Updated July 6, 2026
Claude Sonnet 5 has shipped. Anthropic released it on June 30, 2026; this page has been updated to reflect the released model rather than the pre-launch outlook. As of July 6, 2026, Anthropic’s lineup is Claude Fable 5 (top tier above Opus; $10 in / $50 out per MTok; Mythos 5 is the limited-availability sibling), Claude Opus 4.8 ($5/$25), Claude Sonnet 5 (released June 30, 2026; now the default for Free and Pro; introductory $2/$10 per MTok through Aug 31, 2026, then $3/$15), and Claude Haiku 4.5 ($1/$5). Opus 4.7 and Sonnet 4.6 are now legacy. Full details: the Claude Fable 5 Complete Guide.
Last refreshed: May 15, 2026
Model Accuracy Note — Updated May 2026
Current lineup (updated July 6, 2026): Claude Fable 5 is the top tier above Opus, with Claude Opus 4.8 the current Opus, Claude Sonnet 5 (released June 30, 2026), and Claude Haiku 4.5. Opus 4.7 is now a legacy model. Full lineup: Claude Fable 5 guide. Claude Opus 4.7 was the flagship when this article was written (April 16, 2026); Opus 4.8 and the Fable 5 top tier have since shipped. Where this article references Opus 4.6 or earlier models, those references are historical. See current model tracker →. See current model tracker →
Anthropic released Claude Sonnet 5 on June 30, 2026. This page originally tracked the run-up to that launch; it now covers the released model, how it fits the current lineup, and how to stay current as models evolve.
claude-sonnet-5) was released June 30, 2026 and is now Anthropic’s default Sonnet for Free and Pro plans, replacing Sonnet 4.6. Introductory API pricing is $2 input / $10 output per MTok through August 31, 2026, then $3/$15.
The Current Claude Model Lineup
| Model | API String | Status |
|---|---|---|
| Claude Opus 4.7 | claude-opus-4-7 | Legacy — superseded by Opus 4.8 |
| Claude Sonnet 4.6 | claude-sonnet-4-6 | ✅ Current production default |
| Claude Haiku 4.5 | claude-haiku-4-5-20251001 | ✅ Current fast/cheap tier |
| Claude Sonnet 5 | claude-sonnet-5 | ✅ Released June 30, 2026 |
How Anthropic Releases Models
Anthropic follows a consistent pattern: new models launch across the Haiku 4.5, Sonnet 4.6, and Opus 4.7 tiers, often in sequence rather than simultaneously. Sonnet tends to be the first tier developers get meaningful access to at each generation — it’s the workhorse tier, and Anthropic has historically prioritized making it available broadly.
Major model generations arrive roughly every several months. Point releases (like 4.5 → 4.6) happen more frequently and often bring targeted capability improvements rather than fundamental architecture changes. A “Sonnet 5” designation would signal a new major generation rather than an incremental update.
What to Expect From Claude Sonnet 5
Based on the pattern across Claude generations, each new major Sonnet release has delivered: improved reasoning and instruction-following, better code generation, expanded context handling, and lower cost relative to the previous generation’s Opus tier. The trajectory has consistently moved toward making the mid-tier model do what only the top-tier could do previously.
Specific feature claims about an unannounced model would be speculation. What’s documented is the direction: Anthropic is investing heavily in extended thinking, agentic capabilities, and multimodal performance. Those priorities will almost certainly shape what Sonnet 5 looks like when it ships.
How to Stay Current on Claude Model Releases
The most reliable sources for Claude model announcements:
- Anthropic’s blog (anthropic.com/news) — official launch announcements
- Anthropic’s model documentation (docs.anthropic.com/en/docs/about-claude/models) — current API strings and deprecation notices
- Anthropic’s changelog — incremental updates and point releases
- This page — updated as new Claude model information becomes available
Should You Wait for Sonnet 5?
For most use cases, no. Claude Sonnet 4.6 is a capable production model. If you’re building something today, build on the current model and upgrade when the new one releases — that’s the standard pattern for any production API dependency. Waiting for an unannounced model before starting development rarely makes sense.
If you’re doing initial architecture decisions and want to understand where the platform is heading, Anthropic’s research publications and roadmap hints from their public communications are worth tracking. But for day-to-day work, the current Sonnet is the right tool.
For the current model lineup with full specs, see Claude Models Explained: Haiku vs Sonnet vs Opus. For API model strings and how to use them, see Claude API Model Strings — Complete Reference.
Frequently Asked Questions
Has Anthropic announced Claude Sonnet 5?
Yes. Anthropic released Claude Sonnet 5 on June 30, 2026. It is now the default Sonnet for Free and Pro plans, replacing Sonnet 4.6, and is available via the Claude API, Claude Code, Amazon Bedrock, Google Cloud Vertex AI, and Microsoft Foundry.
What is the current version of Claude Sonnet 4.6?
The current Claude Sonnet 4.6 version is Sonnet 4.6, with the API model string claude-sonnet-4-6. It’s the production default for most API workloads.
How often does Anthropic release new Claude models?
Anthropic releases major model generations every several months, with point releases more frequently. The pace has been accelerating — each year has brought multiple significant model updates across the Haiku 4.5, Sonnet 4.6, and Opus 4.7 tiers.









