Official-source comparison

GPT-5.6 Sol vs Claude Sonnet 5

OpenAI vs Anthropic. Quantify the token-cost difference before evaluating model quality separately.

VerifiedRecently verified against the official source. Last successfully verified 2026-10-23 UTC.

USD token-only estimates using each offering’s published default tier. 1M tokens are an aggregate workload, not a single request. Cache savings, batch discounts, long-context surcharges, tools, taxes and negotiated rates are excluded. Tokenizers and capabilities may differ; lower price does not establish equivalent quality.

Current cost comparison is paused because one or both quotes are not verified. The rates below are historical references, not current offers.

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Historical prices and specifications; current estimates paused
MetricGPT-5.6 SolOpenAIClaude Sonnet 5Anthropic
Input / 1M tokens$4.00$2.00
Output / 1M tokens$20.00$10.00
Cached input / 1M$0.40Not published
Context window1,050,000Not published
Maximum output128,000Not published
1M input + 1M outputPausedPaused
Default pricing basisstandardstandard
Last verified (UTC)2026-09-09T01:36:53.730Z2026-10-23T00:19:51.655Z

Official sources and pricing scope