Models

grok-4-1-fast-reasoning

2000K ctx · 4 providers · updated 2026-09-19 02:15 UTC

Cheapest
$0.247 via Burncloud
Avg price
$0.590 /1M
providers
4
(3 × $0.180 + $0.450) ÷ 4 = $0.247/1M — the $/1M figure blends input and output at 3:1 — that is the only way models with two different rates can be ranked on one axis. Your actual rate depends on your own input:output mix — input only $0.180, 3:1 $0.247, 1:1 $0.315, output only $0.450 per 1M.

The board shows this model's cheapest measured offer ($0.247/1M); the smaller figure under it is the mean of the 4 offers listed below ($0.590/1M). Add those up and divide — it matches.

ProviderRouter / Source$ in /1M$ out /1MTTFTTPSUptimeEvidence
burncloud burncloud ↗ $0.180$0.450 — — — API-measured
azure_ai Pricebook (LiteLLM) ↗ $0.200$0.500 — — — Official list
requesty Requesty ↗ $0.200$0.500 — — — API-measured
xai Pricebook (LiteLLM) ↗ $1.25$2.50 — — — Official list

Price trend

Cheapest blended price, last 31 days (USD/1M): $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475 → $0.2475

Data & method

Cheapest ranked by blended = (3×in + out) ÷ 4; performance columns show only when a source provides them, never estimated. “Official list” = LiteLLM open pricebook (MIT); “API-measured” = provider/aggregator public APIs. Machine-readable data: /api/v1/models/grok-4-1-fast-reasoning.json. Free reuse requires attribution to tkx.org.

FAQ

How much does grok-4-1-fast-reasoning cost?

Cheapest measured offer right now: $0.18/1M input, $0.45/1M output via burncloud — across 4 tracked providers, refreshed hourly.

Who serves grok-4-1-fast-reasoning?

4 providers currently serve it. The table above lists each with input/output price, TTFT, TPS, uptime and an evidence tier.

Is the price of grok-4-1-fast-reasoning going up or down?

The daily candles above track the cheapest blended price ($/1M, 3:1 in:out). TKX snapshots every hour, so drops and hikes show up the same day they happen.

Related analysis

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