tokevenGeminivsGrok
Gemini Robotics ER 2 vs Grok 4.5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Gemini Robotics ER 2
Fast / BudgetGrok 4.5
FlagshipInput $/MTok
$1.00
$2.00
Output $/MTok
$5.00
$6.00
Cache discount
90% off
85% off
Context
131.072K
500K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
Gemini Robotics ER 2
Grok 4.5
Guidance
When to use Gemini Robotics ER 2 vs Grok 4.5
Choose Gemini Robotics ER 2 when...
- -Cost matters: 50% cheaper on input tokens
Choose Grok 4.5 when...
- -You need a larger context window (500K vs 131.072K)
- Similar performance; consider provider preference or ecosystem fit.
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Gemini Robotics ER 2
Grok 4.5
100K tokens
$0.22Cheaper
$0.32
1M tokens
$2.20Cheaper
$6.40
10M tokens
$22.00Cheaper
$64.00
FAQ
When should I use Gemini Robotics ER 2 instead of Grok 4.5?
Gemini Robotics ER 2 and Grok 4.5 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Grok 4.5 cheaper than Gemini Robotics ER 2?
Grok 4.5 input costs $2.00/MTok, which is 100% more than Gemini Robotics ER 2 at $1.00/MTok.
What are the context window sizes for Gemini Robotics ER 2 and Grok 4.5?
Gemini Robotics ER 2 has a 131.072K token context window. Grok 4.5 has a 500K token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How Gemini Robotics ER 2 and Grok 4.5 stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.