Anthropic

Pricing /1M tok $5.00 / $25.00 • API

Claude Opus 4.6

active frontier

Anthropic's flagship model for complex agents and coding. Extended + adaptive thinking, 1M context, 128K output.

Context 1M

Max output 128K

Released Mar 24, 2026

API: claude-opus-4-6 Vision: Yes Functions: Yes Cutoff: 2025-08

← claude-opus-4-5

Claude Sonnet 4.6

active balanced

Fast balanced model with extended + adaptive thinking. 1M context, 64K output.

Context 1M

API: claude-sonnet-4-6 Vision: Yes Functions: Yes Cutoff: 2026-01

Released Mar 24, 2026

← claude-sonnet-4-5

Claude Haiku 4.5

active fast

Fastest Claude model with near-frontier intelligence. Extended thinking, 200K context, 64K output.

Pricing /1M tok $1.00 / $5.00 • API

Released Oct 1, 2025

API: claude-haiku-4-5-20251001 Vision: Yes Functions: Yes Cutoff: 2025-02

← claude-3-haiku

Claude Opus 4.5

Previous-generation flagship. Extended thinking, 200K context.

Pricing /1M tok $5.00 / $25.00 • API

Released Nov 1, 2025

API: claude-opus-4-5-20251101 Vision: Yes Functions: Yes Cutoff: 2025-05

← claude-opus-4-1 → claude-opus-4-6

Claude Sonnet 4.5

Previous-generation balanced model with extended thinking. 200K context.

API: claude-sonnet-4-5-20250929 Vision: Yes Functions: Yes Cutoff: 2025-01

Released Sep 29, 2025

← claude-sonnet-4-0 → claude-sonnet-4-6

Claude Opus 4.1

Premium reasoning model with extended thinking. 200K context, 32K output.

Pricing /1M tok $15.00 / $75.00 • API

Max output 32K

Released Aug 5, 2025

API: claude-opus-4-1-20250805 Vision: Yes Functions: Yes Cutoff: 2025-01

← claude-opus-4-0 → claude-opus-4-5

Claude Opus 4

First-generation Claude 4 flagship. Extended thinking, 200K context, 32K output.

Pricing /1M tok $15.00 / $75.00 • API

Max output 32K

Released May 14, 2025

API: claude-opus-4-20250514 Vision: Yes Functions: Yes Cutoff: 2025-01

← claude-3-opus → claude-opus-4-1

Claude Sonnet 4

First-generation Claude 4 balanced model. Extended thinking, 200K context.

API: claude-sonnet-4-20250514 Vision: Yes Functions: Yes Cutoff: 2025-01

Released May 14, 2025

← claude-3-5-sonnet → claude-sonnet-4-5

Claude 3.5 Sonnet

Claude 3.5 generation balanced model. 200K context, 8K output. Still callable.

Max output 8K

API: claude-3-5-sonnet-20241022 Vision: Yes Functions: Yes Cutoff: 2024-04

Released Oct 22, 2024

← claude-3-sonnet → claude-sonnet-4-0

Claude 3 Opus

Original Claude 3 flagship model. 200K context. Still callable but superseded.

Pricing /1M tok $15.00 / $75.00 • API

Max output 4K

Released Feb 29, 2024

API: claude-3-opus-20240229 Vision: Yes Functions: Yes Cutoff: 2023-08

→ claude-opus-4-0

Claude 3 Sonnet

Original Claude 3 balanced model. 200K context.

Max output 4K

API: claude-3-sonnet-20240229 Vision: Yes Functions: Yes Cutoff: 2023-08

Released Feb 29, 2024

→ claude-3-5-sonnet

Claude 3 Haiku

deprecated fast

Deprecated fast model. Will be retired April 19, 2026. Migrate to Claude Haiku 4.5.

Pricing /1M tok $0.25 / $1.25 • API

Max output 4K

Released Mar 7, 2024

API: claude-3-haiku-20240307 Vision: Yes Functions: Yes Cutoff: 2023-08