AnthropicText

Claude Opus 4.8

Frontier reasoning, long context and reliable tool use.

Claude Opus 4.8 is a frontier text model for reasoning, long-context work and dependable tool use. Great for agents, analysis and production copy.

Start creating free →API reference

TXT · GEN · 2026

Specs

Context window: 500K tokens
Max output: 64K tokens
Streaming: Yes
Tool use: Native

Capabilities

ReasoningLong contextTool useAgents

Sample prompt

write a punchy launch tagline for a sparkling drink brand

Pricing

$1.20 / 1M tokens

Pay as you go. Credits never expire. Around 30% below market on average.

See pricing →

Call it via API.

curl -X POST https://api.polyforge.ai/v1/generations \
  -H "Authorization: Bearer $POLYFORGE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "model": "claude-opus-4-8", "prompt": "write a punchy launch tagline for a sparkling drink brand" }'

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