SpaceXAI: Grok 4.20
X-ai · x-ai/grok-4.20
Runs in the cloud, on our API — not on your own machine.
tools reasoning optional
Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
What it costs
Long prompts cost more
| Prompt size | In / 1M | Out / 1M | Cache read / 1M |
|---|---|---|---|
| Up to 200K | $2.50 | $5 | $0.4 |
| 200K and above | $5 | $10 | $0.8 |
The band follows the size of the prompt you send.
Final AI-token prices, per million tokens. Bring your own provider key in the app to pay provider rates directly.
What it can do
Benchmarks
| Benchmark | What it measures | Score |
|---|---|---|
| Epoch Capabilities Index | one score summarising the benchmarks below — an index, not a percentage | 152.0 |
Scores by Epoch AI, CC BY 4.0. The ± is the margin of error: models inside each other's margins are tied, not ranked. Epoch's notes on this row: source “epoch”, accessibility “API access”.
Dates
Using it
In the 00 app — pick it per agent, and per tier, then build your own agents on it. Get 00.
As a drop-in API — the same model at an OpenAI-compatible endpoint. Two settings:
- Create a workspace API key in the Overblast console — usage bills that workspace's AI tokens, at the prices on this page.
- Point your base URL at
https://brain.deployd.network/ai/v1. Chat completions with streaming, embeddings,/images,/audio/transcriptionsand/videos.
curl https://brain.deployd.network/ai/v1/chat/completions \
-H "Authorization: Bearer ob_live_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "x-ai/grok-4.20",
"messages": [{ "role": "user", "content": "Hello" }]
}'
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