Overview
Model specifications
- Context
- 2,000,000 tokens
- Maximum output
- 1,800,000 tokens
- Architecture
- text+image+file->text
- Tokenizer
- Grok
- Knowledge cutoff
- 2025-09-01
- Moderated
- No
OPENROUTER
Complete pricing
Synchronized OpenRouter rates. Token prices are shown per one million tokens.
- Input
- $1.25 /M tokens
- ≤200K$1.25
- >200K$2.5
- Output
- $2.5 /M tokens
- ≤200K$2.5
- >200K$5
- Cache read
- $0.2 /M tokens
- ≤200K$0.2
- >200K$0.4
- Web search
- $5 /1K calls
API
Model configuration
Reasoning
- Moderated
- No
- Default parameters
- No
API
Quick start
Call this exact model ID through OpenRouter’s OpenAI-compatible API.
curl https://openrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"x-ai/grok-4.20","messages":[{"role":"user","content":"Hello!"}]}'Capabilities
Input → Output
Input
textimagefile
Output
text
Reasoning
No
API
Supported API parameters
include_reasoninglogprobsmax_tokensreasoningresponse_formatseedstructured_outputstemperaturetool_choicetoolstop_logprobstop_pAvailable providers
4 providers
Live providers on OpenRouter
OpenRouter Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.
xAI
unknown- Context
- 2M
- Maximum output
- 1.8M
- Input
- $1.25
- Output
- $2.50
- Cache read
- $0.200
- Cache write
- Not provided
xAI
unknown- Context
- 2M
- Maximum output
- 1.8M
- Input
- $1.25
- Output
- $2.50
- Cache read
- $0.200
- Cache write
- Not provided
xAI
unknown- Context
- 2M
- Maximum output
- 1.8M
- Input
- $2.50
- Output
- $5.00
- Cache read
- $0.400
- Cache write
- Not provided
xAI
unknown- Context
- 2M
- Maximum output
- 1.8M
- Input
- $2.50
- Output
- $5.00
- Cache read
- $0.400
- Cache write
- Not provided