Claude 2.1
Analysis Summary
Claude 2.1 is an older Anthropic model released in November 2023. With an intelligence index of 3.9, GPQA of 0.319, and LiveCodeBench of 0.195, it sits well below current-generation models across all key capability dimensions. It has been superseded by Claude 3, 3.5, 3.7, and the Claude 4 family.
For business use, it is not recommended for new deployments. Reasoning, coding, and instruction-following performance are all materially weaker than what is available from Anthropic and other providers today. It lacks agentic index data, further limiting its suitability for tool-use or autonomous workflows.
Teams still running Claude 2.1 in production should prioritise migration to a current-generation model. Even mid-tier current models from Mistral or Meta offer substantially better performance at comparable or lower cost.
Assessed June 17, 2026
Editorial notes
Claude 2.1 from Anthropic is a significantly older model with limited benchmark performance across reasoning, coding, and instruction following; superseded by multiple Claude generations and not recommended for new deployments.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How Claude 2.1 compares
Claude 2.1 ranks #331 of 382 AI models we track for overall intelligence, #91 of 111 for coding. Claude 2.1 is currently free to use via OpenRouter.
Benchmark Scores
Intelligence
Technical
Benchmark data from Artificial Analysis and Hugging Face
How does Claude 2.1 stack up?
Compare side-by-side with other emerging models.
Model Information
| Provider | Anthropic |
| Release Date | November 21, 2023 |
| Status | Active |
Leaderboard Categories
Frequently asked questions about Claude 2.1
How much does Claude 2.1 cost?
Claude 2.1 is currently available for free via OpenRouter.
Is Claude 2.1 good for coding?
On our coding benchmark index, Claude 2.1 ranks #91 of 111 models, placing it in the broader range of the field for code generation and debugging.
Who created Claude 2.1?
Claude 2.1 is developed by Anthropic and was released on November 21, 2023.
