Anthropic model product
Claude Opus 4.8
7 and its most capable general-access model at release, with improvements across software engineering, agentic tool use, reasoning, computer use, and knowledge-work benchmarks while shipping at the same price ($5/$25 per million.
Updated Aug 12, 2026. Default version: Claude Opus 4.8
LLMBoard score87.9Claude Opus 4.8
Coverage100%26 benchmark families
Context window1MTokens
Official input price$5Anthropic API
Claude Opus 4.8 Specifications
Technical details for the model's default version.
- Version
- Claude Opus 4.8
- Released
- May 28, 2026
- Knowledge cutoff
- Jan 1, 2026
- Parameters
- N/A
- Context window
- 1M
- Max output
- 128K
- Inputs
- image, pdf, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Claude Opus 4.8 Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Claude Opus 4.8 Benchmark Results
Benchmark scores for Claude Opus 4.8.
| Include | 0.9 | 1 | 31 | 100.0% | C | |
| ScreenSpot Pro | 0.9 | 1 | 25 | 100.0% | C | |
| DeepSearchQA | 0.9 | 2 | 9 | 87.5% | C | |
| Graphwalks parents >128k | 0.8 | 2 | 7 | 83.3% | C | |
| SWE-bench Multilingual | 0.8 | 2 | 34 | 97.0% | C | |
| SWE-Bench Multimodal | 0.4 | 2 | 3 | 50.0% | C | |
| FrontierSWE | 0.8 | 3 | 15 | 85.7% | B | |
| OfficeQA Pro | 0.7 | 3 | 7 | 66.7% | C | |
| OSWorld-Verified | 0.8 | 3 | 23 | 90.9% | C | |
| SWE-Bench Pro | 0.7 | 3 | 45 | 95.5% | C | |
| SWE-Bench Verified | 0.9 | 3 | 105 | 98.1% | C | |
| CharXiv-R | 0.9 | 4 | 48 | 93.6% | C | |
| CyberGym | 0.8 | 4 | 11 | 70.0% | C | |
| Finance Agent v2 | 0.5 | 4 | 26 | 88.0% | B | |
| FrontierCode 1.1 | 0.5 | 4 | 15 | 78.6% | B | |
| Toolathlon | 0.6 | 4 | 31 | 90.0% | C | |
| GPQA | 0.9 | 5 | 234 | 98.3% | C | |
| Graphwalks BFS >128k | 0.7 | 5 | 11 | 60.0% | C | |
| MCP Atlas | 0.8 | 5 | 31 | 86.7% | C | |
| HealthBench Professional | 0.6 | 6 | 9 | 37.5% | C | |
| Humanity's Last Exam | 0.6 | 6 | 93 | 94.6% | C | |
| LiveBench | 0.8 | 6 | 38 | 86.5% | B | |
| Finance Agent | 0.5 | 7 | 8 | 14.3% | C | |
| Terminal-Bench 2.0 | 0.7 | 7 | 49 | 87.5% | C | |
| DeepSWE 1.1 | 0.6 | 9 | 20 | 57.9% | B | |
| BrowseComp | 0.8 | 13 | 58 | 79.0% | C |
Claude Opus 4.8 Arena Results
Preference and agent-evaluation results for the default version.
| agent praise complaint | overall | 3 | 0.2 | N/A | 7.2K | |
| agent | overall | 6 | 0.1 | N/A | 1.6M | |
| agent steerability | overall | 6 | 0.1 | N/A | 26.2K | |
| agent task outcome explicit | overall | 7 | 0.1 | N/A | 24.7K | |
| document style control | overall | 7 | 1486.6 | 8,388 | N/A | |
| agent task outcome explicit | overall | 8 | 0.1 | N/A | 20.5K | |
| agent praise complaint | overall | 9 | 0.1 | N/A | 6.2K | |
| agent steerability | overall | 9 | 0.1 | N/A | 22K | |
| webdev | overall | 9 | 1563.6 | 10,680 | N/A | |
| document style control | overall | 10 | 1481.8 | 8,193 | N/A | |
| search factuality | overall | 10 | 1199.3 | 48,610 | N/A | |
| search style control | overall | 10 | 1195.6 | 48,610 | N/A | |
| search | overall | 11 | 1204.9 | 48,610 | N/A | |
| document | overall | 12 | 1474.6 | 8,388 | N/A | |
| agent bash recovery steps | overall | 14 | 0.1 | N/A | 23.9K | |
| vision style control | overall | 14 | 1284.1 | 11,131 | N/A | |
| webdev | overall | 15 | 1539.6 | 9,559 | N/A | |
| document | overall | 16 | 1468.9 | 8,193 | N/A | |
| text style control | overall | 16 | 1482.4 | 39,987 | N/A | |
| agent bash recovery steps | overall | 17 | 0.1 | N/A | 30K | |
| agent | overall | 19 | 0.0 | N/A | 1.4M | |
| vision | overall | 21 | 1292.5 | 11,131 | N/A | |
| vision style control | overall | 21 | 1280.4 | 11,571 | N/A | |
| text factuality | overall | 22 | 1470.7 | 39,916 | N/A | |
| vision | overall | 22 | 1289.7 | 11,571 | N/A | |
| text style control | overall | 27 | 1472.9 | 40,639 | N/A | |
| text | overall | 28 | 1461.7 | 39,987 | N/A | |
| text factuality | overall | 30 | 1463.4 | 40,566 | N/A | |
| text | overall | 35 | 1451.8 | 40,639 | N/A | |
| agent tool hallucination | overall | 42 | -0.0 | N/A | 1.5M | |
| agent tool hallucination | overall | 45 | -0.3 | N/A | 1.3M |
Claude Opus 4.8 Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $5 input, $25 output per 1M
- Official provider
- Anthropic
- Lowest third-party
- From $0.425 input, $2.13 output per 1M via UnoRouter
- Tracked offerings
- 40
| Kenari | claude-opus-4-8 | global | N/A | N/A | 1M | |
| UnoRouter | claude-opus-4-8 | global | $0.425 | $2.13 | 1M | |
