Claude Opus 4.8
Anthropic · Released May 28, 2026
$5
Input price / MTok
#24 of 27$25
Output price / MTok
#24 of 271.0M
Context window
#6 of 2865
Tokens / sec
#19 of 2188.6
SWE-bench Verified
#2 of 1269.2
SWE-bench Pro
#2 of 993.6
GPQA Diamond
#2 of 1983.4
OSWorld
#2 of 8Summary
Claude Opus 4.8 is a proprietary language model from Anthropic, released on May 28, 2026.
At $5 input and $25 output per million tokens, it ranks #24 of 27 for input price, placing it among the higher-priced models tracked here.
Its context window of 1.0M tokens ranks #6 of 28 for context depth in this dataset.
It targets coding, agents, reasoning workloads.
Throughput is measured at 65 tokens per second (ranked #19 of 21 for throughput).
Best of the 4.x line for complex agentic and coding work.
Benchmarks
| Benchmark | Score | Max | % | Rank | Source |
|---|---|---|---|---|---|
| SWE-bench Verified | 88.6 | 100 | 88.6% | #2/12 | Anthropic (self-reported in official sys... |
| SWE-bench Pro | 69.2 | 100 | 69.2% | #2/9 | Anthropic (self-reported in official sys... |
| GPQA Diamond | 93.6 | 100 | 93.6% | #2/19 | Anthropic (self-reported in official sys... |
| OSWorld | 83.4 | 100 | 83.4% | #2/8 | Anthropic (self-reported in official sys... |
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Speed source: https://artificialanalysis.ai/models/claude-opus-4-8