xai grok-4.20-0309-reasoning (grok-4.20-0309-reasoning)
xai grok-4.20-0309-reasoning costs USD 1.25 per 1M input tokens and USD 2.50 per 1M output tokens (community cross-check, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json), verified 2026-10-24 04:57 UTC.
Last verified 2026-10-24T04:57:20+00:00 · Source: https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json (community cross-check, waak source litellm)
No first-party source is read for this model yet; this value is a community cross-check and can lag the provider.
Price
- Input
- USD 1.25 / 1M tokens
- Output
- USD 2.50 / 1M tokens
- Cached input
- USD 0.20 / 1M
- Batch input
- USD 1.00 / 1M
- Batch output
- USD 2.00 / 1M
- This price since
- 2026-08-10T18:26:41+00:00
- FX used
- 1 EUR = 1.1403 USD (ECB)
- Billing
- per_token
Specification
- Context window (tokens)
- 1,000,000
- Max output
- 1,000,000
- Mode
- chat
- Region
- global
- Listing
- listing not verifiable
aggregator / community mirror: no first-party public page to check against - First seen
- 2026-04-17T03:19:59+00:00
- SKU id
llm/xai/grok-4.20-0309-reasoning
Other listings of this model
Sources can disagree. The provider's own listing is first-party; LiteLLM, OpenRouter and models.dev are community cross-checks. Differences are shown, not resolved.
| SKU | Source | Input / 1M | Output / 1M | vs this page | Last verified |
|---|---|---|---|---|---|
| llm/modelsdev/cloudflare-ai-gateway/xai/grok-4.20-0309-reasoning | modelsdev (community cross-check) | 2.00 | 6.00 | differs differs by +60.0% | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/edenai/xai/grok-4.20-0309-reasoning | modelsdev (community cross-check) | 1.25 | 2.50 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/impossibl/xai/grok-4.20-0309-reasoning | modelsdev (community cross-check) | 1.25 | 2.50 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/merge-gateway/xai/grok-4.20-0309-reasoning | modelsdev (community cross-check) | 1.25 | 2.50 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/tempr/xai/grok-4.20-0309-reasoning | modelsdev (community cross-check) | 1.25 | 2.50 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/xai/grok-4.20-0309-reasoning | modelsdev (community cross-check) | 1.25 | 2.50 | agrees | 2026-10-23T23:39:40+00:00 |
Price history (90 days)
| Observed (UTC) | Price | USD | EUR | Output / 1M | Snapshot |
|---|---|---|---|---|---|
| 2026-09-25T22:35:20+00:00 | USD 1.25 | 1.25 | 1.0962 | 2.50 | #313 |
| 2026-08-10T18:26:41+00:00 | USD 1.25 | 1.25 | 1.0818 | 2.50 | #254 |
| 2026-04-17T03:19:59+00:00 | USD 2.00 | 2.00 | 1.6953 | 6.00 | #200 |
Each row is a change point: the price held from that moment until the next row. Full history: JSON · CSV.
Changes
| Seen | Kind | Change |
|---|---|---|
| 2026-09-25T22:35:20+00:00 between 2026-09-24 and 2026-09-25 |
Price change batch input, per 1M tokens | – → 1 USD |
| 2026-08-10T18:26:41+00:00 between 2026-08-09 and 2026-08-10 |
Spec change Context window (tokens) | 2000000.0 → 1000000.0 |
| 2026-08-10T18:26:41+00:00 between 2026-08-09 and 2026-08-10 |
Price change input, per 1M tokens | 2 → 1.25 USD (-37.5%) |
| 2026-04-17T03:19:59+00:00 between 2026-04-12 and 2026-04-17 |
New SKU | 2 USD |
API: /v1/skus/llm/xai/grok-4.20-0309-reasoning
Cite this
Free to reuse under CC BY 4.0 with this credit. The numbers are list prices, not transacted prices.
InfraRabbit (2026). xai grok-4.20-0309-reasoning [data as of 2026-10-24]. https://infrarabbit.com/llm/xai/grok-4.20-0309-reasoning (accessed 2026-10-24). List prices, not transacted prices. CC BY 4.0.
BibTeX
@misc{infrarabbit_llm_xai_grok_4_20_0309_reasoning_2026,
author = {{InfraRabbit}},
title = {xai grok-4.20-0309-reasoning},
year = {2026},
howpublished = {\url{https://infrarabbit.com/llm/xai/grok-4.20-0309-reasoning}},
note = {Data as of 2026-10-24; accessed 2026-10-24; list prices, not transacted prices; CC BY 4.0}
}