tokevenGPTvsGemini
GPT 5 Nano vs Gemini Robotics ER 2
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 5 Nano
Fast / BudgetGemini Robotics ER 2
Fast / BudgetInput $/MTok
$0.05
$1.00
Output $/MTok
$0.40
$5.00
Cache discount
90% off
90% off
Context
272K
131.072K
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
GPT 5 Nano
Gemini Robotics ER 2
Guidance
When to use GPT 5 Nano vs Gemini Robotics ER 2
Choose GPT 5 Nano when...
- -Cost matters: 95% cheaper on input tokens
- -You need a larger context window (272K vs 131.072K)
Choose Gemini Robotics ER 2 when...
- 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.
GPT 5 Nano
Gemini Robotics ER 2
100K tokens
$0.02Cheaper
$0.22
1M tokens
$0.15Cheaper
$2.20
10M tokens
$1.55Cheaper
$22.00
FAQ
When should I use GPT 5 Nano instead of Gemini Robotics ER 2?
GPT 5 Nano and Gemini Robotics ER 2 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Gemini Robotics ER 2 cheaper than GPT 5 Nano?
Gemini Robotics ER 2 input costs $1.00/MTok, which is 1900% more than GPT 5 Nano at $0.05/MTok.
What are the context window sizes for GPT 5 Nano and Gemini Robotics ER 2?
GPT 5 Nano has a 272K token context window. Gemini Robotics ER 2 has a 131.072K 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 GPT 5 Nano and Gemini Robotics ER 2 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.