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Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

Gemini 2.5 Flash Preview (thinking)Google Remove
GPT-6 LunaOpenAI Remove
Universal-3.5 ProAssemblyAI Remove

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gemini-2.5-flash-preview:thinking vs gpt-6-luna vs universal-3-5-pro
Attribute	Gemini 2.5 Flash Preview (thinking)gemini-2.5-flash-preview:thinking	GPT-6 Lunagpt-6-luna	Universal-3.5 Prouniversal-3-5-pro
Pricing
Input	$0.075 / 1M	$0.10 / 1M	— Not priced per input token
Output	$1.75 / 1M	$0.50 / 1M	— Not priced per output token
Cache Write (5m)	$0.075 / 1M	$0.10 / 1M	Not applicable
Cache Write (1h)	$0.075 / 1M	$0.10 / 1M	Not applicable
Cache Read	$0.075 / 1M	$0.10 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1.0M	1.1M	N/A
Max output	N/A	N/A	N/A
Capabilities
Vision	Yes	Yes	No
Function Calling	Yes	Yes	No
JSON Mode	Yes	Yes	No
Streaming	Yes	Yes	No
Catalogue
Provider	Google	OpenAI	AssemblyAI
Category	chat	chat	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go
Released	—	—	2026-09-22
Description
Summary	Gemini 2.5 Flash Preview (May 2025) is Google's high-performance general model built for advanced reasoning, coding, math, and science. It includes built-in “thinking” features to deliver more accurate, context-aware answers.	GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, optimized for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic tasks. It combines low-cost, responsive inference with the GPT-6 family’s improvements in factual reliability and clear, concise communication. At higher reasoning effort, GPT-6 Luna can also handle complex software engineering and computer-use workflows that previously required a Sol-tier model, making it a versatile choice for scalable production applications that need to balance speed, cost, and capability.	AssemblyAI Universal-3.5 Pro speech-to-text. Billed per second of audio.