Grok 4.5 pricing (retired)
Retired model. xAI has superseded Grok 4.5 — the prices below are the last ones we verified and are kept for reference. Its replacement is Grok 4.6 ($2 / $6 per 1M in / out).
What one task cost on Grok 4.5
Per-million-token prices are hard to feel, so here are typical token counts for common jobs priced with Grok 4.5. Figures are USD at the rates above and exclude prompt caching and batch discounts.
| Task | Tokens (in / out) | Cost |
|---|---|---|
| Code review of a 500-line pull request | 60,000 / 4,000 | $0.144 |
| Debug one failing test | 40,000 / 6,000 | $0.116 |
| Generate a landing page in one shot | 3,000 / 30,000 | $0.186 |
| Draft a 1,200-word article | 2,000 / 2,500 | $0.019 |
| Answer a question from a 20-page document | 25,000 / 800 | $0.055 |
| Multi-step agent run (10 tool calls) | 250,000 / 25,000 | $0.650 |
| All of the above, once | $1.17 |
Grok 4.5 by xAI costs $2 per 1M input tokens and $6 per 1M output tokens — about 200.0k tokens per $1. Prices last verified 2026-09-19 (historical).
The verdict
xAI's previous default, superseded by Grok 4.6 in August 2026. An index of 39 at $2 / $6 undercut GPT-5.6 Sol and Claude Opus 5 on output by a wide margin, making it a strong value alternative — though its 500k context window is smaller than the 1M+ rivals, and Grok 4.6 now matches its price with a higher index.
A concrete example: sending 100,000 input tokens and getting back 20,000 output tokens with Grok 4.5 costs about $0.32 at current prices.
Who is Grok 4.5 for?
Grok 4.5 is xAI's previous default model — an index of 39 at $2 / $6 per 1M, which undercuts the OpenAI and Anthropic flagships on output by a wide margin. It has been superseded by Grok 4.6, which carries the same price with an index of 44, so there is little reason to start a new integration on 4.5.
Its context window (500k) is smaller than the 1M+ rivals, which matters for long-document work. Existing integrations pinned to Grok 4.5 keep working at the same rate; for new work, Grok 4.6 is the better buy, and for very long inputs Gemini or Claude serve better.
Strengths & weaknesses
- Strength: Frontier index at a competitive price
Grok 4.5 key facts
| Provider | Grok pricing |
|---|---|
| Input price | $2 / 1M tokens |
| Output price | $6 / 1M tokens |
| Tokens / $1 | 200.0k |
| Intelligence / $1 | 78,000 |
| Context window | 500.0k tokens |
| Tier | frontier |
| Intelligence index | 39 / 100 |
| Released | 2026-07-08 |
| Last verified | 2026-09-19 |
What Grok 4.5 delivers for your budget
For a coding workload, here is roughly what each monthly budget buys:
| Budget | Tokens / month | Months of workload |
|---|---|---|
| $20 | 6.8M | 10.5x |
| $50 | 17.1M | 26.3x |
| $100 | 34.2M | 52.6x |
Other Grok models
How Grok 4.5 compares to its closest rivals
Rather than repeating the full catalog on every page, here are the three current models nearest to Grok 4.5 on the intelligence index — and why you might still pick one instead:
- Gemini 3.7 Flash (Gemini) — $0.75 input / $3.75 output per 1M tokens. Why you might pick it: Frontier-adjacent index at Flash price.
- GPT-5.6 Luna (ChatGPT) — $0.20 input / $1.20 output per 1M tokens. Why you might pick it: ChatGPT quality at a budget price.
- Claude Sonnet 5 (Claude) — $2 input / $10 output per 1M tokens. Why you might pick it: Strong coding at mid-tier price.
Grok 4.5 — frequently asked questions
How much does Grok 4.5 cost?
Grok 4.5 by xAI costs $2 per 1M input tokens and $6 per 1M output tokens.
How many tokens per dollar does Grok 4.5 give you?
On a typical 1:3 input-to-output mix, Grok 4.5 delivers around 200.0k tokens per dollar — an intelligence-per-dollar score of 78000.
What is Grok 4.5's context window?
Grok 4.5 supports a context window of 500.0k tokens.
Is Grok 4.5 worth it in 2026?
Grok 4.5 is Grok's frontier tier model. Use the AI Intelligence Calculator to see how its value compares to every other model at your budget.