Claude Sonnet 5.5 vs GPT-6.1 Sol API pricing
They have the same standard per-token price, so the bill is identical for any workload; check the fine print for long-context or other differences. Prices last checked 2026-10-13.
| Claude Sonnet 5.5 (Anthropic) | GPT-6.1 Sol (OpenAI) | |
|---|---|---|
| Input $/1M tokens | $2.0 | $2.0 |
| Output $/1M tokens | $10.0 | $10.0 |
| Context | — | — |
| Our tier (1–4) | 3 | 3 |
Example monthly bills
| Workload | Claude Sonnet 5.5 | GPT-6.1 Sol | Cheaper |
|---|---|---|---|
| Chat / Q&A 10M in / 2M out per month | $40.00 | $40.00 | Same cost |
| Coding 20M in / 5M out per month | $90.00 | $90.00 | Same cost |
| Output-heavy (reasoning, long answers) 10M in / 10M out per month | $120.00 | $120.00 | Same cost |
Fine print
- GPT-6.1 Sol: ≤272K input; long context $4/$15
Cost only, not quality. “Tier” is our rough capability judgment, not a benchmark, and different tokenizers count the same text differently. Reasoning models may bill extra thinking tokens as output. Official sources: Anthropic, OpenAI.
See all models on the full price table, the Anthropic and OpenAI pricing pages, or try the savings calculator with your own numbers.