LANGUAGE & CODING / Anthropic

Claude Sonnet 5.5

General coding, visual tasks, and document workflows.

Checked 2026-10-05CodingAgents & toolsDocuments & writingVisual understandingEveryday tasks

PRICE / USD

$2

Per 1 million output tokens · input billed separately

Input / 1M tokens: $2
Output / 1M tokens: $10
Cached input / 1M tokens: $0.2
Cache write / 1M tokens: $2.5

Claude API · standard processing

Cache write shown for 5-minute TTL; 1-hour writes cost $4/MTok.

Claude API pricing ↗

SPEED & CAPABILITIES

Not benchmarked

Provider description: Fast. This does not qualify for the numeric (fast) badge.

Anthropic describes Sonnet 5.5 latency as Fast relative to its own models.

Claude model overview ↗

Model score: 56
Our own output-speed measurement: Not measured
Context window: 1,000,000
API model ID: claude-sonnet-5-5

Artificial Analysis tested Claude Sonnet 5.5 · max, default fallback. This mostly English, text-based index is not a guarantee of performance on your workload. Artificial Analysis · Claude Sonnet 5.5 · max, default fallback ↗

Supports adaptive thinking; the provider's speed label is not our benchmark.

Suggested starting role: everyday coding. A general coding and document-work option with adaptive thinking and a provider-reported fast latency category. Consider it for iterative implementation and review. This is editorial guidance, not a benchmark score.

Prices are USD per million native tokens, with input and output billed separately. Extra reasoning tokens, retries, tool calls, cache writes, storage, and taxes can change the bill. Use-case tags reflect our reading of official capabilities, not measured rankings.

Sources & methodology

Claude model overview ↗ Checked 2026-10-05

Claude API pricing ↗ Checked 2026-10-05

Artificial Analysis · Claude Sonnet 5.5 · max, default fallback ↗ Checked 2026-10-05

Artificial Analysis · Intelligence Index methodology v4.3.2 ↗ Checked 2026-10-05

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