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-6.1 TerraOpenAI Remove
Gemini 4 ArgonGoogle Remove
Claude Fable 5.2Anthropic Remove
S1Fish Audio Remove

4 is the maximum. Remove one to add another.

gpt-6.1-terra vs gemini-4-argon vs claude-fable-5.2 vs s1
Attribute	GPT-6.1 Terragpt-6.1-terra	Gemini 4 Argongemini-4-argon	Claude Fable 5.2claude-fable-5.2	S1s1
Pricing
Input	$1.00 / 1M	$2.00 / 1M	$8.00 / 1M	— Not priced per input token
Output	$5.00 / 1M	$10.00 / 1M	$40.00 / 1M	— Not priced per output token
Cache Write (5m)	$1.00 / 1M	$2.00 / 1M	$10.00 / 1M	Not applicable
Cache Write (1h)	$1.00 / 1M	$2.00 / 1M	$16.00 / 1M	Not applicable
Cache Read	$1.00 / 1M	$2.00 / 1M	$0.20 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1M	1M	1M	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	Yes	Yes	No
Function Calling	Yes	Yes	Yes	No
JSON Mode	Yes	Yes	Yes	No
Streaming	No	Yes	Yes	No
Catalogue
Provider	OpenAI	Google	Anthropic	Fish Audio
Category	chat	chat	chat	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	—	—	—	2026-07-29
Description
Summary	GPT-6.1 Terra is OpenAI’s mid-tier model in the GPT-6.1 series, designed to balance capability, speed, and cost efficiency. Positioned below GPT-6.1 Sol, it delivers strong performance across everyday agentic workflows, coding, and professional writing, with particular strengths in screenshot understanding and on-screen content analysis. Optimized for high-volume production workloads, GPT-6.1 Terra is well suited for coding assistants, visual interface analysis, workflow automation, and scalable agentic applications that require reliable performance at an accessible cost.	Gemini 4 Argon is Google's flagship reasoning model, built for complex software engineering, deep mathematical and scientific problem solving, and autonomous multi-step agents. Google trained it to keep context across long, multi-step tasks and to turn long documents mixing text, tables, charts and images into a single grounded output. It leads the Vals Index across finance, legal, coding and tax work, and supports long decode of up to 1M output tokens in a single response.	Claude Fable 5.2 is Anthropic's most capable model for advanced technical work and open-ended problem solving, delivering significant improvements in coding, reasoning, and vision over Fable 5.1. It excels at exceptionally complex tasks, including large-scale software migrations, electronic system design, and advanced scientific and mathematical research. With up to 30% faster output generation, clearer communication, and always-on adaptive extended thinking, Fable 5.2 supports configurable reasoning effort from low to max (default high), with thinking preserved across turns. Designed for frontier engineering, scientific discovery, and ambitious long-horizon agentic workflows, it complements Opus 5.5 as a specialized option for the most demanding technical challenges.	Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.