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Migrating from claude-2.0 to claude-2.1

What changes when you move from claude-2.0 to claude-2.1: prices, limits, features and parameters, read from each company's own pages.

Status
Retired
Shutdown
Jul 21, 2025
Time left
—
Status
Retired
Shutdown
Jul 21, 2025
Time left
—

claude-2.1 is itself retired. Its replacement is claude-opus-4-8.

Prices

USD per 1M tokens, standard tier

Neither model has published per-token prices.

Limits

Tokens

Neither company publishes a context window or output limit for these models.

Benchmarks

Same benchmark, source and setting on both sides
Benchmarkclaude-2.0claude-2.1Change
GPQA DiamondEpoch AI.34.7%33.0%−1.7 pts
OTIS Mock AIME 2024-2025Epoch AI.2.5%1.9%−0.6 pts

A score from one source is never compared with another source's, and company-reported scores are compared only within the same company; settings named where they differ. Data: Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.

Features and parameters

Compare models

Neither company publishes feature facts for these models.

Aliases

All aliases

No aliases point at either model.

Checklist

  1. Change the model string from claude-2.0 to claude-2.1.

Compared from AIWire's published data when this page loaded. Each fact links to the page it came from. Model pages: claude-2.0, claude-2.1.