Anthropic: Claude Sonnet 5.5 vs OpenAI: GPT-6.1 Terra
anthropic vs openai
On price, OpenAI: GPT-6.1 Terra is cheaper (blended cost is about 0.50× that of Anthropic: Claude Sonnet 5.5).
On capability, Anthropic: Claude Sonnet 5.5 has the higher intelligence index (55) — better for complex reasoning.
Verdict: pick OpenAI: GPT-6.1 Terra on a budget, or Anthropic: Claude Sonnet 5.5 for output quality. Full details below.
Side-by-Side Specs
| Metric | Anthropic: Claude Sonnet 5.5 | OpenAI: GPT-6.1 Terra |
|---|---|---|
| Input /1M | $2.00 | $1.00 |
| Output /1M | $10.00 | $5.00 |
| Blended (3:1) | $4.00 | $2.00 |
| Context | 1.0M | 1.1M |
| Intelligence | 55 | 51 |
| Coding | — | — |
| Math | — | — |
| Speed | 136 tok/s | 114 tok/s |
| CPS Grade | A | A |
FAQ
Which is cheaper, Anthropic: Claude Sonnet 5.5 or OpenAI: GPT-6.1 Terra?
On price, OpenAI: GPT-6.1 Terra is cheaper (blended cost is about 0.50× that of Anthropic: Claude Sonnet 5.5). Anthropic: Claude Sonnet 5.5: $2 in / $10 out; OpenAI: GPT-6.1 Terra: $1 in / $5 out (per 1M tokens).
Which is smarter, Anthropic: Claude Sonnet 5.5 or OpenAI: GPT-6.1 Terra?
On capability, Anthropic: Claude Sonnet 5.5 has the higher intelligence index (55) — better for complex reasoning. Coding index: Anthropic: Claude Sonnet 5.5 — vs OpenAI: GPT-6.1 Terra —.
Which one should I choose?
Verdict: pick OpenAI: GPT-6.1 Terra on a budget, or Anthropic: Claude Sonnet 5.5 for output quality. Full details below.