readable AI benchmarks (simplified)
SpaceXAI
Grok 4 Fast (Reasoning)
Grok 4 Fast (Reasoning) has a Quality Score of 26.5, ranking 168th among 238 scored models. Per 1M tokens, pricing is $0.200 input and $0.500 output. It accepts text, image, audio, and video input, outputs text, and has a 2M token context window. Its Reliability Score is 35.0, ranking 185th among 245 scored models, below average (total average: 46.4).
Quality Score26.5coverage 100.0%: AA Intelligence and AA-Omniscience outcomes available
Value Scorenot available
Factual reliability35.0
Cache Discountnot available
Model specification
- Reasoning
- reasoning
- Input modalities
- text, image, audio, video
- Output modalities
- text
- Context window
- 2M tokens
- Weights
- closed weights
Token prices USD per 1M tokens
- Input
- $0.200
- Output
- $0.500
- Cached Input
- not available
- Cache write
- not available
- Cost per task
- not available
Capability
- Intelligence
- 17.9
- Omniscience (native net)
- -29.9
- Correct
- 22.8%
- Blended price
- not available
Answer outcomes
Fully graded outcomes (Correct + Incorrect): 75.5%
Correct 22.8%Incorrect 52.7%Partial / not attempted 24.5%
Artificial Analysis benchmarks legacy records
- Humanity’s Last Exam
- 19%
- GPQA Diamond
- 85%
- CritPt
- 3%
- AA-LCR
- 74%
Similar models
- Grok 4.1 Fast (Reasoning)SpaceXAIQuality Score 27.7Value Score not available
- Grok 4.3 (Low)SpaceXAIQuality Score 40.6Value Score 30.0
- Grok 4.3 (Medium)SpaceXAIQuality Score 41.6Value Score 30.7
- Grok Build 0.1 0616SpaceXAIQuality Score 40.2Value Score 30.3
- Grok 4.3 (Non-reasoning)SpaceXAIQuality Score 23.7Value Score 17.5
- Grok 4.20 0309 (Non-reasoning)SpaceXAIQuality Score 21.7Value Score 14.9