Best Anthropic Models for RAG
The best Anthropic model for RAG is Claude Fable 5 — 59.9 intelligence with 1M tokens of context for retrieved passages. Claude Opus 4.8 (55.7) and Claude Opus 4.7 (53.5) round out the top three.
The best AI models for retrieval-augmented generation, ranked by intelligence among models with at least 128K tokens of context — enough to hold retrieved passages plus conversation. RAG pipelines run at volume, so weigh the price and speed columns as hard as the score.
- 1
claude-fable-5ReasoningToolsJSON+159.9 intel · $10.00/M · 1M ctx59.9Intelligence - 2claude-opus-4.8ReasoningToolsJSON+155.7 intel · $5.00/M · 1M ctx55.7Intelligence
- 3claude-opus-4.7ReasoningToolsJSON+153.5 intel · $5.00/M · 1M ctx53.5Intelligence
- 4claude-sonnet-5ReasoningToolsJSON+153.4 intel · $2.00/M · 1M ctx53.4Intelligence
- 5claude-opus-4.6ReasoningToolsJSON+137.8 intel · $5.00/M · 1M ctx37.8Intelligence
- 6claude-sonnet-4.6ReasoningToolsJSON+135.9 intel · $3.00/M · 1M ctx35.9Intelligence
- 7claude-opus-4.5ReasoningToolsJSON+134.7 intel · $5.00/M · 200K ctx34.7Intelligence
- 8claude-sonnet-4.5ReasoningToolsJSON+129.3 intel · $3.00/M · 1M ctx29.3Intelligence
- 9claude-opus-4.1ReasoningToolsJSON+128.2 intel · $15.00/M · 200K ctx28.2Intelligence
- 10claude-opus-4ReasoningToolsVision25.5 intel · $15.00/M · 200K ctx25.5Intelligence
- 11claude-sonnet-4ReasoningToolsVision25.5 intel · $3.00/M · 1M ctx25.5Intelligence
- 12claude-haiku-4.5ReasoningToolsJSON+123.7 intel · $1.00/M · 200K ctx23.7Intelligence
- 13claude-3-haikuToolsVision3.9 intel · $0.250/M · 200K ctx3.9Intelligence
Frequently asked
What is the best Anthropic model for RAG?
The best Anthropic model for RAG is Claude Fable 5 — 59.9 intelligence with 1M tokens of context for retrieved passages. Claude Opus 4.8 (55.7) and Claude Opus 4.7 (53.5) round out the top three.
What's a good alternative to Claude Fable 5?
Claude Opus 4.8 (55.7) is the closest alternative on this metric, followed by Claude Opus 4.7 (53.5). See the full ranking above for the tradeoffs.
How many Anthropic models are there?
modelgrep tracks 15 Anthropic models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by Claude Fable 5. 13 of them qualify for this ranking.