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.

Perceptron Mk1.5Perceptron Remove
Grok 4.7SpaceXAI Remove
S2 ProFish Audio Remove
Transcribe 1 ProFish Audio Remove

4 is the maximum. Remove one to add another.

perceptron-mk1.5 vs grok-4.7 vs s2-pro vs transcribe-1-pro
Attribute	Perceptron Mk1.5perceptron-mk1.5	Grok 4.7grok-4.7	S2 Pros2-pro	Transcribe 1 Protranscribe-1-pro
Pricing
Input	$0.15 / 1M	$1.60 / 1M	$0 / 1M	$0 / 1M
Output	$1.50 / 1M	$4.80 / 1M	$0 / 1M	$0 / 1M
Cache Write (5m)	$0.15 / 1M	$1.60 / 1M	Not applicable	Not applicable
Cache Write (1h)	$0.15 / 1M	$1.60 / 1M	Not applicable	Not applicable
Cache Read	$0.15 / 1M	$1.60 / 1M	Not applicable	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	36.9K	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	Yes	Yes	No	No
Catalogue
Provider	Perceptron	SpaceXAI	Fish Audio	Fish Audio
Category	chat	chat	voice	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	2026-09-25	—	2026-07-29	2026-09-24
Description
Summary	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.	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.	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.