Compare
DeepSeek V4 Flash vs Openai Gpt 4o
This page is context-first: how much text each model can take in one request. Full specs adds capabilities and limits; the pricing matrix below is only about $/million tokens from hosts that list both models.
Model
DeepSeek V4 Flash
Context window
1.0M
1,048,576 tokens · ~786K words
Context window · side by side
Bar length is relative to the larger of the two windows (100% = max of this pair). This is not pricing.
DeepSeek V4 Flash has about 8.2× the context window of the other in this pair.
DeepSeek V4 Flash has 719% more context capacity (1048K vs 128K tokens).
Quick verdicts
Short takeaways — validate with your own workloads.
Long document processing
Use DeepSeek V4 Flash. Its 1048K context fits entire documents without chunking (vs 128K).
Full specs
Context, output, capabilities, and dates. Green highlights the favorable value where we compute a winner.
| Spec | DeepSeek V4 Flash | Openai Gpt 4o |
|---|---|---|
| Context window | 1,048,576 tokens (1048K) | 128,000 tokens (128K) |
| Max output tokens | 384,000 tokens (384K) | N/A |
| Speed tier | Fast | Balanced |
| Vision | No | No |
| Function calling | Yes | No |
| Extended thinking | Yes | No |
| Prompt caching | Yes | No |
| Batch API | No | Yes |
| Release date | Apr 2026 | N/A |
Pricing matrix
Dollar rates only: hosts that list both models, per 1M tokens. For how much text fits, use the context section above — not this table.
| Provider | DeepSeek V4 Flash in | DeepSeek V4 Flash out | Openai Gpt 4o in | Openai Gpt 4o out |
|---|---|---|---|---|
| Gradient | — | — | — | — |
Frequently asked questions
Powered by Mem0
Use a smaller model.
Get better results.
Mem0 gives your AI long-term memory so you stop re-sending context on every call. That means you can use a smaller, faster, cheaper model — and still get better answers.
Example: a multi-turn chat session
80% less to send — works with any model