MODEL VERSIONS ON THIS PAGE HAVE MOVED — CHECKED 8 OCTOBER 2026
Current line, with published API pricing per million tokens:
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OpenAI — GPT-6 Sol (paid ChatGPT), GPT-6 Luna ($0.10 / $0.50), GPT-6.1 Sol ($2.00 / $10.00), GPT-6 Astra
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Anthropic — Claude Opus 5.5, Sonnet 5.5 ($2.00 / $10.00), Haiku 5.5 ($0.10 / $0.50 below 100K), Fable 5.1
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xAI — Grok 4.3 ($1.25 / $2.50), Grok 4.7 ($2.00 / $6.00)
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Google — Gemini 3.5 Flash-Lite ($0.30 / $2.50), Gemini 3.8 Flash ($0.75 / $3.75 to 31 Dec), Gemini 4 Argon
The comparison below is kept because the reasoning still holds — how these tiers trade price against capability has not changed. The version numbers and prices have.
Current pricing table →
UPDATED JULY 27 — K3 WEIGHTS NOW LIVE
● AA Intelligence Index: K3 #4 (score 57) — Opus 4.8 score ~52 (K3 leads)
● Price: K3 $3/$15/M — Opus 4.8 $5/$25/M (K3 40% cheaper)
● Agentic coding: K3 SWE Marathon 42.0% #1 — Opus 4.8 not published
● Self-hostable: K3 (weights live) — Opus 4.8 closed
● Hallucination: K3 51% (independent) — Opus 4.8 lower (Anthropic discloses Opus 5 higher, implying 4.8 baseline is better)
● Data residency: K3 hosted = China NI Law. K3 self-hosted = your cloud. Opus 4.8 = Anthropic US.
● Production maturity: Opus 4.8 — months of production use. K3 weights released today.
Kimi K3 (self-hosted) for: Teams with GPU infrastructure who need frontier-adjacent intelligence at lower cost, full data sovereignty, and no vendor dependency. The 51% hallucination finding means test on your specific tasks first — K3 is clearly superior for agentic coding and frontend; factual tasks need validation.
Claude Opus 4.8 for: Teams that need proven production stability (months of battle-testing), better hallucination profile, and US data residency without self-hosting overhead. Note: Opus 5 (launched July 24 at same price) supersedes Opus 4.8 for new workloads — upgrade to Opus 5 rather than staying on 4.8.
Last updated July 27, 2026. Related: K3 download guide → · Claude Opus 5 (replaces Opus 4.8) →