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Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not exposed, reasoning cannot be disabled, and the reasoning effort cannot be specified. Pricing increases once the total tokens in a given request is greater than 128k tokens. See more details on the [xAI docs](https://docs.x.ai/docs/models/grok-4-0709)
Quality Index
41.5
38th of 444
Top 9%
Coding Index
40.5
26th of 354
Top 7%
Math Index
92.7
15th of 268
Top 6%
Price/1M
$6.00
634th cheapest
1900% above median
Top 96%
Speed
45 tok/s
Top 51%
TTFT
8.42s
Context Window
256K
91st largest
Top 29%
Input
$3.00
per 1M tokens
Output
$15.00
per 1M tokens
Blended
$6.00
per 1M tokens
Cheaper than 4% of models. Median price is $0.30/1M tokens.
Daily
$6.00
Monthly
$180.00
45
tokens/sec
Faster than 49% of models
8.42
seconds
Faster than 7% of models
8.42
seconds
Faster than 22% of models
Market Median
45 tok/s
1% slower
Median TTFT
0.42s
1913% slower
Throughput/Dollar
7
tok/s per $/1M
Speed Comparison
Context Window
256K
tokens
Larger than 71% of models