Model Comparison

ChatGPT-4o Latest vs DeepSeek-V4-Flash-0731Which is better in 2026?

Comparing ChatGPT-4o Latest and DeepSeek-V4-Flash-0731 across benchmarks, pricing, and capabilities.

Verdict: ChatGPT-4o Latest vs DeepSeek-V4-Flash-0731 — which is better?

ChatGPT-4o Latest (by OpenAI) and DeepSeek-V4-Flash-0731 (by DeepSeek) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

On price, DeepSeek-V4-Flash-0731 is roughly 38.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

DeepSeek-V4-Flash-0731 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose ChatGPT-4o Latest if…

  • you want predictable pricing at $2.50/M input and $10.00/M output

Choose DeepSeek-V4-Flash-0731 if…

  • cost matters — it's about 38.9x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Jul 2026
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

ChatGPT-4o Latest and DeepSeek-V4-Flash-0731don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V4-Flash-0731 costs less

For input processing, ChatGPT-4o Latest ($2.50/1M tokens) is 27.8x more expensive than DeepSeek-V4-Flash-0731 ($0.09/1M tokens).

For output processing, ChatGPT-4o Latest ($10.00/1M tokens) is 55.6x more expensive than DeepSeek-V4-Flash-0731 ($0.18/1M tokens).

In conclusion, ChatGPT-4o Latest is more expensive than DeepSeek-V4-Flash-0731.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Tue Aug 04 2026 • llm-stats.com
OpenAI
ChatGPT-4o Latest
Input tokens$2.50
Output tokens$10.00
Best providerOpenAI
DeepSeek
DeepSeek-V4-Flash-0731
Input tokens$0.09
Output tokens$0.18
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

DeepSeek-V4-Flash-0731 accepts 1,048,576 input tokens compared to ChatGPT-4o Latest's 128,000 tokens. DeepSeek-V4-Flash-0731 can generate longer responses up to 65,536 tokens, while ChatGPT-4o Latest is limited to 16,384 tokens.

OpenAI
ChatGPT-4o Latest
Input128,000 tokens
Output16,384 tokens
DeepSeek
DeepSeek-V4-Flash-0731
Input1,048,576 tokens
Output65,536 tokens
Tue Aug 04 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

ChatGPT-4o Latest supports multimodal inputs, whereas DeepSeek-V4-Flash-0731 does not.

ChatGPT-4o Latest can handle both text and other forms of data like images, making it suitable for multimodal applications.

ChatGPT-4o Latest

Text
Images
Audio
Video

DeepSeek-V4-Flash-0731

Text
Images
Audio
Video

License

Usage and distribution terms

ChatGPT-4o Latest is licensed under a proprietary license, while DeepSeek-V4-Flash-0731 uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

ChatGPT-4o Latest

Proprietary

Closed source

DeepSeek-V4-Flash-0731

MIT

Open weights

Release Timeline

When each model was launched

ChatGPT-4o Latest was released on 2024-05-13, while DeepSeek-V4-Flash-0731 was released on 2026-07-31.

DeepSeek-V4-Flash-0731 is 27 months newer than ChatGPT-4o Latest.

ChatGPT-4o Latest

May 13, 2024

2.2 years ago

DeepSeek-V4-Flash-0731

Jul 31, 2026

4 days ago

2.2yr newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

ChatGPT-4o Latest is available from OpenAI. DeepSeek-V4-Flash-0731 is available from DeepInfra, Fireworks, Novita.

ChatGPT-4o Latest

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

DeepSeek-V4-Flash-0731

deepinfra logo
Deepinfra
Input Price:Input: $0.09/1MOutput Price:Output: $0.18/1M
fireworks logo
Fireworks
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M
novita logo
Novita
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Supports multimodal inputs
DeepSeek
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against ChatGPT-4o Latest and DeepSeek-V4-Flash-0731 side-by-side, then vote on the output you prefer.

ChatGPT-4o Latest
✓ Preferred
DeepSeek-V4-Flash-0731
Open in Playground
AI Model Comparison Table
Feature
OpenAI
ChatGPT-4o Latest
DeepSeek
DeepSeek-V4-Flash-0731

FAQ

Common questions about ChatGPT-4o Latest vs DeepSeek-V4-Flash-0731.

Which is better, ChatGPT-4o Latest or DeepSeek-V4-Flash-0731?

ChatGPT-4o Latest (OpenAI) and DeepSeek-V4-Flash-0731 (DeepSeek) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does ChatGPT-4o Latest compare to DeepSeek-V4-Flash-0731 in benchmarks?

ChatGPT-4o Latest scores GPQA: 84.0%. DeepSeek-V4-Flash-0731 scores Terminal-Bench 2.1: 82.7%, CyberGym: 76.7%, Toolathlon: 70.3%, DSBench-FullStack: 68.7%, DSBench-Hard: 59.6%.

Is ChatGPT-4o Latest cheaper than DeepSeek-V4-Flash-0731?

DeepSeek-V4-Flash-0731 is 27.8x cheaper for input tokens. ChatGPT-4o Latest costs $2.50/M input and $10.00/M output via openai. DeepSeek-V4-Flash-0731 costs $0.09/M input and $0.18/M output via deepinfra.

What are the context window sizes for ChatGPT-4o Latest and DeepSeek-V4-Flash-0731?

ChatGPT-4o Latest supports 128K tokens and DeepSeek-V4-Flash-0731 supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between ChatGPT-4o Latest and DeepSeek-V4-Flash-0731?

Key differences include context window (128K vs 1.0M), input pricing ($2.50 vs $0.09/M), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes ChatGPT-4o Latest and DeepSeek-V4-Flash-0731?

ChatGPT-4o Latest is developed by OpenAI and DeepSeek-V4-Flash-0731 is developed by DeepSeek.

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