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
Claude Opus 5.5Anthropic Remove
Transcribe 1 ProFish Audio Remove
GPT-6.1 SolOpenAI Remove

4 is the maximum. Remove one to add another.

perceptron-mk1.5 vs claude-opus-5.5 vs transcribe-1-pro vs gpt-6.1-sol
Attribute	Perceptron Mk1.5perceptron-mk1.5	Claude Opus 5.5claude-opus-5.5	Transcribe 1 Protranscribe-1-pro	GPT-6.1 Solgpt-6.1-sol
Pricing
Input	$0.15 / 1M	$4.00 / 1M	$0 / 1M	$2.00 / 1M
Output	$1.50 / 1M	$20.00 / 1M	$0 / 1M	$10.00 / 1M
Cache Write (5m)	$0.15 / 1M	$5.00 / 1M	Not applicable	$2.00 / 1M
Cache Write (1h)	$0.15 / 1M	$8.00 / 1M	Not applicable	$2.00 / 1M
Cache Read	$0.15 / 1M	$0.40 / 1M	Not applicable	$2.00 / 1M
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	36.9K	1M	N/A	1M
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	Yes
Streaming	Yes	Yes	No	Yes
Catalogue
Provider	Perceptron	Anthropic	Fish Audio	OpenAI
Category	chat	chat	voice	chat
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	2026-09-25	—	2026-09-24	—
Description
Summary	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.	Claude Opus 5.5 is Anthropic's flagship model for advanced reasoning, coding, and long-horizon agentic workflows, succeeding Opus 5. It excels at multi-step changes across large codebases, code review and bug detection, financial and scientific analysis, and understanding dense charts, diagrams, and screenshots, with stronger grounding when reporting figures and citing sources. Compared with Opus 5, it completes comparable tasks with fewer steps and lower token usage while providing clearer, more concise progress reporting. With adaptive thinking and configurable effort levels, Opus 5.5 can balance reasoning depth, latency, and cost, making it well suited for both demanding autonomous workflows and latency-sensitive professional tasks.	Fish Audio Transcribe 1 Pro speech-to-text with speaker labels; transcripts include speaker tags such as <\|speaker:0\|>. Billed per second of audio.	GPT-6.1 Sol is an upgraded high-end model in OpenAI's GPT-6 series, positioned below the flagship GPT-6 Astra. It is optimized for agentic coding, computer use, document-heavy professional work, and multi-step business automation, delivering near-Astra-level capability at significantly lower cost. Compared with GPT-6 Sol, it offers improved factual reliability and stronger adherence to explicit constraints and user intent, making it well suited for complex, long-running agentic workflows where accurate and dependable execution is critical.