# Claude 1.3 vs Claude Opus 5

> Claude Opus 5 has enough public results to be ranked (#4); Claude 1.3 does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/claude-1-3-vs-claude-opus-5
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Snapshot

| | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | — | 67.7 |
| Rank | — | 4 |
| Context | — | 1M |
| Input $/M | — | $5 |
| Output $/M | — | $25 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 1.3: —
- Claude Opus 5: 67.0 (#5)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| DeepSWE | — | 73.6% |
| FrontierCode | — | 53.4% |
| CursorBench | — | 46.6% |
| LMArena WebDev | — | 1694 |
| FrontierSWE | — | 52% |
| SciCode | — | 56.4% |
| WeirdML | — | 91.8% |
| LMArena Coding | — | 1533 |
| ALE-Bench | — | 2,165 |

## Agentic & Tool Use

- Claude 1.3: —
- Claude Opus 5: 55.5 (#1)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| APEX-Agents | — | 65.8% |
| OSWorld 2.0 | — | 31.4% |
| τ²-bench Banking | — | 48.7% |
| PostTrainBench | — | 35% |
| BALROG | — | 63.4% |
| GBAEval | — | 79.6% |
| GDP.pdf | — | 24% |
| Vending-Bench 2 | — | 11,182 |

## Reasoning

- Claude 1.3: —
- Claude Opus 5: 77.1 (#3)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| ARC-AGI-2 | — | 90.4% |
| SimpleBench | — | 80.6% |
| NYT Connections (extended) | — | 94.3% |
| ARC-AGI-1 | — | 97.5% |
| CritPt | — | 29.1% |
| Chess Puzzles | — | 42% |
| EBR-Bench | — | 45.7% |
| LMArena Hard Prompts | — | 1525 |
| Mystery Game Puzzles | — | 59% |
| DTBench | — | 97.9% |
| LMCA | — | 64.5% |
| Bench to the Future 3 | — | 0.12 |
| Epoch Capabilities Index | — | 162.67 |

## Math

- Claude 1.3: —
- Claude Opus 5: 86.1 (#6)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 85.6% |
| FrontierMath Tier 4 | — | 73.2% |
| OTIS Mock AIME 2024-2025 | — | 98.9% |
| ProofBench | — | 99% |
| LMArena Math | — | 1533 |

## Knowledge

- Claude 1.3: —
- Claude Opus 5: 66.8 (#8)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| GPQA Diamond | — | 93.9% |
| SimpleQA Verified | — | 59.9% |
| LMArena Expert | — | 1558 |
| MMLU | 77% | — |
| TriviaQA | 86.7% | — |

## Multimodal

- Claude 1.3: —
- Claude Opus 5: 51.1 (#6)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| LMArena Vision | — | 1321 |
| Blueprint-Bench 2 | — | 30.4% |
| Furniture Assembly | — | 60.8% |
| LMArena Document | — | 1516 |

## Multilingual

- Claude 1.3: —
- Claude Opus 5: 58.8 (#3)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| LMArena Non-English | — | 1500 |
| LMArena Chinese | — | 1575 |
| LMArena French | — | 1522 |
| LMArena German | — | 1522 |
| LMArena Japanese | — | 1510 |
| LMArena Korean | — | 1526 |
| LMArena Russian | — | 1507 |
| LMArena Spanish | — | 1519 |

## Instruction Following

- Claude 1.3: —
- Claude Opus 5: 79.3 (#5)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| LMArena Instruction Following | — | 1516 |

## Long Context

- Claude 1.3: —
- Claude Opus 5: 46.5 (#20)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| LMArena Longer Query | — | 1516 |

## Writing & Preference

- Claude 1.3: —
- Claude Opus 5: 79.3 (#2)

| Benchmark | Claude 1.3 | Claude Opus 5 |
|---|---|---|
| LMArena Text | — | 1506 |
| LMArena Creative Writing | — | 1491 |
| EQ-Bench Creative Writing | — | 2133 |
| EQ-Bench 4 | — | 1385 |
| LMArena Multi-Turn | — | 1496 |

## FAQ

### Is Claude 1.3 better than Claude Opus 5?

Claude Opus 5 has enough public results to be ranked (#4); Claude 1.3 does not yet, so treat this comparison as directional.

### How many benchmarks do Claude 1.3 and Claude Opus 5 share?

0 benchmarks have published results for both models. Claude 1.3 has 2 scored results on Noometry and Claude Opus 5 has 57.