Grok 4.20
SpaceXAI's Grok 4.20 flagship release with tool calling, multimodal input support, and a 2M-token context window. Content policy rejections can still be charged: SpaceXAI may pass through a $0.05 moderation-failure fee, or a $0.055 usage-guidelines violation fee, depending on which rejection upstream returns.
- Reasoning
- Vision
- Tool Calling
- Structured Output
Added Mar 31, 2026
Pricing
Auto routing · per 1M tokens- Input
- $1.25
- Output
- $2.50
- Cache read
- $0.20
Specifications
- Context window
- 2M
- Max output
- 131.1K
- Avg output (7d)
- 543 tokens
- Longer than 48% of models
Benchmarks
Benchmarks
Sourced from Artificial Analysis.
Intelligence Index
25.7
Agentic work
T²-Bench Telecom (legacy)
Legacy fallback · Conversational AI agents in dual-control scenarios
93.0%
Better than 89% of models compared
Document reasoning
AA-LCR v1.1
Long context reasoning with updated grading
69.0%
Better than 60% of models compared
Reasoning
HLE
Humanity's Last Exam
34.5%
Better than 82% of models compared
IFBench
Instruction-following benchmark
81.2%
Better than 99% of models compared
Coding
Terminal-Bench Hard (legacy)
Legacy fallback · Agentic coding and terminal use
37.9%
Better than 85% of models compared
Legacy benchmarks
GPQA Diamond (legacy)
Graduate-level scientific reasoning
91.1%
Better than 91% of models compared
AA-LCR (unversioned / legacy)
Long context reasoning evaluation
69.0%
Better than 60% of models compared
Last updated Oct 11, 2026
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