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  1. Models
  2. Text
  3. Anthropic

Claude Sonnet Latest

Compatibility alias that routes to the newest version of Claude Sonnet. Currently routes to Claude Sonnet 5.5 Thinking.

  • Reasoning
  • Vision
  • Native PDF input
  • Tool Calling
  • Structured Output

Added Mar 1, 2026

Pricing

Auto routing · per 1M tokens
Input
$2.00
Output
$10.00
Cache read
$0.10
Compare provider prices

Specifications

Context window
1M
Max output
128K

Benchmarks

Leaderboard results

These leaderboards tested Claude Sonnet 5.5, another version of this model.

BenchmarkScoreRank on NanoGPT
Epoch AI Benchmarking Hub

Epoch AI data, CC BY 4.0 · Updated Nov 13, 2026

Epoch Capabilities Index

166.6

#8 of 115

FrontierMath v2 (Tiers 1–3)

88.8%

#10 of 83

GPQA Diamond

95.6%

#4 of 119

SimpleQA Verified

46.5%

#37 of 82

FrontierMath v2 (Tier 4)

80.5%

#11 of 67

OTIS Mock AIME 2024–2025

100.0%

#4 of 121

MirrorCode

97.8%

#1 of 39

Chess Puzzles

59.0%

#9 of 82

Mystery Game Puzzles

65.0%

#7 of 77

Filtered and ranked to models on NanoGPT.

Providers

Auto routing is available for this model. Explicit provider selection is not available.

Cache write /M
Auto
Auto
Recommended
$2.00$10.00$0.10$2.50N/AN/A
Batch API
ProviderInputOutputCached inputCache write
Anthropic
Anthropicclaude-sonnet-5-5-thinking
$1.00/M$5.00/M$0.05/M$1.25/M

Reliability

Related text models

Compare Claude Sonnet Latest with similar models from the same provider or model family.

Claude Sonnet 5.5

anthropic/claude-sonnet-5.5

Claude Sonnet 5.5 handles everyday coding, tool-based workflows, visual analysis, and polished writing with a 1M-token context window. This version skips up-front thinking and can reason between tool calls for faster responses; use Thinking for deeper planning and complex problems.

Claude Sonnet 5.5 Thinking

anthropic/claude-sonnet-5.5:thinking

Claude Sonnet 5.5 with adaptive thinking for complex coding, multi-step tool use, visual analysis, and detailed planning. Supports a 1M-token context window and five reasoning effort levels, with stronger thinking available when a task needs it.

Claude Sonnet 5

anthropic/claude-sonnet-5

Claude Sonnet 5 supports coding, agentic workflows, long-context reasoning, computer use, and practical knowledge work.

Claude Sonnet 5 Thinking

anthropic/claude-sonnet-5:thinking

Claude Sonnet 5 with adaptive thinking enabled for complex coding, planning, and agentic work.

Claude Sonnet 4.6

anthropic/claude-sonnet-4.6

Claude Sonnet 4.6 is Anthropic's most capable Sonnet yet — a full upgrade across coding, computer use, long-context reasoning, agent planning, and design. Supports up to a 1M-token context window at Sonnet pricing.

Claude Sonnet 4.6 Thinking

anthropic/claude-sonnet-4.6:thinking

Claude Sonnet 4.6 with extended thinking enabled for tougher coding, planning, and multi‑tool tasks. Ideal for long‑horizon agent workflows and complex problem solving.