Grok 4.5 benchmarks
Grok 4.5 is a proprietary model from xAI, released 8 Jul 2026. It ranks 31st of 51 on our overall leaderboard and 17th of 41 for agents. At A$4.21 per million tokens (blended), it costs 1.2× the median model we track. None of the major cloud platforms offer it in an Australian region yet.
- CONTEXT WINDOW
- 500,000 tokens
- INPUT
- text, image
- WEIGHTS
- Proprietary
- RELEASED
- 8 Jul 2026
Grok 4.5 across our rankings.
Benchmark results.
Independent test scores are for the high effort setting. “Among tracked” ranks Grok 4.5 against the 51 models on this site; LMArena ranks run across its full leaderboard.
| BENCHMARK | RESULT | AMONG TRACKED | SOURCE DETAIL |
|---|---|---|---|
| INDEPENDENT TESTS · ARTIFICIAL ANALYSIS | |||
| AA Intelligence Index | 38.8 | #26 of 51 | high effort |
| AA Coding Index | 72.4 | #18 of 42 | high effort |
| GPQA Diamond | 93.1% | #12 of 44 | high effort |
| Humanity’s Last Exam | 42.7% | #24 of 51 | high effort |
| AA-LCR | 79.3% | #34 of 51 | high effort |
| Terminal-Bench 2.1 | 81.6% | #19 of 42 | high effort |
| τ²-Bench (banking) | 42.1% | #12 of 41 | high effort |
| SciCode | 55.0% | #21 of 46 | high effort |
| BLIND HUMAN VOTES · LMARENA | |||
| LMArena Text30,103 votes · ±5 | 1468 | #28 of 42 | #42 of 402 on LMArena · 13 Sep 2026 |
| LMArena WebDev10,137 votes · ±7 | 1552 | #23 of 45 | #28 of 129 on LMArena · 22 Sep 2026 |
| LMArena Vision8,355 votes · ±8 | 1280 | #19 of 33 | #24 of 152 on LMArena · 13 Sep 2026 |
| LMArena Document4,965 votes · ±9 | 1464 | #17 of 26 | #22 of 44 on LMArena · 13 Sep 2026 |
| LMArena Search31,505 votes · ±7 | 1202 | #7 of 12 | #8 of 34 on LMArena · 24 Aug 2026 |
| LMArena Agent38,146 sessions | #19 | #17 of 37 | #19 of 46 on LMArena · 15 Sep 2026 |
What Grok 4.5 costs in Australian dollars.
List prices converted at the snapshot’s RBA rate, excluding GST. Reasoning models are billed for their thinking as output tokens, so heavier settings cost more than the job estimates show.
| PER MILLION TOKENS | AUD | USD LIST |
|---|---|---|
| Input tokens | A$2.81 | US$2.00 |
| Output tokens | A$8.42 | US$6.00 |
| Blended (3 in : 1 out) | A$4.21 | US$3.00 |
| JOB | COST (AUD) | MEDIAN MODEL |
|---|---|---|
| Customer support replyPER 1,000 REPLIES | A$8.14 | ≈ A$6.58 |
| Summarise a 30-page documentPER 100 DOCUMENTS | A$6.29 | ≈ A$4.74 |
| Agentic coding taskPER 10 TASKS | A$4.89 | ≈ A$3.72 |
Running Grok 4.5 in Australia.
None of the major cloud platforms offer it in an Australian region yet. How the platforms compare →
| PLATFORM | AVAILABILITY | DETAIL |
|---|---|---|
| AWS Bedrock · Sydney | NOT OFFERED | |
| AWS Bedrock · Melbourne | NOT OFFERED | |
| Azure · Australia East | NOT OFFERED | |
| Google Vertex AI · Sydney | NOT OFFERED |
Compare it with.
Grok 4.5, answered.
How much does Grok 4.5 cost in Australian dollars?
Grok 4.5 lists at US$2.00 per million input tokens and US$6.00 per million output tokens — A$2.81 and A$8.42 at A$1 = US$0.7123 (RBA, 22 Sep 2026), excluding GST. A typical customer support reply works out at about A$8.14 per 1,000 replies, before any reasoning tokens.
Can I use Grok 4.5 in Australia with data kept onshore?
None of the major cloud platforms offer it in an Australian region yet. Availability comes from the cloud providers’ own documentation; check your provider’s current terms before relying on it for data-residency obligations.
Is Grok 4.5 good for coding?
It ranks 19th of 42 on our coding ranking, with an Artificial Analysis Coding Index of 72.4 and an LMArena WebDev rating of 1552 (28th of 129). The current leader is Claude Fable 5.1.
How good is Grok 4.5 at agent and automation work?
It ranks 17th of 41 on our agents ranking, completing 42.1% of τ²-Bench banking customer-service tasks and 81.6% of Terminal-Bench 2.1 tasks.
What is Grok 4.5’s context window?
xAI documents a context window of 500,000 tokens (500K). On AA-LCR, which tests reasoning across ~100,000-token document sets, it scores 79.3%.
Ratings: LMArena leaderboard dataset (CC BY 4.0), rescaled for the lens scores · leaderboards to 22 Sep 2026
Evaluations, prices and speed: Artificial Analysis (artificialanalysis.ai) · fetched 23 Sep 2026
Exchange rate: Reserve Bank of Australia, table F11.1 · A$1 = US$0.7123 on 22 Sep 2026 · prices exclude GST
Snapshot 23 Sep 2026 · updated weekly · How the rankings work →