Kimi K2.5 vs GPT-6.1 Terra: price, context window and capabilities
Kimi K2.5 (moonshotai/kimi-k2.5) from MoonshotAI and GPT-6.1 Terra (openai/gpt-6.1-terra) from OpenAI are both multimodal language models on the OceanToken API. Kimi K2.5 costs less per token than GPT-6.1 Terra: $0.60 against $0.90 per 1M input tokens (33% less) and $3.00 against $4.50 per 1M output tokens (33% less). GPT-6.1 Terra is 10% off its official price on OceanToken, for every account. GPT-6.1 Terra has the larger context window: 1.05M tokens (1,050,000) against 262K (262,144) for Kimi K2.5. Both support tool calling, reasoning, structured outputs and image input; only GPT-6.1 Terra also lists file input.
Side by side
| Spec | Kimi K2.5 | GPT-6.1 Terra −10% |
|---|---|---|
| Model | Kimi K2.5moonshotai/ | GPT-6.1 Terraopenai/ |
| Publisher | MoonshotAI | OpenAI |
| Kind | Text & vision | Text & vision |
| Context window | 262K tokens262,144 | 1.05M tokens1,050,000 |
| Input price | $0.60 / 1M tokens | $0.90 / 1M tokens |
| Output price | $3.00 / 1M tokens | $4.50 / 1M tokens |
| Cached input price | $0.10 / 1M tokens | $0.05 / 1M tokens |
| Cache write price | – | $1.25 / 1M tokens |
| Web search price | – | $0.01 / search |
| Discount (vs official, top tier) | — | −10% |
| Inputs | text and images | text, images and files |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Yes |
About these prices
Which should you choose?
- Choose Kimi K2.5 to spend less per token: 33% less for input and 33% less for output than GPT-6.1 Terra.
- Choose GPT-6.1 Terra for the longest inputs: its context window holds 1.05M tokens against 262K for Kimi K2.5.
- Choose GPT-6.1 Terra if you need file input: Kimi K2.5 does not list it.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key Kimi K2.5 GPT-6.1 Terra
Frequently asked questions
Which is cheaper, Kimi K2.5 or GPT-6.1 Terra?
Kimi K2.5. Kimi K2.5 costs less per token than GPT-6.1 Terra: $0.60 against $0.90 per 1M input tokens (33% less) and $3.00 against $4.50 per 1M output tokens (33% less). GPT-6.1 Terra is 10% off its official price on OceanToken, for every account. The OceanToken console always shows the current price.
Which has the larger context window, Kimi K2.5 or GPT-6.1 Terra?
GPT-6.1 Terra. GPT-6.1 Terra has the larger context window: 1.05M tokens (1,050,000) against 262K (262,144) for Kimi K2.5.
Can I call both Kimi K2.5 and GPT-6.1 Terra with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id moonshotai/kimi-k2.5 or openai/gpt-6.1-terra.
Models and publishers
Kimi K2.5 · GPT-6.1 Terra · All MoonshotAI models · All OpenAI models
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