Celon

Claude Opus 4.8

ChatInput: TextInput: ImageInput: FileReleased May 27, 2026

Built by Anthropic · United States · anthropic.com

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...

How to use

model: "anthropic/claude-opus-4.8"

Cap quality here and save

Hard questions go to this model, easy ones drop to something cheaper. Set a savings target (0–0.8) and the router tunes itself until realized savings converge on it.

{
  "model": "celon/auto",
  "celon": {
    "anchor": "anthropic/claude-opus-4.8",
    "savings_target": 0.4
  }
}

Naming a model directly gets you that model — savings controls don't apply.

Context

1M

Max output

64K

Input $/1M

$5.00

Output $/1M

$25.00

Features

Image inputTool callingJSON

Serving providers

Anthropic

Providers

Price, latency, and uptime per provider serving this model. Celon routes each request to the fastest and cheapest of them. Click a row for regions and data policies.

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Performance

Benchmark quality scores, and measured speed per provider.

Quality

Epoch Capabilities IndexComposite over 50+ benchmarks
157.8
GPQA DiamondPhD-level science questions
91.0%
AIMECompetition mathematics
98.3%
FrontierMathResearch-level mathematics
47.2%
SciCodeScientific code generation
53.5%
ARC-AGI-2Abstract reasoning
72.1%
SimpleQA VerifiedFactual accuracy
39.5%

At each model's best reasoning effort. Benchmarks it wasn't run on are omitted.

Speed

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