Atlas / Anthropic / Claude Opus 4.1

Claude Opus 4.1

High-capability Claude model known for strong coding performance and deep analytical reasoning.

Active Reasoning Tools Vision

Current pricing

Input

$15.00

Output

$75.00

Cached input

$1.50

per 1M tokens Source ↗

Specifications

Context window

200K tokens

Max output

32K tokens

Knowledge cutoff

Feb 2025

Capabilities

✓ Function calling / Tools

✓ Image understanding

✓ Extended thinking / Reasoning

✗ Audio input/output

TierUnitInputCached inputOutputEffectiveSource

Standard Per 1M tokens $15.00 $1.50 $75.00 March 12, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 March 11, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 March 10, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 March 9, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 March 8, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 March 7, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 March 6, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 March 1, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 Feb. 22, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 Feb. 15, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 Feb. 8, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 Feb. 1, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 Jan. 25, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 Jan. 11, 2026 Source

Standard Per 1M tokens $15.00 $1.50 $75.00 Jan. 10, 2026 Source