# Claude 2.1 vs Claude Instant

> Claude 2.1 has enough public results to be ranked (#345); Claude Instant does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/claude-2-1-vs-claude-instant
- Last updated: 2026-10-11
- Shared benchmarks: 3

## Summary

- They share 3 benchmarks with published results for both. Claude 2.1 scores higher in 1 category and Claude Instant in 0 categories; one gap is clear of the uncertainty.
- The biggest single-benchmark swing is DTBench: 51% for Claude 2.1 and 45.8% for Claude Instant.

## Snapshot

| | Claude 2.1 | Claude Instant |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | 25.2 | 29.5 |
| Rank | 345 | — |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 2.1: 26.2 (#327)
- Claude Instant: —

| Benchmark | Claude 2.1 | Claude Instant |
|---|---|---|
| WeirdML | 7.1% | — |
| HumanEval+ | — | 50.6% |

## Reasoning

- Claude 2.1: 21.4 (#221)
- Claude Instant: 19.6

| Benchmark | Claude 2.1 | Claude Instant |
|---|---|---|
| DTBench | 51% | 45.8% |
| Epoch Capabilities Index | 119.27 | 120.28 |
| ForecastBench | 54.2 | — |

## Math

- Claude 2.1: 10.2 (#315)
- Claude Instant: —

| Benchmark | Claude 2.1 | Claude Instant |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | — |
| GSM8K | — | 86.7% |

## Knowledge

- Claude 2.1: 15.4 (#292)
- Claude Instant: —

| Benchmark | Claude 2.1 | Claude Instant |
|---|---|---|
| MMLU | 73.5% | 73.4% |
| GPQA Diamond | 33% | — |
| ARC (AI2) Challenge | — | 86.3% |
| TriviaQA | — | 78.9% |

## FAQ

### Is Claude 2.1 better than Claude Instant?

Claude 2.1 has enough public results to be ranked (#345); Claude Instant does not yet, so treat this comparison as directional.

### How many benchmarks do Claude 2.1 and Claude Instant share?

3 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Claude Instant has 7.