azure_ai grok-4-fast-reasoning (grok-4-fast-reasoning)
azure_ai grok-4-fast-reasoning costs USD 0.20 per 1M input tokens and USD 0.50 per 1M output tokens (community cross-check, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json), verified 2026-10-23 22:53 UTC.
Last verified 2026-10-23T22:53:51+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 0.20 / 1M tokens
- Output
- USD 0.50 / 1M tokens
- This price since
- 2026-01-16T23:18:46+00:00
- FX used
- 1 EUR = 1.1403 USD (ECB)
- Billing
- per_token
Specification
- Mode
- chat
- Region
- global
- Listing
- listing not verifiable
aggregator / community mirror: no first-party public page to check against - First seen
- 2025-10-05T00:25:39+00:00
- SKU id
llm/azure_ai/grok-4-fast-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/302ai/grok-4-fast-reasoning | modelsdev (community cross-check) | 0.20 | 0.50 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/helicone/grok-4-fast-reasoning | modelsdev (community cross-check) | 0.20 | 0.50 | differs differs by -0.0% | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/jiekou/grok-4-fast-reasoning | modelsdev (community cross-check) | 0.18 | 0.45 | differs differs by -10.0% | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/poe/xai/grok-4-fast-reasoning | modelsdev (community cross-check) | 0.20 | 0.50 | agrees | 2026-10-23T23:39:40+00:00 |
Price history (90 days)
| Observed (UTC) | Price | USD | EUR | Output / 1M | Snapshot |
|---|---|---|---|---|---|
| 2026-09-26T22:40:16+00:00 | USD 0.20 | 0.20 | 0.1754 | 0.50 | #315 |
| 2026-01-16T23:18:46+00:00 | USD 0.20 | 0.20 | 0.1722 | 0.50 | #187 |
Each row is a change point: the price held from that moment until the next row. Full history: JSON · CSV.
Changes
| Seen | Kind | Change |
|---|---|---|
| 2026-09-26T22:40:16+00:00 between 2026-09-25 and 2026-09-26 |
Relisted | 0.2 USD |
| 2026-09-22T22:14:48+00:00 between 2026-09-21 and 2026-09-22 |
Delisted | was 0.2 USD |
| 2026-01-16T23:18:46+00:00 between 2026-01-10 and 2026-01-16 |
Price change input, per 1M tokens | 0.43 → 0.2 USD (-53.5%) |
| 2025-10-05T00:25:39+00:00 between 2025-09-28 and 2025-10-05 |
New SKU | 0.43 USD |
API: /v1/skus/llm/azure_ai/grok-4-fast-reasoning
Cite this
Free to reuse under CC BY 4.0 with this credit. The numbers are list prices, not transacted prices.
InfraRabbit (2026). azure_ai grok-4-fast-reasoning [data as of 2026-10-23]. https://infrarabbit.com/llm/azure_ai/grok-4-fast-reasoning (accessed 2026-10-24). List prices, not transacted prices. CC BY 4.0.
BibTeX
@misc{infrarabbit_llm_azure_ai_grok_4_fast_reasoning_2026,
author = {{InfraRabbit}},
title = {azure_ai grok-4-fast-reasoning},
year = {2026},
howpublished = {\url{https://infrarabbit.com/llm/azure_ai/grok-4-fast-reasoning}},
note = {Data as of 2026-10-23; accessed 2026-10-24; list prices, not transacted prices; CC BY 4.0}
}