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Claude Opus 4.8 Fast

anthropic·anthropic/claude-opus-4-8-fast·GA·Closed·claude-opus series
Top Claude Opus tier for the hardest reasoning, coding, and long-horizon agents

Specs & pricing

Input / output per 1M tokens
Reference price·Venice AI
$12.00 / $60.00
Blended $24.00 · Cache read $1.20
Lowest paid·Vercel AI GatewayCloud
$10.00 / $50.00
Blended $20.00 · 1.2× spread
Context
1,000,000
Output limit
128,000
Knowledge cutoff
2026-01
Released / updated
2026-05-28 / 2026-06-11
Capabilities
✓ Reasoning✓ Tool use✓ Structured outputTemperature✓ Attachments
Modalities
TextImagePDF

Available at 2 providers2 with public prices

ProviderTierInputOutputCache readCache writeContextOutput limitStatus
Vercel AI Gateway
anthropic/claude-opus-4.8-fast
Cloud$10.00$50.00$1.00$12.501,000,000128,000
Venice AIGateway$12.00$60.00$1.20$15.001,000,000128,000

Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.

Reasoning control

effort = noneeffort = loweffort = mediumeffort = higheffort = xhigheffort = maxbudget_tokens

Your usage cost

1Vercel AI Gateway$3,420.00
2Venice AI$4,104.00
The cheapest paid channel is the only channel.

Price historyone sample accumulated per data sync

Input listOutput listMin blended
$60.00$02026-08-052026-08-132026-08-05 · Input list $12.002026-08-06 · Input list $12.002026-08-07 · Input list $12.002026-08-08 · Input list $12.002026-08-09 · Input list $12.002026-08-10 · Input list $12.002026-08-11 · Input list $12.002026-08-12 · Input list $12.002026-08-13 · Input list $12.002026-08-05 · Output list $60.002026-08-06 · Output list $60.002026-08-07 · Output list $60.002026-08-08 · Output list $60.002026-08-09 · Output list $60.002026-08-10 · Output list $60.002026-08-11 · Output list $60.002026-08-12 · Output list $60.002026-08-13 · Output list $60.002026-08-05 · Min blended $20.002026-08-06 · Min blended $20.002026-08-07 · Min blended $20.002026-08-08 · Min blended $20.002026-08-09 · Min blended $20.002026-08-10 · Min blended $20.002026-08-11 · Min blended $20.002026-08-12 · Min blended $20.002026-08-13 · Min blended $20.00

Related models

Claude Opus 5.5 Fastsame series$9.60 / $48.00Claude Opus 5.5same series$4.00 / $20.00Claude Opus 5.5 (EU)same series$4.40 / $22.00GLM-5.2cheaper alternative$1.40 / $4.40Kimi K3cheaper alternative$3.00 / $15.00GLM-5.3cheaper alternative$1.40 / $4.40GLM-5.3-Flashcheaper alternative$0.15 / $0.50
Data partly from models.dev (MIT) · Venice AI official docs ↗