Claude Opus 4.8
API ID claude-opus-4-8
claude-opus-4-8 is an Anthropic model, released May 2026. It has a 1,000,000-token context window and up to 128,000 output tokens. It takes image input and supports reasoning. Standard price: $5.00 input and $25.00 output per 1M tokens.
- Status
- Active
- Released
- May 2026
- Shutdown
- not before May 28, 2027
- Replacement
- —
claude-opus-4-8 is active. Anthropic says it won't be retired before May 28, 2027.
Benchmarks
Scores as each source published themComparing with Claude Opus 4.7, the previous model in this line. A score is compared only with the same benchmark from the same source, at the same setting where both have it. Full comparison: prices, limits, features
Arena
| Arena | Claude Opus 4.8 | Claude Opus 4.7 | Change | Rank | Date | Source |
|---|---|---|---|---|---|---|
TextOther settings
By category
| 1482 ±4 | 1501 ±4 | −19 | 25 of 415 64,112 votes | Oct 13, 2026 | source |
Text: CodingOther settings
| 1533 ±6 | 1550 ±6 | −17 | 17 of 410 17,434 votes | Oct 13, 2026 | source |
WebDevOther settings
| 1556 ±6 | 1558 ±6 | −2 within range | 38 of 142 18,540 votes | Oct 13, 2026 | source |
VisionOther settings
| 1286 ±6 | 1298 ±7 | −12 within range | 21 of 165 18,341 votes | Oct 9, 2026 | source |
| Search | 1195 ±6 | 1210 ±5 | −15 | 22 of 42 106,304 votes | Oct 13, 2026 | source |
DocumentOther settings
| 1486 ±7 | 1493 ±7 | −7 within range | 9 of 44 11,551 votes | Sep 13, 2026 | source |
| Agent | 0.071 ±0.015 | not rated | 11 of 54 40,277 sessions | Oct 14, 2026 | source |
Rated as claude-opus-4-8-high (high effort); Claude Opus 4.7 as claude-opus-4-7-high (high effort). Text, WebDev, Vision, Search and Document ratings come from people voting between two anonymous answers; Text, Vision, Search and Document are style-controlled, as on arena.ai. Agent is Arena's separate score for real agent sessions, on its own scale. Data: Arena (arena.ai), CC BY 4.0.
Epoch AI
| Benchmark | Claude Opus 4.8 | Claude Opus 4.7 | Change | Setting | Run | Source |
|---|---|---|---|---|---|---|
| FrontierMath Tier 4 | 56.1% | 31.7% | +24.4 pts | max effort | Jun 10, 2026 | source |
| FrontierMath Tiers 1-3 | 80.0% | 70.2% | +9.8 pts | max effort | Jun 10, 2026 | source |
GPQA DiamondOther settings
| 91.0% | 86.4% | +4.6 pts | max effort | Jun 7, 2026 | source |
OTIS Mock AIME 2024-2025Other settings
| 98.3% | 86.7% | +11.6 pts | max effort | Jun 7, 2026 | source |
| SimpleQA Verified | 53.0% | 51.7% | +1.3 pts | max effort (vs xhigh effort) | Aug 27, 2026 | source |
Run independently by Epoch AI. Data: Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.
On cloud platforms
All platform dates| Platform | Platform ID | State | Shutdown | Time left | Replacement | Source |
|---|---|---|---|---|---|---|
| Amazon Bedrock | anthropic.claude-opus-4-8 | Active | not before May 28, 2027 | — | source | |
| Microsoft Foundryversion 1 | claude-opus-4-8 | Active | Sep 1, 2027 | 321 days | — | source |
| Microsoft Foundryversion 2 | claude-opus-4-8 | Active | Sep 1, 2027 | 321 days | — | source |
Read daily from each platform's own pages. The shutdown date and countdown on this page use Anthropic's own date. Time left counts to 00:00 UTC on the shutdown date, which is the evening before in ET.
Features
Compare models| Feature | Value | Since | Source |
|---|---|---|---|
| Prompt cachingA prompt prefix you send again and again (system prompt, documents, tools) is cached, so later requests cost less and start faster. | Supported | in place when tracking began (October 6, 2026) | source |
| Batch APISend many requests as one job that runs in the background, usually finished within 24 hours, at a lower price than live requests. | Supported | in place when tracking began (October 6, 2026) | source |
| Image inputImages such as screenshots, photos and charts can go in the prompt for the model to read. | Supported | in place when tracking began (October 6, 2026) | source |
| Reasoning / thinkingThe model can work through a problem step by step before it answers: usually better answers to hard questions, at the cost of more tokens and time. | Supported (thinking: adaptive; default effort: high) | in place when tracking began (October 6, 2026) | source |
| Context windowThe most the model can work with in one request, in tokens: your prompt, conversation history and files. A token is about three-quarters of an English word. | 1,000,000 tokens | in place when tracking began (October 6, 2026) | source |
| Max output tokensThe longest reply the model can write in one response, in tokens. A token is about three-quarters of an English word. | 128,000 tokens | in place when tracking began (October 6, 2026) | source |
Not published by Anthropic: Structured outputs, Function calling, PDF input, Fine-tuning, Built-in web search, temperature parameter, top_p parameter, logprobs.
Price history
USD per 1M tokens, standard tierWe started recording this model's prices on Oct 1, 2026. The history grows with each daily check.
Show as a table
| From | Type | Price |
|---|---|---|
| Oct 1, 2026 | Input | $5.00 |
| Oct 1, 2026 | Output | $25.00 |
Prices
USD per 1M tokens, every type and band, by tier| Type | Price $/1M | In effect |
|---|---|---|
| Standard | ||
| input | $5.00 | |
| cached input | $0.50 | |
| cache write (5 min) | $6.25 | |
| cache write (1 hour) | $10.00 | |
| output | $25.00 | |
| Batch | ||
| input | $2.50 | |
| output | $12.50 | |
| Fast | ||
| input | $10.00 | |
| output | $50.00 | |
Changelog
Changes we detected on Anthropic's pagesNo changes recorded yet.
Email alerts
Get an email if claude-opus-4-8 changes
We'll email you the same morning we spot a deprecation notice, a new or moved shutdown date, a price change, or the model leaving Anthropic's model list.
No password: one email to confirm, and you can unsubscribe any time. Privacy
Last checked · Sources: Anthropic models, Anthropic deprecations, Anthropic pricing, Anthropic model pages