Model comparison
Claude 2.1 vs Inkling
Inkling is the stronger model overall, scoring 44.1 to 25.2 on the Noometry Index.
Last verified . 5 shared benchmarks.
Summary
- They share 5 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and Inkling in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Inkling leads 55.1 to 15.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 88.9% for Inkling.
- Inkling has downloadable open weights; the other is API-only.
Side by side
| Claude 2.1 | Inkling | |
|---|---|---|
| Provider | Anthropic | Thinking Machines Lab |
| Noometry Index | 25.2 | 44.1 |
| Released | 2023-11-21 | 2026-07-15 |
| Weights | Proprietary | Open |
| Context window | — | 66K |
| Max output | — | 66K |
| Input $ / M tokens | — | $1.87 |
| Output $ / M tokens | — | $4.68 |
| Results tracked | 7 | 41 |
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Category by category
Coding Inkling leads
Claude 2.1: 26.2 (#327), Inkling: 34.5 (#234)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| WeirdML | 7.1% | 32.3% |
| FrontierCode | — | 14% |
| LMArena WebDev | — | 1413 |
| FrontierSWE | — | 4.1% |
| SciCode | — | 47% |
| LMArena Coding | — | 1464 |
| ALE-Bench | — | 946 |
Agentic & Tool Use Not comparable
Claude 2.1: —, Inkling: 29.6 (#85)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| APEX-Agents | — | 33.8% |
| τ²-bench Banking | — | 25% |
Reasoning Inkling leads
Claude 2.1: 21.4 (#221), Inkling: 40.4 (#56)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| DTBench | 51% | 87.5% |
| Epoch Capabilities Index | 119.27 | 148.54 |
| ARC-AGI-2 | — | 36.5% |
| SimpleBench | — | 50% |
| ARC-AGI-1 | — | 79.5% |
| CritPt | — | 5.4% |
| Chess Puzzles | — | 21% |
| LMArena Hard Prompts | — | 1451 |
| LMCA | — | 37.6% |
| ForecastBench | 54.2 | — |
Math Inkling leads
Claude 2.1: 10.2 (#315), Inkling: 31.3 (#225)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 88.9% |
| FrontierMath (Tiers 1-3) | — | 33.3% |
| FrontierMath Tier 4 | — | 4.9% |
| ProofBench | — | 0% |
| LMArena Math | — | 1479 |
Knowledge Inkling leads
Claude 2.1: 15.4 (#292), Inkling: 55.1 (#49)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| GPQA Diamond | 33% | 88.3% |
| SimpleQA Verified | — | 40.3% |
| LMArena Expert | — | 1465 |
| MMLU | 73.5% | — |
Multilingual Not comparable
Claude 2.1: —, Inkling: 54.0 (#52)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| LMArena Non-English | — | 1434 |
| LMArena Chinese | — | 1490 |
| LMArena French | — | 1458 |
| LMArena German | — | 1446 |
| LMArena Japanese | — | 1429 |
| LMArena Korean | — | 1404 |
| LMArena Russian | — | 1429 |
| LMArena Spanish | — | 1448 |
Instruction Following Not comparable
Claude 2.1: —, Inkling: 75.1 (#71)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| LMArena Instruction Following | — | 1426 |
Long Context Not comparable
Claude 2.1: —, Inkling: 43.8 (#86)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| LMArena Longer Query | — | 1434 |
Writing & Preference Not comparable
Claude 2.1: —, Inkling: 65.2 (#51)
| Benchmark | Claude 2.1 | Inkling |
|---|---|---|
| LMArena Text | — | 1441 |
| LMArena Creative Writing | — | 1387 |
| EQ-Bench Creative Writing | — | 1611 |
| EQ-Bench 4 | — | 1226 |
| LMArena Multi-Turn | — | 1436 |
Frequently asked questions
Is Claude 2.1 better than Inkling?
Inkling is the stronger model overall, scoring 44.1 to 25.2 on the Noometry Index.
Is Claude 2.1 or Inkling better for coding?
Inkling scores higher on coding benchmarks: 34.5 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Inkling share?
5 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Inkling has 41.