DeepSeek V4 Flash 0731 vs GPT-6.1 Terra: price, context window and capabilities
DeepSeek V4 Flash 0731 (deepseek/deepseek-v4-flash-0731) is a language model from DeepSeek and GPT-6.1 Terra (openai/gpt-6.1-terra) a multimodal language model from OpenAI; both are on the OceanToken API. DeepSeek V4 Flash 0731 costs less per token than GPT-6.1 Terra: $0.21 against $0.90 per 1M input tokens (77% less) and $0.84 against $4.50 per 1M output tokens (81% less). GPT-6.1 Terra is 10% off its official price on OceanToken, for every account. Their context windows are almost the same size, about 1.05M tokens: GPT-6.1 Terra takes 1,050,000 tokens and DeepSeek V4 Flash 0731 1,048,576. Both support tool calling, reasoning and structured outputs; only GPT-6.1 Terra also lists image input and file input.
Side by side
| Spec | DeepSeek V4 Flash 0731 −40% | GPT-6.1 Terra −10% |
|---|---|---|
| Model | DeepSeek V4 Flash 0731deepseek/ | GPT-6.1 Terraopenai/ |
| Publisher | DeepSeek | OpenAI |
| Kind | Text | Text & vision |
| Context window | 1.05M tokens1,048,576 | 1.05M tokens1,050,000 |
| Input price | $0.21 / 1M tokens | $0.90 / 1M tokens |
| Output price | $0.84 / 1M tokens | $4.50 / 1M tokens |
| Cached input price | $0.006 / 1M tokens | $0.05 / 1M tokens |
| Cache write price | – | $1.25 / 1M tokens |
| Web search price | – | $0.01 / search |
| Discount (vs official, top tier) | −40% | −10% |
| Inputs | text | 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 DeepSeek V4 Flash 0731 to spend less per token: 77% less for input and 81% less for output than GPT-6.1 Terra.
- Context size does not separate them: both hold about 1.05M tokens.
- Choose GPT-6.1 Terra if you need image input and file input: DeepSeek V4 Flash 0731 does not list them.
- 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 DeepSeek V4 Flash 0731 GPT-6.1 Terra
Frequently asked questions
Which is cheaper, DeepSeek V4 Flash 0731 or GPT-6.1 Terra?
DeepSeek V4 Flash 0731. DeepSeek V4 Flash 0731 costs less per token than GPT-6.1 Terra: $0.21 against $0.90 per 1M input tokens (77% less) and $0.84 against $4.50 per 1M output tokens (81% 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, DeepSeek V4 Flash 0731 or GPT-6.1 Terra?
GPT-6.1 Terra, by 1,424 tokens. Their context windows are almost the same size, about 1.05M tokens: GPT-6.1 Terra takes 1,050,000 tokens and DeepSeek V4 Flash 0731 1,048,576.
Can I call both DeepSeek V4 Flash 0731 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 deepseek/deepseek-v4-flash-0731 or openai/gpt-6.1-terra.
Models and publishers
DeepSeek V4 Flash 0731 · GPT-6.1 Terra · All DeepSeek models · All OpenAI models
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