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.

Aura-2Deepgram Remove
Grok 4.7SpaceXAI Remove
Universal-3.5 ProAssemblyAI Remove
Transcribe 1 ProFish Audio Remove

4 is the maximum. Remove one to add another.

aura-2 vs grok-4.7 vs universal-3-5-pro vs transcribe-1-pro
Attribute	Aura-2aura-2	Grok 4.7grok-4.7	Universal-3.5 Prouniversal-3-5-pro	Transcribe 1 Protranscribe-1-pro
Pricing
Input	$0 / 1M	$1.60 / 1M	$0 / 1M	$0 / 1M
Output	$0 / 1M	$4.80 / 1M	$0 / 1M	$0 / 1M
Cache Write (5m)	Not applicable	$1.60 / 1M	Not applicable	Not applicable
Cache Write (1h)	Not applicable	$1.60 / 1M	Not applicable	Not applicable
Cache Read	Not applicable	$1.60 / 1M	Not applicable	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	N/A	500K	N/A	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	No	Yes	No	No
Function Calling	No	Yes	No	No
JSON Mode	No	Yes	No	No
Streaming	No	Yes	No	No
Catalogue
Provider	Deepgram	SpaceXAI	AssemblyAI	Fish Audio
Category	voice	chat	voice	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	2026-07-16	—	2026-09-22	2026-09-24
Description
Summary	Deepgram Aura-2 text-to-speech for real-time voice applications. Billed per input character.	Grok 4.7 is SpaceXAI's flagship model for coding, agentic workflows, and professional knowledge work, succeeding Grok 4.6. It is particularly strong at long-running software engineering, self-verification, and long-context execution, while improving capabilities in document drafting, presentations, and other professional tasks. Trained with extended reinforcement learning focused on multi-hour problems, Grok 4.7 is optimized for sustained, complex task execution and natively supports the Grok Bot harness for conversational workflows. It also introduces an enhanced safeguard stack designed to combine strong jailbreak resistance with low refusal rates for legitimate technical work. Reported benchmark results use xhigh reasoning effort.	AssemblyAI Universal-3.5 Pro speech-to-text. Billed per second of audio.	Fish Audio Transcribe 1 Pro speech-to-text with speaker labels; transcripts include speaker tags such as <\|speaker:0\|>. Billed per second of audio.