Context
2M
Max output
n/a
Serving providers
1
Cheapest input
$1.25 /1M
Prices are on-demand list rates. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.
Benchmarks
independent evaluations · source: Artificial AnalysisSpeed & latency
Output speed
105 t/s
tokens / second
Time to first token
21.14s
latency
Headline indices
Individual benchmarks · click a row for effort variants
| Benchmark | Best score | Effort | Cost / task | |
|---|---|---|---|---|
| CritPt | 7% | default | — | |
| GPQA Diamond | 91% | default | — | |
| Humanity's Last Exam | 35% | default | — | |
| IFBench | 81% | default | — | |
| Long-Context Reasoning | 62% | default | — | |
| MMMU-Pro | 75% | default | — | |
| Omniscience | 14.8 | default | — | |
| Omniscience Accuracy | 0.3 | default | — | |
| Omniscience Non Hallucination | 0.8 | default | — | |
| SciCode | 46% | default | — | |
| TerminalBench Hard | 38% | default | — | |
| τ²-bench | 93% | default | — |
Pricing detail
cost beyond the standard rate · source: models.devLong context (>200K)
$2.83 / $5.67
input / output · per 1M
Pricing by serving provider
standard tier · per 1M tokens · click a provider to expand| Serving provider | Input /1M | Output /1M | Endpoints | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OpenRouterCheapest | $1.25 | $2.50 | 1 | |||||||||||||
| ||||||||||||||||
Price history
input + output $/1M since we started tracking Input Output
Price history is accruing. We record a point each day a price changes; the full backfill lands shortly.
Cost calculator
estimate your monthly spend on this model$450
estimated / month
Model IDs
copy the exact identifier for your platformx-ai/grok-4.20
Frequently asked questions
Grok 4.20 pricing, context and availabilityHow much does Grok 4.20 cost?
Grok 4.20 costs $1.25 per 1M input tokens and $2.50 per 1M output tokens at its cheapest provider via OpenRouter.
What is the context window of Grok 4.20?
Grok 4.20 accepts up to 2M tokens of context.
Other xAI models
compare pricing across the xAI lineupGrok 4$3.00/1M · 5 providersGrok 4.1 Fast Non Reasoning$0.20/1M · 3 providersGrok 4.1 Fast Reasoning$0.20/1M · 3 providersGrok 3 Mini$0.25/1M · 3 providersGrok 4.3$1.25/1M · 3 providersGrok 3$3.00/1M · 3 providersGrok 4 Fast Non Reasoning$0.20/1M · 2 providersGrok 4 Fast Reasoning$0.20/1M · 2 providers
Pricing verified against LiteLLM + OpenRouter + provider pages · refreshed daily
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