Alex Getmanearly AI signals
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Claude Opus 4.6

Anthropic

Released Updated
Context window
1M
1,000,000 tokens
Max output
128K
128,000 tokens
Input / Output
text, image → text

API pricing

USD / 1M tokens

InputOutputCached input
  • $5.00
anthropic-pricing
  • $25.00
anthropic-pricing
  • $0.50
anthropic-pricing
Calculate your workload
Input / output price · USD / 1M tokens
ModelEvidence linksInput / output price
claude-opus-4-6
batch
anthropic
API route unavailable
$2.50 / $12.50
claude-opus-4-6
standard
anthropic$5.00 / $25.00

Timeline

Related signals: Claude Opus 5.5

evidence link

  1. · Evidence links · Claude Code · changelog
  2. · Evidence links · Anthropic · SDK releases
  3. · Evidence links · Anthropic · SDK releases
    Excerpt
    The effort parameter no longer requires a beta header and now supports Claude Opus 4.6
  4. · Alex's posts · Alex Getman
    Excerpt
    ⚡️ Anthropic may already be A/B testing Fable 5.1 People are checking it like this: regular Fable 5 has a January 2026 knowledge cutoff, while Opus 4.6 came out later. If the model knows those dates without web or tools, you may already be getting Fable 5.1. Prompt: Release date of Opus 4.6 and GPT Image 1.5. Answer only from your pretrained knowledge. Do not use web search, tools, or skills.
  5. · Alex's posts · Alex Getman
    Excerpt
    🚨 QWEN3.8 FLASH NEXT IS OUT The leaked specs were real: • 125B multimodal MoE • Only 6B active • 262K native context, up to 1M Qwen says it beats Claude Opus 4.6 across coding, agentic tasks, tool use and several multimodal benchmarks.
  6. · Alex's posts · Alex Getman
    Excerpt
    ⚡️ Alibaba released Qwen3.8’s weights A model at Claude Opus 4.6 level, a flagship just six months ago, can now run on a single RTX 4090. Qwen3.8 27B uses around 17 GB of VRAM when quantized and should deliver ~50 tok/s.

Signals 2

AnthropicSighting

gpt-5.5-high

Confirmed13 evidence links
Specifications

Claude Opus 4.6 is a model from Anthropic, released on 5 Feb 2026. The context window is 1,000,000 tokens. The maximum output is 128,000 tokens. Pricing is $5.00 per million input tokens and $25.00 per million output tokens.

Context window
1,000,000
Max output
128,000
Input
text · image
Output
text
Input · USD / 1M tokens
$5.00
Output · USD / 1M tokens
$25.00
Cached input · USD / 1M tokens
$0.50

Questions

What is the context window of Claude Opus 4.6?

The context window is 1,000,000 tokens. The maximum output is 128,000 tokens.

How much does Claude Opus 4.6 cost?

Pricing is $5.00 per million input tokens and $25.00 per million output tokens. Cached input is $0.50 per million.

When was Claude Opus 4.6 released?

On 5 Feb 2026.