#API Pricing

Artificial Analysis ran GPT-6 Sol and Claude Opus 5.5 on the same tests. Sol is cheaper up to a point; Opus 5.5 at its default outscores Sol at max.

GPT-6 Sol costs $2/$10 and Luna $0.10/$0.50 per million tokens, half GPT-5.6's price. What OpenAI's own charts show about scores and effort.

Opus 5.5 outscores Fable 5.1 on every coding benchmark Anthropic published, at 40% of the token price. When Fable 5.1 still earns its place.

Grok 4.7 lists at under a third of Opus 5.5's output price, yet costs twice as much per task in Artificial Analysis tests. Where Muse Spark 1.3 fits.

Claude Opus 5.5 lists at 40% of GPT-6 Astra's price with no long-context surcharge. Where each leads, and where the vendors' benchmarks disagree.

Claude Opus 5.5 costs $4/$20 per million tokens, defaults to medium effort and breaks four Opus 5 integrations. What the 40% saving assumes.

xAI released Grok 4.7 on September 21, 2026 at Grok 4.6's $2/$6 list price. The vendor-run benchmark table, the route price you are billed, three questions.

DeepSeek V4.1 Flash adds vision and lower prices. Compare 19 official benchmarks, agent frameworks and API costs; V4 Pro now continues past September 14.

Compare Astra and Fable 5.1 pricing, cache costs, context limits and access rules, then choose a model for coding, document work or long agent runs.

ChatGPT Images 2.5 adds new creative controls and two API models. Compare Flare and Sunburst, verified token prices, and a practical rollout plan.

GLM-5.3's direct token-metered API went live on August 18. Thinking can no longer be disabled, and the effort tiers are low, high and max only.

DeepSeek's changelog now carries a GA entry for V4-Pro across app, web, and API, MIT-licensed 0813 weights on Hugging Face, and pricing changing August 16.

On August 12, DeepSeek's pricing page listed V4-Pro-0813 with no changelog entry and a homepage saying nothing had changed. GA was announced a day later.

xAI's Grok 4.6 keeps Grok 4.5's headline rates, but the $2/$6 tier only holds below a 200K-token prompt: cross it and the whole request reprices.

Where should you buy GLM-5.2 tokens? Z.ai lists $1.40 in / $4.40 out per Mtok, but 20+ hosts undercut it. A July 2026 price and output-cap comparison guide.