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 →
QUICK VERDICT — AUGUST 2026
Claude Opus 5 for production now: Verified benchmarks, US data residency, Anthropic FLI C+ safety posture, effort toggle, 128K output. The model with evidence you can audit before procurement.
Qwen3.8-Max-Preview to watch: Test via Token Plan for tasks where a larger frontier model's ceiling matters. If independent benchmarks confirm the Fable 5 proximity claim, Qwen3.8 could offer 2-4x cost reduction vs Opus 5 at comparable quality.
Last updated August 3, 2026. Related: Qwen3.8-Max full fact-check → · Claude Opus 5 full review →