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Author's Description
Fast-mode variant of [Opus 4.6](/anthropic/claude-opus-4.6) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Key Specifications
Context
1M
Released
Apr 07, 2026
Supported Parameters
This model supports the following parameters:
Tools
Structured Outputs
Top P
Response Format
Temperature
Stop
Reasoning
Include Reasoning
Tool Choice
Max Tokens
Features
This model supports the following features:
Structured Outputs
Response Format
Tools
Reasoning
Model Pricing
Current Pricing
| Feature | Price (per 1M tokens) |
|---|---|
| Prompt | $30 |
| Completion | $150 |
| Input Cache Read | $3 |
| Input Cache Write | $37.5 |
| Web Search | $10000 |
Price History
Available Endpoints
| Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
|---|---|---|---|---|
|
Anthropic
|
Anthropic | anthropic/claude-4.6-opus-fast-20260407 | 1M | $30 / 1M tokens | $150 / 1M tokens |
No benchmark execution results are available for this model yet.
Other Models by anthropic
|
|
Released | Params | Context |
|
Speed | Ability | Cost |
|---|---|---|---|---|---|---|---|
| Anthropic: Claude Sonnet 4.6 | Feb 17, 2026 | — | 1M |
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|
★★★★ | ★★★★★ | $$$$$ |
| Anthropic: Claude Opus 4.6 | Feb 04, 2026 | — | 1M |
Text input
Image input
Text output
|
★★★ | ★★★★★ | +$$$$$ |
| Anthropic: Claude Opus 4.5 | Nov 24, 2025 | — | 200K |
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Text input
Image input
Text output
|
★★★ | ★★★★★ | +$$$$$ |
| Anthropic: Claude Haiku 4.5 | Oct 15, 2025 | — | 200K |
Text input
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Text output
|
★★★★ | ★★★★ | $$$$ |
| Anthropic: Claude Haiku 4.5 Unavailable | Oct 14, 2025 | — | 200K |
Text input
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|
— | — | $$$$$ |
| Anthropic: Claude Sonnet 4.5 | Sep 29, 2025 | — | 1M |
File input
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Image input
Text output
|
★★★ | ★★★★★ | $$$$$ |
| Anthropic: Claude Opus 4.1 | Aug 05, 2025 | — | 200K |
File input
Text input
Image input
Text output
|
★★★ | ★★★★★ | +$$$$$ |
| Anthropic: Claude Opus 4 | May 22, 2025 | — | 200K |
File input
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Text output
|
★★ | ★★★★★ | +$$$$$ |
| Anthropic: Claude Sonnet 4 | May 22, 2025 | — | 1M |
File input
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Text output
|
★★★ | ★★★★★ | $$$$$ |
| Anthropic: Claude 3.7 Sonnet | Feb 24, 2025 | — | 200K |
File input
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Text output
|
★★★ | ★★★★★ | $$$$$ |
| Anthropic: Claude 3.5 Haiku | Nov 03, 2024 | — | 200K |
Text input
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Text output
|
★★★★ | ★★★ | $$$$ |
| Anthropic: Claude 3.5 Haiku (2024-10-22) Unavailable | Nov 03, 2024 | — | 200K |
File input
Text input
Image input
Text output
|
★★★★ | ★★★ | $$$$ |
| Anthropic: Claude 3.5 Sonnet Unavailable | Oct 21, 2024 | ~400B | 200K |
File input
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Text output
|
★★★ | ★★★★ | +$$$$$ |
| Anthropic: Claude 3.5 Sonnet (2024-06-20) Unavailable | Jun 19, 2024 | ~400B | 200K |
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|
★★★★ | ★★★★ | $$$$$ |
| Anthropic: Claude 3 Haiku | Mar 12, 2024 | ~20B | 200K |
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|
★★★★★ | ★★ | $$$ |
| Anthropic: Claude 3 Sonnet Unavailable | Mar 04, 2024 | ~200B | 200K |
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|
★★★★ | ★★★★ | $$$$$ |
| Anthropic: Claude 3 Opus Unavailable | Mar 04, 2024 | ~2T | 200K |
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|
★★★ | ★★★ | +$$$$$ |
| Anthropic: Claude v2 Unavailable | Nov 21, 2023 | 137B | 200K |
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|
★★ | ★★★★ | +$$$$$ |
| Anthropic: Claude v2.1 Unavailable | Nov 21, 2023 | 137B | 200K |
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Text output
|
★★ | ★★★★ | +$$$$$ |
| Anthropic: Claude v2.0 Unavailable | Jul 27, 2023 | 137B | 100K |
Text input
Text output
|
★★★ | ★★★★ | +$$$$$ |