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Put models side by side on price, context, capabilities, and benchmarks.
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.
AuthorAnthropic
Country🇺🇸 United States
ReleasedSep 22, 2026
Overview
Cost rate
4x
Context
1M
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$4.00
Cached input$0.20
Output$20.00
Context
Context length1,000,000
Max output tokens128,000
Knowledge cutoff-
Performance
Throughput90 tok/s
Latency39.8s
GPT-6 Sol is the cost-efficient high-end model in OpenAI's GPT-6 series, positioned below the flagship GPT-6 Astra and above the fast GPT-6 Luna tier.
AuthorOpenAI
Country🇺🇸 United States
ReleasedSep 22, 2026
Overview
Cost rate
2x
Context
1.1M
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$2.00
Cached input$0.20
Output$10.00
Context
Context length1,050,000
Max output tokens128,000
Knowledge cutoff-
Performance
Throughput114 tok/s
Latency1.96s
Benchmarks
Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.
Intelligence
57.6
Claude Opus 5.5 (Adaptive Reasoning, Max Effort, Default Fallback)
Claude Opus 5.5 (Adaptive Reasoning, Max Effort, Default Fallback)53.4Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)
Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)52.7