| Xpersona | claude-opus-4-8 | global | $1.5 | $9.25 | 200K | |
| Poe | anthropic/claude-opus-4.8 | global | $4.29 | $21.46 | 1M | |
| Impossibl | anthropic/claude-opus-4-8 | global | $5 | $25 | 1M | |
| CrossModel | anthropic/claude-opus-4-8 | global | $5 | $25 | 1M | |
| NanoGPT | anthropic/claude-opus-4.8 | global | $5 | $25 | 1M | |
| FastRouter | anthropic/claude-opus-4.8 | global | $5 | $25 | 1M | |
| DaoXE | claude-opus-4-8 | global | $5 | $25 | 1M | |
| LLM Gateway | claude-opus-4-8 | global | $5 | $25 | 1M | |
| OpenCode Zen | claude-opus-4-8 | global | $5 | $25 | 1M | |
| GitHub Copilot | claude-opus-4.8 | global | $5 | $25 | 200K | |
| Neon | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Pioneer | claude-opus-4-8 | global | $5 | $25 | 1M | |
| ZenMux | anthropic/claude-opus-4.8 | global | $5 | $25 | 1M | |
| Abacus | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Azure Cognitive Services | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Azure | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Vertex (Anthropic) | claude-opus-4-8@default | global | $5 | $25 | 1M | |
| AIHubMix | claude-opus-4-8 | global | $5 | $25 | 200K | |
| AIHubMix | claude-opus-4-8-think | global | $5 | $25 | 200K | |
| Ofox | anthropic/claude-opus-4.8 | global | $5 | $25 | 1M | |
| routing.run | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Vertex | claude-opus-4-8@default | global | $5 | $25 | 1M | |
| GMI Cloud | anthropic/claude-opus-4.8 | global | $5 | $25 | 1M | |
| FreeModel | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Amazon Bedrock | anthropic.claude-opus-4-8 | global | $5 | $25 | 1M | |
| Requesty | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Kilo Gateway | anthropic/claude-opus-4.8 | global | $5 | $25 | 1M | |
| Merge Gateway | anthropic/claude-opus-4-8 | global | $5 | $25 | 1M | |
| Modelis | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Vercel AI Gateway | anthropic/claude-opus-4.8 | global | $5 | $25 | 1M | |
| OpenRouter | anthropic/claude-opus-4.8 | global | $5 | $25 | 1M | |
| Anthropic | claude-opus-4-8 | global | $5 | $25 | 1M | |
| Cloudflare AI Gateway | anthropic/claude-opus-4-8 | global | $5 | $25 | 1M | |
| Cortecs | claude-opus4-8 | global | $5.44 | $27.19 | 1M | |
| Venice AI | claude-opus-4-8 | global | $6 | $30 | 1M | |
| Kilo Gateway | anthropic/claude-opus-4.8-fast | global | $10 | $50 | 1M |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Claude Opus 4.8 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Claude Opus 4.8 | 87.9 | N/A | 1M | 128K | No | Proprietary |
What is Claude Opus 4.8?
Key information about Claude Opus 4.8 and its available data.
7 and its most capable general-access model at release, with improvements across software engineering, agentic tool use, reasoning, computer use, and knowledge-work benchmarks while shipping at the same price ($5/$25 per million input/output tokens). 2%), and GDPval-AA (1890 Elo).
6 on dishonest agentic code summaries, and broadly improved adherence to Claude's constitution. The model defaults to high effort and exposes new 'extra' (xhigh) and 'max' levels for harder problems.
ai and Cowork, and a Messages API extension that accepts system entries inside the messages array so harnesses can update instructions mid-task without breaking the prompt cache. 5× speed at $10/$50 per million input/output tokens, three times cheaper than fast mode on previous models.
Available across Claude products, the Claude API as `claude-opus-4-8`, Amazon Bedrock, Google Cloud Vertex AI, and Microsoft Foundry.
Data as of 2026-08-11.
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FAQ
Common questions about Claude Opus 4.8.
When was Claude Opus 4.8 released?
Claude Opus 4.8's default version was released on May 28, 2026.
How much does Claude Opus 4.8 cost?
Claude Opus 4.8's official API price is $5 per million input tokens and $25 per million output tokens via Anthropic. The lowest tracked third-party offer starts at $0.425 input and $2.13 output via UnoRouter.
Who created Claude Opus 4.8?
Claude Opus 4.8 was created by Anthropic.
What is the context window for Claude Opus 4.8?
The default version has a 1M token context window.
Is Claude Opus 4.8 open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Claude Opus 4.8?
40 provider offerings are linked to the default version.
What models should I compare Claude Opus 4.8 with?
Nearby ranked alternatives include Kimi K3, Qwen3.8 Max, Muse Spark 1.1.