Claude 4.5 Haiku vs GPT-5.6 Sol
Direct spec comparison of Claude 4.5 Haiku (from Anthropic) and GPT-5.6 Sol (from OpenAI). Want a 3- or 4-way comparison? Open the multi-model tool →
 Claude 4.5 HaikuAnthropic |  GPT-5.6 SolOpenAI | |
|---|---|---|
| Vendor | Anthropic | OpenAI |
| Family | Claude | GPT |
| Release date | 2025-10-01 | 2026-06-26 |
| Context window | 200,000 tokens | — |
| Parameters | — | — |
| Modality | text, vision | text, vision, audio |
| License | proprietary | proprietary |
| Source | proprietary | proprietary |
| Description | Fast, cost-effective Claude model. | Flagship of OpenAI's GPT-5.6 three-model suite (Sol / Terra / Luna), released as a limited preview. Strong gains in coding, cybersecurity, biology, and long-horizon agentic work. Pricing: $5 / $30 per million input/output tokens. |
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