Compare AI models

API pricing
Input price
—$2.00
Output price
—$6.00
Cached input price
—$0.30
Cheapest input
—$2.00xAI
Cheapest output
—$6.00xAI
Benchmarks
SWE-Bench Pro
54%64.7%
SWE-Bench Multilingual
79.8%78%
DeepSWE 1.0
18%62%
Next.js Evals
81%65%
Terminal-Bench 2.1
73%83.3%
Overview
CompanySpaceXAISpaceXAI
Release dateMay 18 2026Jul 8 2026
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Grok 4.5 leads Composer 2.5 on 3 of the 5 benchmarks they both report. Only Grok 4.5 has a verified first-party API price: $2.00 per million input tokens and $6.00 per million output tokens. No pay-as-you-go API rate is tracked for Composer 2.5. Composer 2.5 shipped 51 days before Grok 4.5, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

On SWE-Bench Pro, Grok 4.5 leads at 64.7% vs Composer 2.5 at 54%. On SWE-Bench Multilingual, Composer 2.5 leads at 79.8% vs Grok 4.5 at 78%. On DeepSWE 1.0, Grok 4.5 leads at 62% vs Composer 2.5 at 18%. On Next.js Evals, Composer 2.5 leads at 81% vs Grok 4.5 at 65%. On Terminal-Bench 2.1, Grok 4.5 leads at 83.3% vs Composer 2.5 at 73%.