Model Comparator

Compare up to four models using the same criteria.

Claude Sonnet 5 (Max)
Anthropic
Grok 4.5 (High)
SpaceXSI

Differences only

✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.

Model Comparator
Metrics	Claude Sonnet 5 (Max) Anthropic	Grok 4.5 (High) SpaceXSI
Intelligence	38.2	Best: 38.8
Coding	71.5	Best: 72.4
Agentic	Best: 43.6	41.2
Speed	Best: 75.6 t/s	57.6 t/s
TTFT	218 s	Best: 13.3 s
Input · $ / 1M tokens	$2	$2
Output · $ / 1M tokens	$10×1.7 relative to the lowest price among the compared models	Best: $6
Context window	1M	1M
Reasoning	Yes	Yes
Open weights	No	No
Cost / task	$5.09×6.7 relative to the lowest price among the compared models	Best: $0.76

Intelligence

Claude Sonnet 5 (Max): 38.2
Grok 4.5 (High): Best: 38.8

Coding

Claude Sonnet 5 (Max): 71.5
Grok 4.5 (High): Best: 72.4

Agentic

Claude Sonnet 5 (Max): Best: 43.6
Grok 4.5 (High): 41.2

Speed

Claude Sonnet 5 (Max): Best: 75.6 t/s
Grok 4.5 (High): 57.6 t/s

TTFT

Claude Sonnet 5 (Max): 218 s
Grok 4.5 (High): Best: 13.3 s

Input · $ / 1M tokens

Claude Sonnet 5 (Max): $2
Grok 4.5 (High): $2

Output · $ / 1M tokens

Claude Sonnet 5 (Max): $10×1.7 relative to the lowest price among the compared models
Grok 4.5 (High): Best: $6

Context window

Claude Sonnet 5 (Max): 1M
Grok 4.5 (High): 1M

Reasoning

Claude Sonnet 5 (Max): Yes
Grok 4.5 (High): Yes

Open weights

Claude Sonnet 5 (Max): No
Grok 4.5 (High): No

Cost / task

Claude Sonnet 5 (Max): $5.09×6.7 relative to the lowest price among the compared models
Grok 4.5 (High): Best: $0.76

Each reasoning level remains a separate configuration.

Score and cost

Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.

Claude Sonnet 5 (Max)38.2 · $5.09
Grok 4.5 (High)38.8 · $0.76