MODEL VERSIONS ON THIS PAGE HAVE MOVED — CHECKED 8 OCTOBER 2026
Current line, with published API pricing per million tokens:
●
OpenAI — GPT-6 Sol (paid ChatGPT), GPT-6 Luna ($0.10 / $0.50), GPT-6.1 Sol ($2.00 / $10.00), GPT-6 Astra
●
Anthropic — Claude Opus 5.5, Sonnet 5.5 ($2.00 / $10.00), Haiku 5.5 ($0.10 / $0.50 below 100K), Fable 5.1
●
xAI — Grok 4.3 ($1.25 / $2.50), Grok 4.7 ($2.00 / $6.00)
●
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 29 — NEW DATA SINCE LAUNCH
● Opus 5 Arena.ai Frontend Code: #1 preliminary at 1,725 Elo (still accumulating votes)
● Grok 4.5 DeepsecBench: Price-performance winner — $5.60-$11/run vs Sol $56/run
● Grok 4.5 hallucination (new): Artificial Analysis confirmed doubled rate vs Grok 4.3 (25% → 54%)
● Price unchanged: Opus 5 $5/$25/M · Grok 4.5 $2/$6/M
● Who signs the pacing petition: Anthropic staff (Clark, Kaplan). No xAI equivalent.
Claude Opus 5 for: Writing quality, reasoning (ARC-AGI-3 30.2%), Arena #1 on frontend coding (blind user preference), voice with tool access, effort control (5-level toggle), and regulated industries where Anthropic's safety posture (FLI C+, RSP, petition signatories) matters.
Grok 4.5 for: High-volume coding at lower cost (60-76% cheaper), cybersecurity scanning (DeepsecBench price-performance winner at $5.60/run), live X data, and SuperGrok subscribers who want voice + coding in one plan. Validate hallucination rate on your tasks first — Artificial Analysis confirmed 54% (doubled from 4.3).
Last updated July 29, 2026. Related: Opus 5 Arena.ai #1 → · Grok 4.5 DeepsecBench →