$ diff gpt-6-1-sol claude-sonnet-5-5
GPT-6.1 Sol vs Claude Sonnet 5.5
Values come from GPT-6.1 Sol and Claude Sonnet 5.5, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
OpenAIGPT-6.1 Sol
- context
- 1.1M
- weights
- closed
- $/M in
- $2
- $/M out
- $10
- context
- 1M
- weights
- closed
- $/M in
- $2
- $/M out
- $10
What actually differs
- Context window
- GPT-6.1 Sol takes 1.1M against 1M — modestly more room in a single request.
- Recency
- GPT-6.1 Sol shipped 1 day after Claude Sonnet 5.5 (2026-09-29 vs 2026-09-28).
Full spec
| Attribute | GPT-6.1 Sol | Claude Sonnet 5.5 |
|---|---|---|
| Developer | OpenAI | Anthropic |
| Released | 2026-09-29 | 2026-09-28 |
| Context window | 1.05M tokens | 1M tokens |
| Pricing | $2/M input · $10/M output · cached input $0.10/M | $2/M input · $10/M output · cache reads 10% of base input |
| License | proprietary (API-only; no weight release) | proprietary (API-only; no weight release) |
| Availability | OpenAI API; Codex; ChatGPT Work — surfaces named in reporting, not enumerated by a first-party page | Claude apps, Claude API as `claude-sonnet-5-5`, Amazon Bedrock, Google Cloud Vertex AI, Microsoft Foundry, Claude Platform on AWS |