Home / Latest answers / Anthropic
What is the latest Claude model?
The newest Anthropic model is Claude Haiku 5.5, first listed on OpenRouter on Oct 7, 2026.
Top ranked on LMArena Text: Claude Opus 5.5 (High) at #2.
Latest from Anthropic: Open call for guest investigators in the life sciences (Oct 22, 2026).
Sources: OpenRouter, LMArena (CC BY 4.0), anthropic.com
Recent Anthropic models
| Model | Listed | Context | $ in / out |
|---|---|---|---|
| Claude Haiku 5.5 anthropic/claude-haiku-5.5 | Oct 7 | 1M | $0.100 / $0.50 |
| Claude Sonnet 5.5 anthropic/claude-sonnet-5.5 | Sep 28 | 1M | $2.00 / $10 |
| Claude Opus 5.5 anthropic/claude-opus-5.5 | Sep 22 | 1M | $4.00 / $20 |
| Claude Fable 5.1 anthropic/claude-fable-5.1 | Sep 1 | 1M | $10 / $50 |
| Claude Opus 5 anthropic/claude-opus-5 | Jul 24 | 1M | $5.00 / $25 |
| Claude Sonnet 5 anthropic/claude-sonnet-5 | Jun 30 | 1M | $2.00 / $10 |
| Claude Fable 5 anthropic/claude-fable-5 | Jun 9 | 1M | $10 / $50 |
| Claude Opus 4.8 anthropic/claude-opus-4.8 | May 27 | 1M | $5.00 / $25 |
Price per 1M tokens on OpenRouter.
Latest from Anthropic
- ANTOpen call for guest investigators in the life sciencesToday, we’re inviting members of the life sciences community to apply to work with us on special projects.anthropic.com
- ANTDonating Agent Skills to the Agentic AI Foundationanthropic.com
- ANTPhysicist Christopher Stubbs joins Anthropic's Long-Term Benefit TrustDr. Christopher Stubbs, an experimental physicist and former Dean of Science at Harvard University, has joined Anthropic’s Long-Term Benefit Trust.anthropic.com
- ANTInvesting in the public benefitWe’re committing a portion of Anthropic’s shares to the Anthropic Public Benefit Fund, a new entity with a structure that increases the stake as the company grows.anthropic.com
- ANTAnthropic update on independent evaluatorsAnthropic announces updates to embedding independent evaluatorsanthropic.com
- ANTPartnering with Accenture on embedded evaluationWe’re partnering with Accenture on independent evaluation of frontier AI, part of our recent commitment to embed evaluators at Anthropic.anthropic.com
- ANTDeveloping Enterprise Frontier Safeguards with our customersanthropic.com
Leaderboard standing
| Arena | Best model | Rank |
|---|---|---|
| Text | Claude Opus 5.5 (High) | #2 |
| WebDev | Claude Opus 5.5 (Max) | #1 |
| Vision | Claude Fable 5 (High) | #1 |
All leaderboards. Source: LMArena, CC BY 4.0.
Questions
What is the latest Claude model?
As of Oct 23, 2026, the newest Anthropic model is Claude Haiku 5.5, first listed on OpenRouter on Oct 7, 2026.
Which Anthropic model ranks highest on LMArena?
The highest ranked Anthropic model on the LMArena Text leaderboard is Claude Opus 5.5 (High), at #2 with a score of 1516 (board published Oct 22, 2026).
What did Anthropic announce most recently?
Anthropic's most recent announcement is "Open call for guest investigators in the life sciences" from Oct 22, 2026.
How often is this answer updated?
Every two hours. The model listing comes from the OpenRouter models API, rankings from the LMArena leaderboard dataset, and announcements from anthropic.com.