🇺🇸 United States🔬 ReasoningReleased May 2026
Claude Opus 4.8
Anthropic
FreeRGPD
Verdict
The default choice when quality matters more than budget.
Overview
Claude Opus 4.8, released May 28 2026, is Anthropic's most capable general-access model, with strong gains in agentic coding and math and notable honesty improvements. 1M-token context.
Skill profile
Arena Elo1484
Verified benchmarks
GPQA93.6%
SWE-Bench88.6%
MATH96.7%
MMLU91.5%
HumanEval96.5%
What do these scores mean?
GPQA93.6%world-class
PhD-level science questions (physics, chemistry, biology), with no tool access.
SWE-Bench88.6%excellent
Resolving real GitHub issues under real conditions (SWE-bench Verified).
MATH96.7%world-class
Competition-level math problems.
MMLU91.5%world-class
General knowledge across dozens of academic subjects.
HumanEval96.5%world-class
Python code generation from specifications.
Strengths
- Top-tier reasoning
- Excellent at code
- Strong French quality
- World-class on Arena
Limitations
- High output cost
- Average speed
Who is it for
A good fit if…
- you need advanced reasoning or analysis
- you build with a coding agent
- you work in French
- you have GDPR constraints
Skip it if…
- your budget is tight
- you need very fast responses
Ideal use cases
- Long document analysis
- Agentic coding
- Complex research
- Premium writing
- Strategic tasks
Access & availability
Paid API per tokenFree tier availableConsumer subscription (~20€/mo)
Key specifications
Context
1M
Input price
$5.00 $/M
Output price
$25.00 $/M
Speed
75 tok/s
Price verified Jun 1, 2026·Official source ↗Benchmarks verified Jun 1, 2026·Official source ↗
Estimate your monthly cost
Per-token API pricing$327/ month with Claude Opus 4.8
For the same usage
- DeepSeek R2$32-90%
- o3$117-64%
- Claude Opus 4.7$327=
Indicative estimate based on standard API rates (excluding caching, batch and volume discounts). Always check the official pricing before committing.
Privacy
GDPR-compliantHosting : US/EUAnonymizable data
Advanced data · for expertsArchitecture, modalities, detailed cost, full benchmarks▾
Advanced data · for experts
Architecture, modalities, detailed cost, full benchmarks
Architecture
Dense
Size
undisclosed
Cutoff date
Apr 2025
Inputs
text, image, document
Outputs
text, code
License
commercial
Hosting
US/EU
Hallucination score
5/5
Estimated cost (API)
Typical exchange (~3k in / 1k out)
≈ $0.0400
1M in + 1M out
≈ $30.00
All benchmarks
| Arena Elo | 1484 |
| MMLU | 91.5% |
| GPQA | 93.6% |
| HumanEval | 96.5% |
| SWE-Bench | 88.6% |
| MATH | 96.7% |