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.

Grok 4.7SpaceXAI Remove
Claude Fable 5.1Anthropic Remove
GPT-6 LunaOpenAI Remove
Claude Opus 5.5Anthropic Remove

4 is the maximum. Remove one to add another.

grok-4.7 vs claude-fable-5.1 vs gpt-6-luna vs claude-opus-5.5
Attribute	Grok 4.7grok-4.7	Claude Fable 5.1claude-fable-5.1	GPT-6 Lunagpt-6-luna	Claude Opus 5.5claude-opus-5.5
Pricing
Input	$1.60 / 1M	$10.00 / 1M	$0.10 / 1M	$4.00 / 1M
Output	$4.80 / 1M	$50.00 / 1M	$0.50 / 1M	$20.00 / 1M
Cache Write (5m)	$1.60 / 1M	$12.50 / 1M	$0.10 / 1M	$5.00 / 1M
Cache Write (1h)	$1.60 / 1M	$20.00 / 1M	$0.10 / 1M	$8.00 / 1M
Cache Read	$1.60 / 1M	$1.00 / 1M	$0.10 / 1M	$0.40 / 1M
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	500K	1M	1.1M	1M
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	Yes	Yes	Yes
Function Calling	Yes	Yes	Yes	Yes
JSON Mode	Yes	Yes	Yes	Yes
Streaming	Yes	Yes	Yes	Yes
Catalogue
Provider	SpaceXAI	Anthropic	OpenAI	Anthropic
Category	chat	chat	chat	chat
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	—	—	—	—
Description
Summary	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.	Claude Fable 5.1 is an upgraded version of Fable 5, delivering broad improvements with particularly strong gains in agentic coding, long-running workflows, and professional knowledge work. It excels at large code refactors, front-end and visual code generation, financial analysis, and complex analytical tasks. Compared with Fable 5, it also produces more concise plans and summaries while maintaining strong performance across extended tasks, making it a natural upgrade for existing Fable workflows and a strong option alongside Opus 5 for reasoning-intensive applications.	GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, optimized for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic tasks. It combines low-cost, responsive inference with the GPT-6 family’s improvements in factual reliability and clear, concise communication. At higher reasoning effort, GPT-6 Luna can also handle complex software engineering and computer-use workflows that previously required a Sol-tier model, making it a versatile choice for scalable production applications that need to balance speed, cost, and capability.	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.