Compare models

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

GPT-6 AstraOpenAI Remove
Aura-2Deepgram Remove
S2 ProFish Audio Remove
Transcribe 1 ProFish Audio Remove

4 is the maximum. Remove one to add another.

gpt-6-astra vs aura-2 vs s2-pro vs transcribe-1-pro
Attribute	GPT-6 Astragpt-6-astra	Aura-2aura-2	S2 Pros2-pro	Transcribe 1 Protranscribe-1-pro
Pricing
Input	$10.00 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Output	$50.00 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Cache Write (5m)	$10.00 / 1M	Not applicable	Not applicable	Not applicable
Cache Write (1h)	$10.00 / 1M	Not applicable	Not applicable	Not applicable
Cache Read	$10.00 / 1M	Not applicable	Not applicable	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1M	N/A	N/A	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	No	No	No
Function Calling	Yes	No	No	No
JSON Mode	Yes	No	No	No
Streaming	Yes	No	No	No
Catalogue
Provider	OpenAI	Deepgram	Fish Audio	Fish Audio
Category	chat	voice	voice	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	—	2026-07-16	2026-07-29	2026-09-24
Description
Summary	GPT-6 Astra is OpenAI's flagship model for demanding end-to-end professional work, designed for advanced analysis, software engineering, deep research, scientific tasks, and document creation. It is particularly strong in long-horizon agentic workflows, including tasks that require sustained reasoning, tool orchestration, and computer and browser use, making it well suited for complex autonomous workflows and production-grade knowledge work.	Deepgram Aura-2 text-to-speech for real-time voice applications. Billed per input character.	Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.	Fish Audio Transcribe 1 Pro speech-to-text with speaker labels; transcripts include speaker tags such as <\|speaker:0\|>. Billed per second of audio.