Reasoning Grok for document-heavy analysis and long-horizon tool use
- Context
- 1M
- Released
- 7mo ago
Sources:models.dev
Benchmarks
DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.
Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.
Other published benchmarks
| Evaluation | Reported score and source |
|---|---|
| FrontierMath-Tier-4-v2-Private | |
| FrontierMath-Tiers-1-3-v2-Private | |
| GPQA diamond | |
| OTIS Mock AIME 2024-2025 | |
| SimpleQA Verified |
Benchmark compilation: Epoch AI, Capabilities & benchmarking (CC BY attribution). Scores are converted to percentages and model names matched to the Vertical Tabs catalog. Individual evaluations are credited to their original sources. External results may carry separate licences and evaluation configurations; do not interpret scores from different harnesses as directly comparable.
Specifications
- Developer
- xAI
- Model family
- Grok
- Type
- Language model
- Predecessor
- —
- Successor
- —
- Released
- March 9, 2026
- Model ID
xai/grok-4.20-0309-reasoning- Openness
- Closed
- License
- —
- Input modalities
- text, image, file
- Output modalities
- text
- Modality
- text+image+file->text
- Max output tokens
- 30K
- Hugging Face
- —
- Source freshness
- Metadata synced Oct 8, 2026, 10:17 PM UTC
Additional source evidence
- Source model
- xai/grok-4.20-0309-reasoning
- Source family
- grok
- Last updated
- 2026-03-09
- Model context
- 1M
- Model output limit
- 30K
- Open weights
- No
- File attachments
- Yes
- Reasoning
- Yes
- Tool calling
- Yes
- Structured output
- Yes
- Temperature control
- Yes
Complete source record (JSON)
{
"id": "xai/grok-4.20-0309-reasoning",
"name": "Grok 4.20 (Reasoning)",
"description": "Reasoning Grok for document-heavy analysis and long-horizon tool use",
"family": "grok",
"last_updated": "2026-03-09",
"attachment": true,
"reasoning": true,
"tool_call": true,
"structured_output": true,
"temperature": true,
"modalities": {
"input": [
"text",
"image",
"pdf"
],
"output": [
"text"
]
},
"limit": {
"context": 1000000,
"output": 30000
},
"release_date": "2026-03-09",
"open_weights": false
}Infrastructure