Anthropic, proprietary

# Claude 2.1

> Claude 2.1 by Anthropic, released November 2023. Ranked #345 of 354 with a Noometry Index of 25.2. Scores, sources and comparisons.
- Canonical page: https://noometry.com/models/claude-2-1
- Last updated: 2026-10-10
- Title: Claude 2.1 Benchmarks, Price & Rank (October 2026)

Claude 2.1 by Anthropic ranks 345th of 354 ranked models on the Noometry Index as of October 2026, with a score of 25.2. Its strongest category is reasoning, where it ranks 221st.

Last verified October 10, 2026

## Specifications

- **Noometry rank:** #345 of 354
- **Index score:** 25.2
- **Evidence:** Reported 7 results
- **Provider:** [Anthropic](https://noometry.com/providers/anthropic)
- **Released:** November 21, 2023
- **Weights:** Proprietary
- **Reasoning:** Unknown
- **Context window:** —
- **Max output:** —
- **Input price:** Not listed
- **Output price:** Not listed
- **Blended price:** Not listed
- **Output speed:** Not measured
- **Value:** Not ranked
- **Knowledge cutoff:** Unknown

## Category scores

Each category score combines every public result we have in that category.

Claude 2.1 category scores

1.  Coding 26.2
2.  Reasoning 21.4
3.  Math 10.2
4.  Knowledge 15.4
5.  0102030

Claude 2.1 category ranks
| Category | Score | Rank | Results |
| --- | --- | --- | --- |
| [Coding](https://noometry.com/best/coding) | 26.2 | #327 | 1 |
| [Reasoning](https://noometry.com/best/reasoning) | 21.4 | #221 | 1 |
| [Math](https://noometry.com/best/math) | 10.2 | #315 | 1 |
| [Knowledge](https://noometry.com/best/knowledge) | 15.4 | #292 | 1 |

## Strengths and weaknesses

Categories where Claude 2.1 places highest and lowest among the models ranked in each, with its score against that category's median.

### Strongest categories

Claude 2.1: strongest categories
| Category | Score | vs median | Rank |
| --- | --- | --- | --- |
| [Reasoning](https://noometry.com/best/reasoning) | 21.4 | −2.2 | #221 of 350, top 64% |
| [Knowledge](https://noometry.com/best/knowledge) | 15.4 | −21.9 | #292 of 314, top 93% |

### Weakest categories

Claude 2.1: weakest categories
| Category | Score | vs median | Rank |
| --- | --- | --- | --- |
| [Math](https://noometry.com/best/math) | 10.2 | −26.4 | #315 of 327, top 97% |
| [Coding](https://noometry.com/best/coding) | 26.2 | −12.5 | #327 of 340, top 97% |

## Closest competitors

The models ranked just above and below Claude 2.1. When scores are this close, price and speed are often the better way to choose.

Models ranked closest to Claude 2.1
| Model | Rank | Score | Blended $/M | Speed |  |
| --- | --- | --- | --- | --- | --- |
| [Gemma 2 9B](https://noometry.com/models/gemma-2-9b) | #341 | 25.9 | — | — | [Compare](https://noometry.com/compare/claude-2-1-vs-gemma-2-9b) |
| [Dolly 2.0-12b](https://noometry.com/models/dolly-2-0-12b) | #342 | 25.5 | — | — | [Compare](https://noometry.com/compare/claude-2-1-vs-dolly-2-0-12b) |
| [GPT-4o mini](https://noometry.com/models/gpt-4o-mini) | #343 | 25.5 | $0.26 | 120 | [Compare](https://noometry.com/compare/claude-2-1-vs-gpt-4o-mini) |
| [Llama 3-8B](https://noometry.com/models/llama-3-8b) | #344 | 25.5 | — | — | [Compare](https://noometry.com/compare/claude-2-1-vs-llama-3-8b) |
| [Claude 2](https://noometry.com/models/claude-2) | #346 | 25.0 | — | — | [Compare](https://noometry.com/compare/claude-2-vs-claude-2-1) |
| [DeepSeek LLM 67B](https://noometry.com/models/deepseek-llm-67b) | #347 | 24.9 | — | — | [Compare](https://noometry.com/compare/claude-2-1-vs-deepseek-llm-67b) |
| [Llama 13b](https://noometry.com/models/llama-13b) | #348 | 24.4 | — | — | [Compare](https://noometry.com/compare/claude-2-1-vs-llama-13b) |
| [Llama 2-70B](https://noometry.com/models/llama-2-70b) | #349 | 24.4 | — | — | [Compare](https://noometry.com/compare/claude-2-1-vs-llama-2-70b) |

Sponsored placements are available on pages like this one. [Advertise on Noometry](https://noometry.com/advertise)

## Benchmark results

Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.

