Claude Opus 5
Lineage
- Company
- Anthropic
- Claude Opus family
- 4.64.74.855.5the family
- Assistants that offer it
- No assistant in the ranking names it on a page we have read.
- API price
- not recorded
Links read on 10/11/2026 on company pages, the press as a fallback; a link given for a family applies only to its latest version.
Rank in each benchmark
- General intelligenceEpoch AI, ECI index164.5162.0 to 167.39th out of 71
- User preferenceLMArena, Elo score149013th out of 68
- Agent tasksEpoch AI, APEX-Agents65.8 %55.8 to 75.810th out of 52
- Coding tasksEpoch AI, CursorBench46.6 %8th out of 18
- Code repairEpoch AI, DeepSWE73.6 %3rd out of 26
Each segment of the bar is worth a tenth of the ranking; the 1st groups the best ranked. Rank among models released in 2026 and measured by the benchmark. Sources: Epoch AI, "Capabilities & benchmarking" (CC BY 4.0); LMArena, text with style control (CC BY 4.0); data as of 10 November 2026.
Effort settings
| Setting | Electricity use of a task | Tasks completed | Tokens per task |
|---|---|---|---|
| CursorBench, coding tasks | |||
| low | not estimated | 40.7 % | 31,995 |
| medium | not estimated | 43.3 % | 45,272 |
| high | not estimated | 44.7 % | 61,405 |
| xhigh | not estimated | 46.1 % | 80,094 |
| max | not estimated | 46.6 % | 85,384 |
| DeepSWE, code repair | |||
| low | not estimated | 58.1 % | 19,884 |
| medium | not estimated | 68.9 % | 36,982 |
| high | not estimated | 72.8 % | 64,207 |
| xhigh | not estimated | 73.2 % | 91,672 |
| max | not estimated | 73.6 % | 117,566 |
Estimation methodology
The effort setting says how much the model reasons before answering: the higher it is, the more tokens it writes, and the more electricity the task needs. Tokens per task are measured by Epoch AI.
Electricity: Projet Celsius estimate. Tokens of the task × electricity ofwriting 1,000 tokens for the size of the model (AI Impact Database, IA-0011), × the data centre overhead (PUE). The scope covers computing on the servers and cooling; it does not cover chip manufacturing, training, the network or the device. CursorBench counts tokens read and written together: the range runs from "all read" to "all written". DeepSWE counts tokens written: the range starts from writing alone.
Model size unknown: electricity use is not estimated. Benchmark: a quick question to an assistant needs about 0.3 Wh.
Claude Opus 5 among Anthropic's models, general intelligence
Epoch AI ECI index and its 95% interval, by release date; 12 Anthropic models released in 2026 and measured by the ECI index
Dot: the index measured, at the release dateLine: the 95% intervalClaude Opus 53 names in the "Table" tab
Source: Epoch AI, "Capabilities & benchmarking", ECI index. CC BY 4.0 licence.
Continue in the ranking
The full ranking →CompanyAnthropic12models measuredIts assistant, its models, its governance and the electricity of its data centres.The entry →ModelAnthropicClaude Opus 4.820thout of 71 on general intelligenceThe previous version of Claude Opus.The entry →AssistantClaude74out of 100, 1st out of 10Anthropic's assistant; no page we have read says that it offers Claude Opus 5.The entry →The hub newsletter
This month's ranking, news on the impact of AI and one figure from the AI Impact Database. One newsletter a month at most, free of charge. Past issues
