Grok 4.20 pricing & benchmarks
Released Mar 31, 2026 · served by 1 provider
What Grok 4.20 is
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
- Model ID:
x-ai/grok-4.20 - Modality: text+image+file->text
- Knowledge cutoff: 2025-09-01
- Tool calling: supported · Structured output: supported
Providers and prices for Grok 4.20
The same model costs different amounts depending on who serves it. Prices are per 1M tokens, cheapest first. Uptime and throughput are OpenRouter's rolling measurements, not vendor claims.
| Provider | Input | Output | Context | Quant | Uptime 24h | Throughput |
|---|---|---|---|---|---|---|
| xAIcheapest | $2.50 | $5.00 | 2M | — | 99.9% | — |
Grok 4.20 benchmark results
Design Arena head-to-head results, as reported through the OpenRouter model API.
| Category | Arena | Rank | Elo | Win rate |
|---|---|---|---|---|
| htmlslides | agents | #14 | 1182 | 45.7% |
| asciiart | models | #17 | 1214 | 49% |
| androidnative | agents | #19 | 1155 | 41.5% |
| mobileapps | agents | #19 | 1183 | 48.3% |
| webapps | agents | #19 | 1197 | 49.9% |
| fullstack | agents | #23 | 1101 | 41.1% |
| svg | models | #24 | 1214 | 53.8% |
| godotgamedev | agents | #26 | 1089 | 38.5% |
| 3d | models | #33 | 1248 | 53.2% |
| codecategories | models | #33 | 1249 | 53.9% |
| gamedev | models | #33 | 1253 | 53.5% |
| website | models | #33 | 1252 | 54% |
| dataviz | models | #34 | 1240 | 52.4% |
| uicomponent | models | #36 | 1239 | 51.4% |
FAQ
How much does the Grok 4.20 API cost?
$1.25 per 1M input tokens and $2.50 per 1M output tokens. A typical workload of 1M input + 300K output tokens costs about $2.00.
Is Grok 4.20 free?
No. It is a paid model starting at $1.25 per 1M input tokens, though some providers offer trial credits.
Which provider is cheapest for Grok 4.20?
xAI at $2.50 input / $5.00 output per 1M tokens.
Can I self-host Grok 4.20?
No. Grok 4.20 is closed-weight and only available through hosted APIs.