token.app › Compare › Claude Opus 4.8 (Fast) vs GPT-5.6 Sol

Claude Opus 4.8 (Fast) vs GPT-5.6 Sol

GPT-5.6 Sol is 1.8× cheaper per token on a blended 3:1 basis. GPT-5.6 Sol accepts the larger context window (1.1M).

Head to head
Blended price uses a 3:1 input:output mix
Claude Opus 4.8 (Fast)GPT-5.6 Sol
ProviderAnthropicOpenAI
Input $/1M$10.00$5.00
Output $/1M$50.00$30.00
Blended $/1M$20.00$11.25
Context window1M1.1M
Max output128K128K
ReleasedMay 2026Jul 2026
LicenceProprietaryProprietary
Choose Claude Opus 4.8 (Fast) if…
  • No clear advantage on the data we hold.
Choose GPT-5.6 Sol if…
  • Costs less per token — $11.25 vs $20.00 blended
  • Larger context window (1.1M)
  • Newer model (released Jul 2026)
FAQ
Which is better, Claude Opus 4.8 (Fast) or GPT-5.6 Sol?
We do not hold independently-run benchmark scores covering both Claude Opus 4.8 (Fast) and GPT-5.6 Sol, so we make no quality claim. Their pricing and specifications are compared on this page.
Is Claude Opus 4.8 (Fast) cheaper than GPT-5.6 Sol?
GPT-5.6 Sol is cheaper: $11.25 versus $20.00 per million tokens blended at 3:1 input:output. Input alone: $10.00 vs $5.00. Output alone: $50.00 vs $30.00.
What context windows do Claude Opus 4.8 (Fast) and GPT-5.6 Sol have?
Claude Opus 4.8 (Fast): 1,000,000 tokens. GPT-5.6 Sol: 1,050,000 tokens.
Who makes Claude Opus 4.8 (Fast) and GPT-5.6 Sol?
Claude Opus 4.8 (Fast) is made by Anthropic. GPT-5.6 Sol is made by OpenAI.
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