# Claude 2 vs GPT-5.6 Terra

> GPT-5.6 Terra is the stronger model overall, scoring 59.1 to 24.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-2-vs-gpt-5-6-terra
- Last updated: 2026-10-10
- Shared benchmarks: 4

## Summary

- They share 4 benchmarks with published results for both. Claude 2 scores higher in 0 categories and GPT-5.6 Terra in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.6 Terra leads 81.5 to 8.7.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 2.5% for Claude 2 and 99.7% for GPT-5.6 Terra.

## Snapshot

| | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 24.7 | 59.1 |
| Rank | 342 | 15 |
| Context | — | 1.05M |
| Input $/M | — | $2 |
| Output $/M | — | $12 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2: —
- GPT-5.6 Terra: 57.1 (#16)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| DeepSWE | — | 69.6% |
| FrontierCode | — | 41.3% |
| CursorBench | — | 41.3% |
| LMArena WebDev | — | 1520 |
| SciCode | — | 55% |
| WeirdML | — | 78.3% |
| LMArena Coding | — | 1484 |
| ALE-Bench | — | 1,951 |
| HumanEval+ | 61.6% | — |

## Agentic & Tool Use

- Claude 2: —
- GPT-5.6 Terra: 40.2 (#23)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| APEX-Agents | — | 58.2% |
| BALROG | — | 53.2% |
| GDP.pdf | — | 24.7% |
| Vending-Bench 2 | — | 7,343 |

## Reasoning

- Claude 2: 20.8 (#213)
- GPT-5.6 Terra: 60.6 (#19)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| DTBench | 51.9% | 93.3% |
| Epoch Capabilities Index | 120.08 | 159.31 |
| ARC-AGI-2 | — | 83.9% |
| SimpleBench | — | 48.9% |
| Kagi LLM Benchmark | — | 51.3% |
| NYT Connections (extended) | — | 78.4% |
| ARC-AGI-1 | — | 96.5% |
| CritPt | — | 30% |
| Chess Puzzles | — | 54% |
| LMArena Hard Prompts | — | 1467 |
| Mystery Game Puzzles | — | 35% |
| LMCA | — | 55% |
| Surface Evolver Bench | — | 83.8% |

## Math

- Claude 2: 8.7 (#314)
- GPT-5.6 Terra: 81.5 (#10)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 99.7% |
| FrontierMath (Tiers 1-3) | — | 86% |
| FrontierMath Tier 4 | — | 70.7% |
| ProofBench | — | 74% |
| LMArena Math | — | 1463 |
| MATH Level 5 | 11.7% | — |

## Knowledge

- Claude 2: 17.0 (#282)
- GPT-5.6 Terra: 61.3 (#27)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| GPQA Diamond | 34.7% | 93.3% |
| SimpleQA Verified | — | 43.2% |
| LMArena Expert | — | 1492 |
| MMLU | 78.5% | — |
| TriviaQA | 87.5% | — |

## Multimodal

- Claude 2: —
- GPT-5.6 Terra: 47.5 (#10)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| LMArena Vision | — | 1271 |
| Blueprint-Bench 2 | — | 30.8% |
| Furniture Assembly | — | 54.2% |
| LMArena Document | — | 1472 |

## Multilingual

- Claude 2: —
- GPT-5.6 Terra: 54.5 (#42)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| LMArena Non-English | — | 1439 |
| LMArena Chinese | — | 1514 |
| LMArena French | — | 1476 |
| LMArena German | — | 1462 |
| LMArena Japanese | — | 1446 |
| LMArena Korean | — | 1420 |
| LMArena Russian | — | 1450 |
| LMArena Spanish | — | 1455 |

## Instruction Following

- Claude 2: —
- GPT-5.6 Terra: 76.6 (#38)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| LMArena Instruction Following | — | 1453 |

## Long Context

- Claude 2: —
- GPT-5.6 Terra: 44.4 (#64)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| LMArena Longer Query | — | 1452 |

## Writing & Preference

- Claude 2: —
- GPT-5.6 Terra: 70.4 (#21)

| Benchmark | Claude 2 | GPT-5.6 Terra |
|---|---|---|
| LMArena Text | — | 1446 |
| LMArena Creative Writing | — | 1411 |
| EQ-Bench Creative Writing | — | 1855 |
| EQ-Bench 4 | — | 1234 |
| LMArena Multi-Turn | — | 1451 |

## FAQ

### Is Claude 2 better than GPT-5.6 Terra?

GPT-5.6 Terra is the stronger model overall, scoring 59.1 to 24.7 on the Noometry Index.

### How many benchmarks do Claude 2 and GPT-5.6 Terra share?

4 benchmarks have published results for both models. Claude 2 has 8 scored results on Noometry and GPT-5.6 Terra has 52.