, Grok, and other leading AI models.
One Workspace
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Switch Models Instantly
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Upload Once
Use the same files across multiple AI models without uploading them again.
Save & Organize
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Work Together
Share conversations and collaborate with teammates in one place.