Model comparison
Claude 2.1 vs Claude 3 Sonnet
Claude 3 Sonnet is the stronger model overall, scoring 29.0 to 25.2 on the Noometry Index.
Last verified . 6 shared benchmarks.
Summary
- They share 6 benchmarks with published results for both. Claude 2.1 scores higher in 1 category and Claude 3 Sonnet in 3 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Claude 3 Sonnet leads 21.1 to 15.4.
- The biggest single-benchmark swing is GPQA Diamond: 33% for Claude 2.1 and 40.6% for Claude 3 Sonnet.
Side by side
| Claude 2.1 | Claude 3 Sonnet | |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | 25.2 | 29.0 |
| Released | 2023-11-21 | 2024-02-29 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 7 | 30 |
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Category by category
Coding Claude 3 Sonnet leads
Claude 2.1: 26.2 (#327), Claude 3 Sonnet: 29.6 (#302)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| WeirdML | 7.1% | 10.2% |
| BigCodeBench Instruct | — | 42.7% |
| LMArena Coding | — | 1223 |
| BigCodeBench Complete | — | 53.8% |
| HumanEval+ | — | 64% |
| MBPP+ | — | 69.3% |
Reasoning Too close to call
Claude 2.1: 21.4 (#221), Claude 3 Sonnet: 20.5 (#237)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| DTBench | 51% | 53.6% |
| Epoch Capabilities Index | 119.27 | 120.7 |
| LMArena Hard Prompts | — | 1197 |
| ForecastBench | 54.2 | — |
| WinoGrande | — | 75.1% |
Math Too close to call
Claude 2.1: 10.2 (#315), Claude 3 Sonnet: 10.7 (#310)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 2.5% |
| LMArena Math | — | 1213 |
| MATH Level 5 | — | 18.2% |
Knowledge Claude 3 Sonnet leads
Claude 2.1: 15.4 (#292), Claude 3 Sonnet: 21.1 (#276)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| GPQA Diamond | 33% | 40.6% |
| MMLU | 73.5% | 75.9% |
| LMArena Expert | — | 1173 |
Multimodal Not comparable
Claude 2.1: —, Claude 3 Sonnet: 25.2 (#125)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| LMArena Vision | — | 984 |
Multilingual Not comparable
Claude 2.1: —, Claude 3 Sonnet: 37.8 (#234)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| LMArena Non-English | — | 1205 |
| LMArena Chinese | — | 1189 |
| LMArena French | — | 1229 |
| LMArena German | — | 1204 |
| LMArena Japanese | — | 1131 |
| LMArena Korean | — | 1128 |
| LMArena Russian | — | 1227 |
| LMArena Spanish | — | 1204 |
Instruction Following Not comparable
Claude 2.1: —, Claude 3 Sonnet: 62.8 (#235)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| LMArena Instruction Following | — | 1199 |
Long Context Not comparable
Claude 2.1: —, Claude 3 Sonnet: 36.7 (#228)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| LMArena Longer Query | — | 1211 |
Writing & Preference Not comparable
Claude 2.1: —, Claude 3 Sonnet: 42.1 (#238)
| Benchmark | Claude 2.1 | Claude 3 Sonnet |
|---|---|---|
| LMArena Text | — | 1218 |
| LMArena Creative Writing | — | 1186 |
| LMArena Multi-Turn | — | 1227 |
Frequently asked questions
Is Claude 2.1 better than Claude 3 Sonnet?
Claude 3 Sonnet is the stronger model overall, scoring 29.0 to 25.2 on the Noometry Index.
Is Claude 2.1 or Claude 3 Sonnet better for coding?
Claude 3 Sonnet scores higher on coding benchmarks: 29.6 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Claude 3 Sonnet share?
6 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Claude 3 Sonnet has 30.