### Coding

Claude 2.1 Coding benchmark results
| Benchmark | Score | Position | Setting | Source | Date |
| --- | --- | --- | --- | --- | --- |
| [WeirdML](https://noometry.com/benchmarks/weirdml) | 7.1% | #116 of 119, top 98% |  | [Epoch AI](https://epoch.ai/benchmarks) |  |

### Reasoning

Claude 2.1 Reasoning benchmark results
| Benchmark | Score | Position | Setting | Source | Date |
| --- | --- | --- | --- | --- | --- |
| [DTBench](https://noometry.com/benchmarks/dtbench) | 51% | #133 of 151, top 89% |  | [Epoch AI](https://epoch.ai/benchmarks) |  |
| [Epoch Capabilities Index](https://noometry.com/benchmarks/epoch-capabilities-index) | 119.27 | #172 of 213, top 81% |  | [Epoch AI](https://epoch.ai/eci) | 2023-11-21 |
| [ForecastBench](https://noometry.com/benchmarks/forecastbench) | 54.2 | #68 of 72, top 95% |  | [Epoch AI](https://epoch.ai/benchmarks) |  |

### Math

Claude 2.1 Math benchmark results
| Benchmark | Score | Position | Setting | Source | Date |
| --- | --- | --- | --- | --- | --- |
| [OTIS Mock AIME 2024-2025](https://noometry.com/benchmarks/otis-mock-aime) | 1.9% | #161 of 173, top 94% |  | [Epoch AI](https://epoch.ai/benchmarks) | 2025-03-07 |

### Knowledge

Claude 2.1 Knowledge benchmark results
| Benchmark | Score | Position | Setting | Source | Date |
| --- | --- | --- | --- | --- | --- |
| [GPQA Diamond](https://noometry.com/benchmarks/gpqa-diamond) | 33% | #164 of 186, top 89% |  | [Epoch AI](https://epoch.ai/benchmarks) | 2025-01-27 |
| [MMLU](https://noometry.com/benchmarks/mmlu) | 73.5% | #37 of 81, top 46% |  | [Epoch AI](https://epoch.ai/benchmarks) |  |

## Compare Claude 2.1

-   [Claude 2.1 vs Claude 2](https://noometry.com/compare/claude-2-vs-claude-2-1)
-   [Claude 2.1 vs Llama 3-8B](https://noometry.com/compare/claude-2-1-vs-llama-3-8b)
-   [Claude 2.1 vs GPT-4o mini](https://noometry.com/compare/claude-2-1-vs-gpt-4o-mini)
-   [Claude 2.1 vs DeepSeek LLM 67B](https://noometry.com/compare/claude-2-1-vs-deepseek-llm-67b)
-   [Claude 2.1 vs Dolly 2.0-12b](https://noometry.com/compare/claude-2-1-vs-dolly-2-0-12b)
-   [Claude 2.1 vs Llama 13b](https://noometry.com/compare/claude-2-1-vs-llama-13b)
-   [Claude 2.1 vs GPT-6 Astra](https://noometry.com/compare/claude-2-1-vs-gpt-6-astra)
-   [Claude 2.1 vs Gemini 3.8 Flash](https://noometry.com/compare/claude-2-1-vs-gemini-3-8-flash)
-   [Claude 2.1 vs Kimi K3](https://noometry.com/compare/claude-2-1-vs-kimi-k3)
-   [Claude 2.1 vs Grok 4.6](https://noometry.com/compare/claude-2-1-vs-grok-4-6)
-   [Claude 2.1 vs Qwen3.8 Max](https://noometry.com/compare/claude-2-1-vs-qwen3-8-max)
-   [Claude 2.1 vs GLM-5.3](https://noometry.com/compare/claude-2-1-vs-glm-5-3)
-   [Claude 2.1 vs Muse Spark 1.3](https://noometry.com/compare/claude-2-1-vs-muse-spark-1-3)
-   [Claude 2.1 vs DeepSeek V4 Pro](https://noometry.com/compare/claude-2-1-vs-deepseek-v4-pro)

## Other Anthropic models

-   [Claude Fable 5.1](https://noometry.com/models/claude-fable-5-1)69.0
-   [Claude Opus 5.5](https://noometry.com/models/claude-opus-5-5)68.6
-   [Claude Opus 5](https://noometry.com/models/claude-opus-5)67.8
-   [Claude Fable 5](https://noometry.com/models/claude-fable-5)66.8
-   [Claude Sonnet 5.5](https://noometry.com/models/claude-sonnet-5-5)61.9
-   [Claude Opus 4.8](https://noometry.com/models/claude-opus-4-8)60.7
-   [Claude Opus 4.7](https://noometry.com/models/claude-opus-4-7)58.3
-   [Claude Opus 4.6](https://noometry.com/models/claude-opus-4-6)58.2

## Frequently asked questions

### How good is Claude 2.1?

Claude 2.1 by Anthropic ranks 345th of 354 ranked models on the Noometry Index as of October 2026, with a score of 25.2. Its strongest category is reasoning, where it ranks 221st.

### Is Claude 2.1 open source?

No. Claude 2.1 is proprietary and available only through Anthropic's API and partner platforms.

### What are Claude 2.1's strengths and weaknesses?

Relative to other ranked models, Claude 2.1 places best in reasoning, knowledge and lowest in math, coding.

### What is Claude 2.1 best at?

Its best category is reasoning, where it ranks 221st on Noometry.

### Cite this page

Noometry. (2026). Claude 2.1 benchmarks and pricing. Retrieved October 10, 2026, from https://noometry.com/models/claude-2-1

Quote Noometry with a link back to this page. It is also available in [Markdown](https://noometry.com/md/models/claude-2-1.md).