Claude Opus 4.8 benchmarks
Claude Opus 4.8 is a proprietary model from Anthropic, released 28 May 2026. It ranks 20th of 51 on our overall leaderboard and 14th of 51 for reasoning. At A$14.04 per million tokens (blended), it costs 3.9× the median model we track. It can run with requests kept in Australia on AWS Bedrock in Sydney and Melbourne.
- CONTEXT WINDOW
- 1,000,000 tokens
- MAX OUTPUT
- 128,000 tokens
- INPUT
- text, image
- WEIGHTS
- Proprietary
- RELEASED
- 28 May 2026
Claude Opus 4.8 across our rankings.
Benchmark results.
Independent test scores are for the adaptive reasoning, max effort setting. “Among tracked” ranks Claude Opus 4.8 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 | 41.8 | #17 of 51 | Adaptive reasoning, max effort |
| AA Coding Index | 74.3 | #15 of 42 | Adaptive reasoning, max effort |
| GPQA Diamond | 92.0% | #22 of 44 | Adaptive reasoning, max effort |
| Humanity’s Last Exam | 48.7% | #8 of 51 | Adaptive reasoning, max effort |
| AA-LCR | 77.7% | #43 of 51 | Adaptive reasoning, max effort |
| Terminal-Bench 2.1 | 84.6% | #12 of 42 | Adaptive reasoning, max effort |
| τ²-Bench (banking) | 34.2% | #26 of 41 | Adaptive reasoning, max effort |
| SciCode | 54.4% | #24 of 46 | Adaptive reasoning, max effort |
| BLIND HUMAN VOTES · LMARENA | |||
| LMArena Text52,535 votes · ±4 | 1481 | #18 of 42 | #21 of 402 on LMArena · 13 Sep 2026 |
| LMArena WebDev16,020 votes · ±6 | 1556 | #22 of 45 | #26 of 129 on LMArena · 22 Sep 2026 |
| LMArena Vision15,274 votes · ±7 | 1283 | #16 of 33 | #18 of 152 on LMArena · 13 Sep 2026 |
| LMArena Document11,551 votes · ±7 | 1486 | #7 of 26 | #9 of 44 on LMArena · 13 Sep 2026 |
| LMArena Search70,998 votes · ±6 | 1195 | #11 of 12 | #13 of 34 on LMArena · 24 Aug 2026 |
| LMArena Agent39,731 sessions | #6 | #5 of 37 | #6 of 46 on LMArena · 15 Sep 2026 |
What Claude Opus 4.8 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$7.02 | US$5.00 |
| Output tokens | A$35.10 | US$25.00 |
| Blended (3 in : 1 out) | A$14.04 | US$10.00 |
| JOB | COST (AUD) | MEDIAN MODEL |
|---|---|---|
| Customer support replyPER 1,000 REPLIES | A$24.57 | ≈ A$6.58 |
| Summarise a 30-page documentPER 100 DOCUMENTS | A$16.85 | ≈ A$4.74 |
| Agentic coding taskPER 10 TASKS | A$13.34 | ≈ A$3.72 |
Running Claude Opus 4.8 in Australia.
It can run with requests kept in Australia on AWS Bedrock in Sydney and Melbourne. How the platforms compare →
| PLATFORM | AVAILABILITY | DETAIL |
|---|---|---|
| AWS Bedrock · Sydney | AU ROUTING | |
| AWS Bedrock · Melbourne | IN REGION | In-region through the bedrock-mantle endpoint (Anthropic Messages API); the standard runtime endpoint uses the au. profile. Provider docs, checked 23 Sep 2026 |
| Azure · Australia East | NOT IN AU | |
| Google Vertex AI · Sydney | GLOBAL |
Compare it with.
Claude Opus 4.8, answered.
How much does Claude Opus 4.8 cost in Australian dollars?
Claude Opus 4.8 lists at US$5.00 per million input tokens and US$25.00 per million output tokens — A$7.02 and A$35.10 at A$1 = US$0.7123 (RBA, 22 Sep 2026), excluding GST. A typical customer support reply works out at about A$24.57 per 1,000 replies, before any reasoning tokens.
Can I use Claude Opus 4.8 in Australia with data kept onshore?
Claude Opus 4.8 can run with requests kept in Australia on AWS Bedrock in Sydney and Melbourne. Availability comes from the cloud providers’ own documentation; check your provider’s current terms before relying on it for data-residency obligations.
Is Claude Opus 4.8 good for coding?
It ranks 15th of 42 on our coding ranking, with an Artificial Analysis Coding Index of 74.3 and an LMArena WebDev rating of 1556 (26th of 129). The current leader is Claude Fable 5.1.
How good is Claude Opus 4.8 at agent and automation work?
It ranks 18th of 41 on our agents ranking, completing 34.2% of τ²-Bench banking customer-service tasks and 84.6% of Terminal-Bench 2.1 tasks.
What is Claude Opus 4.8’s context window?
Anthropic documents a context window of 1,000,000 tokens (1M), with up to 128,000 output tokens. On AA-LCR, which tests reasoning across ~100,000-token document sets, it scores 77.7%.
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 →