OpenRouter
Catalog quote- Input
- $1.25
- Output
- $2.50
- Cached input
- $0.20
x-aiListed Mar 31, 2026
SpaceXAI: Grok 4.20
Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
Context window2M
Max output1.8M
Provider endpoints6
Benchmark results0
Measured performance
All leaderboards ↗Benchmark results
No published results in this index yet
Scores appear here when an evaluation matches this exact model.
Access & cost
10 quotesPrices across providers
Your token mix
USD · listed token ratesExperiential
Standard list rate
- Input
- $1.25
- Output
- $2.50
- Cached input
- $0.20
Catalog list rate. Plan allowances and temporary discounts are separate.
- Input
- $1.25
- Output
- $2.50
- Cached input
- $0.20
Web search $0.005/search
- Input
- $2.50
- Output
- $5.00
- Cached input
- $0.40
Web search $0.005/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $1.25
- Output
- $2.50
- Cached input
- $0.20
Web search $0.005/search
- Input
- $2.50
- Output
- $5.00
- Cached input
- $0.40
Web search $0.005/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $2.50
- Output
- $5.00
- Cached input
- $0.40
Web search $0.005/search
xAI
via OpenRouterxai/zdr/priority · tier=priority · prompt over 200000 tokens · rate option 1
Conditional rate- Input
- $5.00
- Output
- $10.00
- Cached input
- $0.80
Web search $0.005/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $2.50
- Output
- $5.00
- Cached input
- $0.40
Web search $0.005/search
xAI
via OpenRouterxai/priority · tier=priority · prompt over 200000 tokens · rate option 1
Conditional rate- Input
- $5.00
- Output
- $10.00
- Cached input
- $0.80
Web search $0.005/search · A rate applies when all its listed conditions match. Dates and times use UTC.
Model specifications
- Developer
- x-ai
- Modality
- Language
- Context
- 2,000,000 tokens
- Maximum output
- 1,800,000 tokens
- Weights
- Not reported
- Provider listed
- Mar 31, 2026
- First discovered
- Oct 16, 2026
Exact identities
- openrouter
x-ai/grok-4.20 - experiential
grok-4.20
Sources
Updated Oct 20, 2026
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