GPT-6.1 Terra API pricing
GPT-6.1 Terra costs $1 per million input tokens and $5 per million output tokens. A typical chatbot request (about 1,500 input + 400 output tokens) costs $0.0035, or $3.50 per 1,000 requests.
0 characters0 words0 tokens (GPT o200k)
| Model | Per month |
|---|---|
| GPT-6.1 Terra |
≈ = estimated token count: only OpenAI publishes its tokenizer. Claude counts use Anthropic’s published ratios; use the count_tokens API for an exact number.
GPT-6.1 Terra price per million tokens
USD, OpenAI standard tier. Prices checked on October 28, 2026.
| Token type | Price per 1M | With Batch API |
|---|---|---|
| Input | $1 | $0.5 |
| Cached input | $0.05 | $0.025 |
| Output | $5 | $2.5 |
| Input, prompts above 272K | $2 | $1 |
| Cached input, above 272K | $0.1 | $0.05 |
| Output, prompts above 272K | $7.5 | $3.75 |
Above 272K prompt tokens the higher rate applies to the whole request.
Model ID: gpt-6.1-terra · Source: developers.openai.com
What a GPT-6.1 Terra request costs
| Request | Per request | Per 1,000 |
|---|---|---|
| Short chat reply 500 input + 200 output tokens | $0.0015 | $1.50 |
| Chatbot turn with context 1,500 input + 400 output tokens | $0.0035 | $3.50 |
| Document Q&A (RAG) 8,000 input + 500 output tokens | $0.01 | $10.50 |
| Long-document summary 150,000 input + 2,000 output tokens | $0.16 | $160 |
Token counts are measured with GPT's o200k tokenizer and converted for GPT-6.1 Terra (see below). No caching or batch discount.
Similarly priced models
| Model | Chatbot request | vs GPT-6.1 Terra |
|---|---|---|
| GPT-5.4 mini OpenAI | $0.0029 | −16% |
| Grok 4.3 xAI | $0.0030 | −15% |
| Grok 4.20 xAI | $0.0030 | −15% |
| o4-mini OpenAI | $0.0034 | −3% |
| Claude Haiku 4.5 Anthropic | $0.0037 | +4% |
| DeepSeek V4 Pro DeepSeek | $0.0037 | +5% |
Frequently asked questions
How much does the GPT-6.1 Terra API cost?
GPT-6.1 Terra costs $1 per million input tokens and $5 per million output tokens on OpenAI's standard tier, rising to $2 / $7.5 for prompts above 272K tokens. Prices checked on October 28, 2026.
How much does one GPT-6.1 Terra request cost?
A typical chatbot request with about 1,500 input and 400 output tokens costs about $0.0035, or $3.50 per 1,000 requests. Paste your own prompt into the calculator on this page for an exact estimate.
Does GPT-6.1 Terra support prompt caching?
Yes. Cached input costs $0.05 per million tokens, 95% less than regular input.
Does GPT-6.1 Terra have a Batch API discount?
Yes: 50% off for requests sent through the Batch API, which may take up to 24 hours. That makes it $0.5 / $2.5 per million input / output tokens.
How are GPT-6.1 Terra tokens counted?
GPT-6.1 Terra's tokenizer is not published; we use the o200k count, which is close for newer OpenAI models.