Claude Opus 4.8
No shutdown before this date. Claude Opus 4.8 stays on the Claude API until at least May 28, 2027.
≥ 7 mo- Earliest retirement
- ≥ 226 daysMay 28, 2027 · Claude API
- Arena Text
- 1,481#16 of 128 · Arena
- GPQA Diamond
- 91.0%#25 of 108 · Epoch AI
- List price · $ per 1M
- $5.00 in $25.00 outClaude API · cached input $0.50
- Context window
- 1MMax output 128K tokens
Dates on every platform
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| Claude APIAnthropic: Model deprecations (opens in a new tab) · checked Oct 14, 2026 | claude-opus-4-8Legacy | – | ≥ 7 moNot sooner than | – |
| Azure AI FoundryMicrosoft: Model retirement schedule - Microsoft Foundry (opens in a new tab) · checked Oct 14, 2026 | claude-opus-4-8:1Active | – | 11 mo | – |
| Azure AI FoundryMicrosoft: Model retirement schedule - Microsoft Foundry (opens in a new tab) · checked Oct 14, 2026 | claude-opus-4-8:2Active | – | 11 mo | – |
| Amazon BedrockAmazon Web Services: Amazon Bedrock ListFoundationModels, us-east-1 (opens in a new tab) · checked Oct 14, 2026 | anthropic.claude-opus-4-8Active · also au.anthropic.claude-opus-4-8, eu.anthropic.claude-opus-4-8, global.anthropic.claude-opus-4-8, jp.anthropic.claude-opus-4-8, us-gov.anthropic.claude-opus-4-8, us.anthropic.claude-opus-4-8 | – | ≥ 7 moNot sooner than | – |
| Google Vertex AIGoogle Cloud: Claude Opus 4.8 on Google Cloud (opens in a new tab) · checked Oct 14, 2026 | claude-opus-4-8Active | – | ≥ 7 moNot sooner than | – |
Anthropic lists it as a legacy model and recommends Claude Opus 5.5.
Version 1 runs on Anthropic infrastructure.
Version 2 runs on Azure infrastructure.
In us-east-1, requests go through a cross-Region inference profile (listed in aliases).
What breaks when you move off Claude Opus 4.8
No breaking changes are recorded for the move to Claude Opus 5.5. Run your own cases on it before the date.
Intelligence
| Benchmark | Publisher | Score | Rank | Published |
|---|---|---|---|---|
| Arena Text | Arena | 1,481 ± 2 | #16 of 128 | Oct 8, 2026 |
| GPQA Diamond | Epoch AI | 91.0% ± 1.9% | #25 of 108 | Jun 7, 2026 |
| Arena WebDev | Arena | 1,556 ± 3 | #23 of 69 | Oct 8, 2026 |
| Arena Agent | Arena | 0 ± 0 | #10 of 35 | Oct 12, 2026 |
| FrontierMath Tier 4 | Epoch AI | 56.1% ± 7.8% | #15 of 58 | Jun 10, 2026 |
| FrontierMath Tiers 1-3 | Epoch AI | 80.0% ± 2.4% | #15 of 71 | Jun 10, 2026 |
| OTIS Mock AIME 2024-2025 | Epoch AI | 98.3% ± 1.4% | #17 of 105 | Jun 7, 2026 |
| SimpleQA Verified | Epoch AI | 53.0% ± 1.6% | #19 of 68 | Aug 27, 2026 |
Arena (arena.ai), https://arena.ai/leaderboard
Epoch AI, ‘Capabilities & benchmarking’. Published online at epoch.ai. Retrieved from ‘https://epoch.ai/benchmarks’ [online resource].
List prices
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
Claude APIclaude-opus-4-8 | $5.00 | $0.50 | $25.00 | May 28, 2026Current | Anthropic: Pricing (opens in a new tab) |
Amazon Bedrockanthropic.claude-opus-4-8 | $5.50 | $0.55 | $27.50 | Sep 1, 2026Current · Standard tier, in-Region or geographic cross-Region inference, which Bedrock prices 10% above global cross-Region inference. | Amazon Web Services: AWS Price List API: AmazonBedrockFoundationModels, us-east-1 (opens in a new tab) |
Google Vertex AIclaude-opus-4-8 | $5.00 | $0.50 | $25.00 | May 28, 2026Current · Global endpoint price; regional and multi-region endpoints cost more. | Google Cloud: Agent Platform pricing (opens in a new tab) |
Change history
ShutdownClaude Opus 4.1 shut down on the Claude APIClaude API
Requests to claude-opus-4-1-20250805 fail from the retirement date. Anthropic named Claude Opus 4.8 as the replacement. The model stays on Amazon Bedrock and Google Cloud on their own schedules.
- Platform
- Claude API
- Model
- Claude Opus 4.1
- Replacement
- Claude Opus 4.8
- Announced
Source: Anthropic, Model deprecations (opens in a new tab); Anthropic, Pricing (opens in a new tab)