Best cell per row highlighted. Null means undisclosed — never counted as zero.
| Provider | xAI | xAI |
| Family / tier | Grok 4 · Flagship | Grok Build · Coder |
| Status | GA | GA |
| Released | 2026-09-21 | 2026-05-20 |
| Knowledge cutoff | 2026-05 | 2024-11 |
| Context window | 500K | 256K |
| Max output tokens | — | 256K |
| Input modalities | text, image | text, image |
| Reasoning mode | always | always |
| Open weights | No | No |
| Input | $2 | $1 |
| Output | $6 | $2 |
| Cached input | $0.5 | $0.2 |
| Batch input | — | — |
| Free tier | Yes | No |
| Output speed (tok/s) | — | — |
| Time to first token (s) | — | — |
| Latency tier | medium | slow |
| Trains on inputs | No | No |
| License | Proprietary | Proprietary |
| Clouds | — | — |
| Compliance | SOC2 | SOC2 |
| Unified score | 8.2 | 6.7 |
| Decision Maker | 8 | 6.5 |
| Domain Strategist | 8.5 | 6.5 |
| Finance Lead | 9 | 7.5 |
| Domain Practitioner | 8.5 | 7 |
| Power User | 8 | 6.5 |
| Skeptic | 7 | 6 |
| Value score | 8.8 | 7.5 |
| SWE-bench Verified | — | 70.8 |
Scores link to their sources. Missing cells mean the vendor hasn't disclosed a result — honesty over padding.