Grok 4.3 pricing & specs
xAI · released 2026-04-17 · ● verified 2026-10-11
input / 1M$1.25
output / 1M$2.50
context1M
max output30K
// price history ($/1M tokens)
// cheaper or similar alternatives
| model | in | out | ctx | vs Grok 4.3 |
|---|---|---|---|---|
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | 1.05M | −88.8% |
| Claude Haiku 5.5 | $0.10 | $0.50 | 1M | −87.2% |
| GPT-6 Luna | $0.10 | $0.50 | 1.05M | −87.2% |
| GLM-5.3-Flash | $0.15 | $0.50 | 1M | −84.8% |
| GPT-5.6 Luna | $0.20 | $1.20 | 1.05M | −71.2% |
// price by host
| host | in $/1M | out $/1M |
|---|---|---|
| Amazon Bedrock | $1.25 | $2.50 |
| Google Vertex AI | $1.25 | $2.50 |
// faq
How much does Grok 4.3 cost?
Grok 4.3 costs $1.25 per million input tokens and $2.50 per million output tokens. At 50M input and 10M output tokens per month that is about $87.50. Prompts above 200K tokens are billed at $2.50 input and $5.00 output.
What is the context window of Grok 4.3?
1M tokens, with up to 30K output tokens per request.
Does Grok 4.3 support prompt caching?
Yes. Cached input tokens cost $0.20 per million.
What are cheaper alternatives to Grok 4.3?
Gemini 2.5 Flash-Lite ($0.10 in / $0.40 out), Claude Haiku 5.5 ($0.10 in / $0.50 out), GPT-6 Luna ($0.10 in / $0.50 out) offer the same input types and capabilities for less.
// spec sheet
- input / 1M
- $1.25
- output / 1M
- $2.50
- cache read / 1M
- $0.20
- > 200K ctx
- $2.50 / $5.00
- blended (3:1)
- $1.5625
- context
- 1M
- max output
- 30K
- input types
- text · image · pdf
- reasoning
- yes
- tool calling
- yes
- structured output
- yes
- open weights
- no
- knowledge cutoff
- n/a
- price source
- xAI
// cost calculator
| model | in $/1M | out $/1M | = monthly |
|---|---|---|---|
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | $9.00 |
| Claude Haiku 5.5 | $0.10 | $0.50 | $10.00 |
| GPT-6 Luna | $0.10 | $0.50 | $10.00 |
| Grok 4.3 | $1.25 | $2.50 | $87.50 |
Base-tier list prices. Long-context tiers, caching and batch discounts are not included.