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Anthropic · llm model

Claude Opus 4.6

Release Ruler for Claude Opus 4.6: released Feb 5, 2026, $5 per 1M input tokens, proprietary. Each thin stem on the ruler is another model we track.

Claude Opus 4.6 is an Anthropic language model released Feb 5, 2026; Anthropic's newest language model in our dataset is Claude Haiku 5.5. Proprietary, API access only. Anthropic's Claude Opus 4.6, launched Feb 5, 2026 at $5 / $25 per million tokens, the predecessor of Claude Opus 4.7. Verified against vendor sources on Oct 26, 2026.

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  • ReleasedFeb 5, 2026
  • LicenceProprietaryProprietary (API)

Modalities not verified

Key facts

Claude Opus 4.6: key facts with sources
FactValueSource
VendorAnthropicn/a
ReleasedFeb 5, 2026 Date of the launch entry in the Claude Platform release notes (API availability).source
Statusgenerally availablen/a
API idclaude-opus-4-6source
LicenceProprietary (API)source
Pricing$5 in / $25 out per 1M tokenssource

Where Claude Opus 4.6 sits in our data

How Claude Opus 4.6 differs from Claude Sonnet 4.6

Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.

  • We have a recorded price for Claude Opus 4.6 but none for Claude Sonnet 4.6.
  • Claude Opus 4.6 came out 12 days before Claude Sonnet 4.6.
  • Facts for the other model: Claude Sonnet 4.6.

What we tested

Nothing yet. We have not run Claude Opus 4.6 ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.

Not verified, left out

We could not confirm these on a vendor page, so we do not state them.

  • Price is stated in the Claude Opus 4.7 release note ("the same $5 / $25 USD per MTok pricing as Opus 4.6").
  • Context window and max output were not captured for this model.

Sources

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