Pricing · xAI
Grok Build 0.1
xAI's grok-build-0.1, 256K tokens of context. Every number on this page was read off xAI's own pricing
page — never estimated, never recalled from memory.
How xAI describes it
“SpaceXAI's intelligent coding model for agentic software, engineering, and workflow tasks.”
Pricing
| Input | $1.00 | per 1M tokens |
|---|---|---|
| Output | $2.00 | per 1M tokens |
| Cached input | $0.20 | per 1M tokens · 0.2× the input price |
Long-prompt tiers
Pricing changes above a prompt-size threshold. If your average request is near the boundary, the effective rate is not the headline rate.
| Condition | Input | Output | Cached input |
|---|---|---|---|
| prompt ≥ 200000 tokens | $2.00 | $4.00 | $0.40 |
At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, Grok Build 0.1 costs $1.40: $1.00 for input and $0.40 for output, at the prices above. Same formula as the calculator; change the volume there.
Where this price sits
$1.00 per 1M input tokens (for prompts under 200K tokens) is the 22nd cheapest input price of the 67 current models with a verified price on this site, and the 1st of xAI's 8. Output costs 2.0× the input price.
Other current models in the Grok family:
- Grok 4.3 1M tokens $1.25 in · $2.50 out
- Grok 4.20 (reasoning) 1M tokens $1.25 in · $2.50 out
- Grok 4.20 (non-reasoning) 1M tokens $1.25 in · $2.50 out
- Grok 4.20 Multi-agent 1M tokens $1.25 in · $2.50 out
- Grok 4.6 500K tokens $2.00 in · $6.00 out
- Grok 4.7 500K tokens $2.00 in · $6.00 out
- Grok 4.5 500K tokens $2.00 in · $6.00 out
Mentioned in
One post on this site cites Grok Build 0.1. The sentence is the post's own, taken from where it links here.
-
Prompt Caching Is Not 10% Everywhere: What a Cache Hit Costs Across Eight Providers · September 16, 2026
No single multiplier: Grok 4.6 is $0.50 cached on $2.00 of input, 0.25×; Grok 4.5 $0.30 on the same $2.00, 0.15×; Grok 4.3 and the three Grok 4.20 variants $0.20 on $1.25, 0.16×; Grok Build 0.1 $0.20 on $1.00, 0.20×.
Specifications
| API model id | grok-build-0.1 | |
|---|---|---|
| Provider | xAI | |
| Family | Grok | |
| Context window | 256K tokens | |
| Released | May 19, 2026 | |
| Status | Current | |
| Intended use | coding | |
| Aliases | grok-code-fast-1, grok-code-fast, grok-code-fast-1-0825 | |
Grok Build 0.1 was released on May 19, 2026. xAI lists its intended use as coding.
Questions about Grok Build 0.1 pricing
- How much does Grok Build 0.1 cost per million tokens?
- $1.00 per 1M input tokens and $2.00 per 1M output tokens for prompts under 200,000 tokens, read on xAI's official pricing page on September 28, 2026.
- What does a cached input token cost on Grok Build 0.1?
- $0.20 per 1M cached input tokens, 20% of the $1.00 input price.
- Does Grok Build 0.1 cost more for long prompts?
- Yes. For prompts of 200,000 tokens or more it costs $2.00 per 1M input tokens and $4.00 per 1M output tokens, $0.40 for cached input, against $1.00 and $2.00 below that.
Verified September 28, 2026 against xAI's official pricing page. Confidence: confirmed. No price change recorded for this model. How the data is checked.
Other xAI models with a verified price
- Grok 4.3 Grok $1.25 in · $2.50 out
- Grok 4.20 (reasoning) Grok $1.25 in · $2.50 out
- Grok 4.20 (non-reasoning) Grok $1.25 in · $2.50 out
- Grok 4.20 Multi-agent Grok $1.25 in · $2.50 out
- Grok 4.6 Grok $2.00 in · $6.00 out
- Grok 4.7 Grok $2.00 in · $6.00 out
- Grok 4.5 Grok $2.00 in · $6.00 out
Cheaper or equally priced alternatives
Current models with an input price at or below $1.00 per 1M tokens.
- Claude Haiku 4.5 Anthropic $1.00 in · $5.00 out
- Gemini Robotics ER 2 Preview Google $1.00 in · $5.00 out · promo
- Gemini Robotics ER 2 Streaming Preview Google $1.00 in · $5.00 out · promo
- Gemini 3.8 Flash Google $0.75 in · $3.75 out · promo
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