Gemini 3.1 Pro is the best AI for summarizing PDFs because it handles long documents and multi-source synthesis more comfortably than the smaller, faster models.
The shortest way to see the safest default, the lower-cost option, and the specialist pick before you read deeper.
Gemini 3.1 Pro is the safest overall answer here when you want the strongest default instead of the lowest list price.
Switch the scoring lens to see whether the top answer changes when you care more about cost, speed, or long-document work.
Google / Premium / Mar 23, 2026
Best for research and deep document analysis — 2M context at the best premium price.
Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.
Your primary use case is writing quality or agentic coding — Claude wins both.
The fastest way to see where the recommendation shifts when your priority changes.
2M token context window — the largest of any frontier model
Leads ARC-AGI-2 reasoning benchmark at 77.1%
Best price-to-performance among premium models at $2/$12 per 1M tokens
Slower than Flash for everyday lightweight tasks
Claude Sonnet 4.6 is better for writing quality
UseRightAI recommendations are based on practical decision factors people actually feel in day-to-day use.
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The top-ranked model in this directory changes as new models launch and prices shift. Check the recommendation at the top of this page for the current best pick.
The best coding model in this directory is ranked by SWE-bench score and real-world developer adoption. The current #1 is shown at the top of our coding comparison pages.
The cheapest capable AI model changes as providers adjust pricing. Check our cheapest AI comparison page for the current lowest-cost option per million tokens.
The fastest models in the directory are ranked by speed score. Check our fastest AI page for the current top picks by latency and throughput.
Most businesses get the best results pairing one premium model for quality work with one budget model for volume — rather than forcing a single model to do everything.
Google: Gemma 2 9B is the lower-cost option to start with when you still need useful output at scale.
Gemini 3.1 Flash is the better pick when response speed matters more than maximum reasoning depth.
Gemini 3.1 Pro is the best long-document summarizer in the current directory.
GPT-5.4 is a better pick when the output must include higher-quality reasoning, not just compression.
Gemini 3.1 Flash is the better budget option for lighter document workloads.
Use Pro for long PDFs, multi-file synthesis, and knowledge-heavy reviews.
Use GPT for higher-confidence interpretation and harder analytical takeaways.
Use Flash when you need speed and lower cost more than maximum long-context depth.
