Updated June 2026
Claude Opus 4.8 API Access in 2026
Claude Opus 4.8 is Anthropic's most capable model — designed for complex reasoning, long contexts, and premium tasks. Through Claude Api.Tech, Opus 4.8 is available without a separate subscription.
One key, all models
sk-cs2-* key gives access to Fable 5, Opus 4.8, Sonnet 4.6, and Haiku 4.5. Switch models by changing the model parameter — no new key required.
Available models
| Model | Input | Output | Context |
|---|---|---|---|
NEWClaude Fable 5 | $8 / 1M | $40 / 1M | 200K |
MAXClaude Opus 4.8 | $8 / 1M | $40 / 1M | 200K |
FASTClaude Sonnet 4.6 | $2.40 / 1M | $12 / 1M | 200K |
LITEClaude Haiku 4.5 | $0.80 / 1M | $4 / 1M | 200K |
Claude Opus 4.8 — specifications
Context window
200,000 tokens
Input
$15 / 1M tokens
Output
$75 / 1M tokens
Extended Thinking
Supported
API formats
Anthropic + OpenAI-compat
Streaming
SSE supported
Best use cases
- →Complex architecture and code review
- →Long document analysis (200K context)
- →Premium reasoning and research
- →Extended Thinking for multi-step problems
- →Production AI agents with deep reasoning
About pricing
At Claude Api.Tech you pay for Anthropic-equivalent tokens at up to −20% vs official. Credits never expire. No monthly fee.
Access Opus 4.8 API →$1.50 bonus on signup · No card required