Claude Opus 4.6 (Fast) — Anthropic | Modeldex

Claude Opus 4.6 (Fast)

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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

VisionLong context

API release

Apr 7, 2026(this month)

Not enough benchmark coverage yet for an Intelligence Index — needs at least 3 results across 2 categories.

Overview

History

Claude Opus 4.6 (Fast) became available via the Anthropic API on 2026-04-07.

Training & availability

Anthropic has not released the underlying model weights — access is via their hosted API only.

Capabilities

Context window: 1.0M tokens.
Input modalities: text, image.

Recommended for: vision, long-context.

Limitations

At $150.00/1M output tokens, this is in the premium tier — verify cost-per-value for high-volume workloads.

Pricing

Input: $30.0000 per 1M tokens
Output: $150.0000 per 1M tokens

Use the cost calculator above to estimate monthly spend for your workload.

Quick start

Minimal example using the anthropic API. Copy, paste, replace the key.

from anthropic import Anthropic

client = Anthropic(api_key="sk-ant-...")
resp = client.messages.create(
    model="claude-opus-4-6-fast",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Explain quantum computing in one sentence."}],
)
print(resp.content[0].text)

Cost calculator

Estimate your monthly bill. Presets are typical workload sizes.

Input tokens / month5.0M

@ $30/1M

Output tokens / month2.0M

@ $150/1M

Input cost

$150

5.0M × $30/1M

Output cost

$300

2.0M × $150/1M

Total / month

$450

$5400 / year

Integrations & tooling support

Tool calling: Not supported
Structured outputs: Not supported

Price vs quality

Not enough data

This model has no benchmark scores recorded yet.

Community ratings

No ratings yet. Be the first to rate Claude Opus 4.6 (Fast).