Model comparison
Claude 2.1 vs Claude 2
- Input
- $8.00
- Output
- $24.00
- Context
- 200K tokens
- Released
- 2023-11-21
- Input
- $8.00
- Output
- $24.00
- Context
- 100K tokens
- Released
- 2023-07-11
Claude 2.1 and Claude 2 split the 4 benchmarks both report evenly; both charge the same $8 per 1M input tokens; Claude 2.1 has the larger context window (200K vs 100K).
Specs and pricing side by side
| Spec | Claude 2.1 | Claude 2 |
|---|---|---|
| Maker | Anthropic | Anthropicsame |
| Released | 2023-11-21 | 2023-07-11 |
| Context window | 200K tokens | 100K tokens |
| Max output | ~4,000 tokens (Claude 2 was trained to… | ~4,000 tokens |
| Input price | $8.00 | $8.00same |
| Output price | $24.00 | $24.00same |
| Parameters | Undisclosed | Undisclosedsame |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text | Textsame |
| Knowledge cutoff | Early 2023 (training data cuts off in early… | Early 2023 |
Benchmarks both models report
| Benchmark | Claude 2.1 | Claude 2 |
|---|---|---|
| Codex HumanEval | 71.2% | 71.2% |
| GSM8K | 88% | 88% |
| MMLU | 78.5% | 78.5% |
| ARC-Challenge | 91% | 91% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick Claude 2.1 if…
- You need the longer context (200K vs 100K).
- Your use case is: long-document analysis: summarizing and querying lengthy manuals, contracts, and financial filings.
Pick Claude 2 if…
- Your use case is: summarizing and Q&A over long documents — technical manuals, financial reports, contracts, or short books.
FAQ
Which is better, Claude 2.1 or Claude 2?
Claude 2.1 and Claude 2 split the 4 benchmarks both report evenly; both charge the same $8 per 1M input tokens; Claude 2.1 has the larger context window (200K vs 100K). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How do Claude 2.1 and Claude 2 pricing compare?
Claude 2.1: $8.00 input, $24.00 output. Claude 2: $8.00 input, $24.00 output (list API prices as published by each maker).
What are the context windows of Claude 2.1 and Claude 2?
Claude 2.1 offers 200K tokens with up to ~4,000 tokens (Claude 2 was trained to generate coherent documents up to 4,000 tokens) output; Claude 2 offers 100K tokens with up to ~4,000 tokens output.
Is Claude 2.1 newer than Claude 2?
Claude 2.1 was released 2023-11-21; Claude 2 was released 2023-07-11.