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.

S2 ProFish Audio Remove
Grok 4.7SpaceXAI Remove
Universal-3.5 ProAssemblyAI Remove
Gemini 3.5 TranscribeGoogle Remove

4 is the maximum. Remove one to add another.

s2-pro vs grok-4.7 vs universal-3-5-pro vs gemini-3.5-transcribe
Attribute	S2 Pros2-pro	Grok 4.7grok-4.7	Universal-3.5 Prouniversal-3-5-pro	Gemini 3.5 Transcribegemini-3.5-transcribe
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	98.3K
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	No	Yes	No	Yes
Function Calling	No	Yes	No	Yes
JSON Mode	No	Yes	No	No
Streaming	No	Yes	No	No
Catalogue
Provider	Fish Audio	SpaceXAI	AssemblyAI	Google
Category	voice	chat	voice	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	2026-07-29	—	2026-09-22	2026-09-25
Description
Summary	Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.	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.	Google Gemini 3.5 Transcribe speech-to-text. Billed per input and output token.