SpaceXAI: Grok 4.20
x-ai/grok-4-20Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities.
Modalities
In / out per 1M$1.25 / $2.50
Context1.9M
ReleasedMar 31, 2026
Providers
4 providers serve this model upstream.
| Provider | Input /M | Output /M | Cache read /M | Latency P50 | Throughput P50 | Uptime |
|---|---|---|---|---|---|---|
| $2.50 | $5.00 | $0.40 | 2.26s | 63 tps | 100% | |
| $1.25 | $2.50 | $0.20 | 1.31s | 68 tps | 99.2% | |
| $1.25 | $2.50 | $0.20 | 1.39s | 70 tps | 98.08% | |
| $2.50 | $5.00 | $0.40 | 2.85s | 69 tps | — |
Market-wide measurements, refreshed every 15 minutes. They describe who serves Grok 4.20 in general, not how ProjectCOZY routes your requests.
Pricing
List rates per 1M tokens — what Grok 4.20 costs pay-as-you-go elsewhere, not what you pay here.
Input
$1.25
per 1M tokens
Output
$2.50
per 1M tokens
Cache read
$0.20
per 1M cached tokens
Included in every pass
Grok 4.20 is included in every ProjectCOZY pass at no extra cost — one flat rate, no per-token metering. The rates above are there for comparison.
Performance
Time to first token and output speed across every provider, over the last 3 days.
0.0s2.0s4.0s6.0s8.0s
Oct 11, 12 AMOct 11, 8 AMOct 11, 4 PMOct 12, 12 AMOct 12, 8 AMOct 12, 4 PMOct 13, 12 AMOct 13, 8 AMOct 13, 4 PMOct 14, 12 AMOct 14, 8 AM
SpaceXAI SpaceXAI SpaceXAI SpaceXAI
0 tok/s100 tok/s200 tok/s300 tok/s400 tok/s
Oct 11, 12 AMOct 11, 8 AMOct 11, 4 PMOct 12, 12 AMOct 12, 8 AMOct 12, 4 PMOct 13, 12 AMOct 13, 8 AMOct 13, 4 PMOct 14, 12 AMOct 14, 8 AM
SpaceXAI SpaceXAI SpaceXAI SpaceXAI
Uptime
100% of requests were served successfully over the last 3 days, across all providers.
Last 3 daysAvailability 92.8%
Oct 11, 2:00 PMNow
Availability over the last 24 hoursAvailability 93.12%
100% 93% 87% 80%
Oct 13, 2:40 PMNow
Apps
Tools that most often run Grok 4.20, by tokens this week.
Activity
136.0B tokens processed market-wide in the last month.
02.0B4.0B6.0B8.0B
Sep 14Sep 19Sep 24Sep 29Oct 4Oct 9Oct 14
Tokens
FAQ
Which model id do I use for Grok 4.20?
x-ai/grok-4.20. Send it as the model field from any OpenAI-compatible client, against http://192.168.1.55/v1.
How much context does Grok 4.20 hold?
2,000,000 tokens per request, of which up to 1,800,000 can be the response.
What can it accept and return?
Input: text, image, file. Output: text.
What does Grok 4.20 cost on a pass?
Nothing beyond the pass itself. Pay-as-you-go elsewhere it lists at $1.25 per 1M input tokens and $2.50 per 1M output tokens.
How current is its knowledge?
Training data runs to Sep 2025. Anything later has to come from your prompt or a tool call.
Who built Grok 4.20?
SpaceXAI, in the Grok family.
Explore
Other models your pass can call.
