Longest-Context Anthropic Models
Claude Opus 5 (Fast) has the largest context window of any Anthropic model, at 1M tokens. Claude Opus 5 (1M) and Claude Sonnet 5 (1M) round out the top three.
AI models with the largest context windows, ranked by token capacity. The best large language models for long documents, codebases and extended conversations.
- 1
claude-opus-5-fastReasoningToolsJSON+1$10.00/M1MContext - 2claude-opus-5ReasoningToolsJSON+160.7 intel · $5.00/M1MContext
- 3claude-sonnet-5ReasoningToolsJSON+153.4 intel · $2.00/M1MContext
- 4claude-sonnet-5:batchReasoningToolsJSON+153.4 intel · $1.00/M1MContext
- 5claude-fable-5ReasoningToolsJSON+159.9 intel · $10.00/M1MContext
- 6claude-fable-5:batchReasoningToolsJSON+159.9 intel · $5.00/M1MContext
- 7claude-opus-4.8-fastReasoningToolsJSON+1$10.00/M1MContext
- 8claude-opus-4.8ReasoningToolsJSON+155.7 intel · $5.00/M1MContext
- 9claude-opus-4.8:batchReasoningToolsJSON+155.7 intel · $2.50/M1MContext
- 10claude-opus-4.7-fastReasoningToolsJSON+1$30.00/M1MContext
- 11claude-opus-4.7ReasoningToolsJSON+153.5 intel · $5.00/M1MContext
- 12claude-opus-4.7:batchReasoningToolsJSON+153.5 intel · $2.50/M1MContext
- 13claude-sonnet-4.6ReasoningToolsJSON+135.9 intel · $3.00/M1MContext
- 14claude-opus-4.6ReasoningToolsJSON+137.8 intel · $5.00/M1MContext
- 15claude-opus-4.6:batchReasoningToolsJSON+137.8 intel · $2.50/M1MContext
- 16claude-sonnet-4.5ReasoningToolsJSON+129.3 intel · $3.00/M1MContext
- 17claude-sonnet-4.5:batchReasoningToolsJSON+129.3 intel · $1.50/M1MContext
- 18claude-sonnet-4ReasoningToolsVision25.5 intel · $3.00/M1MContext
- 19claude-opus-4.5ReasoningToolsJSON+134.7 intel · $5.00/M200KContext
- 20claude-opus-4.5:batchReasoningToolsJSON+134.7 intel · $2.50/M200KContext
- 21claude-haiku-4.5ReasoningToolsJSON+123.7 intel · $1.00/M200KContext
- 22claude-haiku-4.5:batchReasoningToolsJSON+123.7 intel · $0.500/M200KContext
- 23claude-opus-4.1ReasoningToolsJSON+128.2 intel · $15.00/M200KContext
- 24claude-opus-4.1:batchReasoningToolsJSON+128.2 intel · $7.50/M200KContext
- 25claude-opus-4ReasoningToolsVision25.5 intel · $15.00/M200KContext
Frequently asked
Which Anthropic model has the largest context window?
Claude Opus 5 (Fast) has the largest context window of any Anthropic model, at 1M tokens. Claude Opus 5 (1M) and Claude Sonnet 5 (1M) round out the top three.
What's a good alternative to Claude Opus 5 (Fast)?
Claude Opus 5 (1M) is the closest alternative on this metric, followed by Claude Sonnet 5 (1M). See the full ranking above for the tradeoffs.
How many Anthropic models are there?
modelgrep tracks 26 Anthropic models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by Claude Opus 5. 25 of them qualify for this ranking.