Atlas / Anthropic / Claude Opus 4.5

Claude Opus 4.5

Previous flagship Claude model. Excellent at complex analysis, creative writing, and nuanced reasoning.

Active Reasoning Tools Vision

Current pricing

Input

$5.00

Output

$25.00

Cached input

$0.50

per 1M tokens Source ↗

Specifications

Context window

200K tokens

Max output

32K tokens

Knowledge cutoff

Mar 2025

Capabilities

✓ Function calling / Tools

✓ Image understanding

✓ Extended thinking / Reasoning

✗ Audio input/output

TierUnitInputCached inputOutputEffectiveSource

Standard Per 1M tokens $5.00 $0.50 $25.00 March 12, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 March 11, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 March 10, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 March 9, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 March 8, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 March 7, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 March 6, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 March 1, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 Feb. 22, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 Feb. 15, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 Feb. 8, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 Feb. 1, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 Jan. 25, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 Jan. 11, 2026 Source

Standard Per 1M tokens $5.00 $0.50 $25.00 Jan. 10, 2026 Source