deepseek-r1 vs gpt-5.3-codex
Side-by-side comparison of deepseek-r1 and gpt-5.3-codex: benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. gpt-5.3-codex outperforms deepseek-r1 on 5 of 5 shared benchmarks.
deepseek-r1
Input / 1M
$4.00
Output / 1M
$4.00
Context
64K
Model ID
novita/deepseek/deepseek-r1
gpt-5.3-codex
Input / 1M
$1.75
Output / 1M
$14.00
Context
400K
Model ID
openai-responses/gpt-5.3-codex
Benchmark comparison
Intelligence Indexreasoning
deepseek-r113.9%
gpt-5.3-codex36.9%
Math Indexmath
deepseek-r176.0%
gpt-5.3-codexN/A
GPQA Diamondreasoning
deepseek-r181.3%
gpt-5.3-codex91.5%
AIME 2025math
deepseek-r176.0%
gpt-5.3-codexN/A
LiveCodeBenchcoding
deepseek-r177.0%
gpt-5.3-codexN/A
Terminal-Bench Hardagentic
deepseek-r115.9%
gpt-5.3-codex53.0%
τ²-Benchagentic
deepseek-r136.5%
gpt-5.3-codex86.0%
MMLU Proknowledge
deepseek-r184.9%
gpt-5.3-codexN/A
Humanity's Last Examreasoning
deepseek-r115.8%
gpt-5.3-codex42.5%
Scores sourced from official model cards, Artificial Analysis, and public leaderboards. Benchmarks measure specific skills and don't capture every aspect of model quality.
Pricing & specifications
| deepseek-r1 | gpt-5.3-codex | |
|---|---|---|
| Input price / 1M | $4.00 | $1.75 |
| Output price / 1M | $4.00 | $14.00 |
| Context window | 64K tokens | 400K tokens |
| Max output | N/A | 128K tokens |
| Vision input | N/A | Yes |
| Tool calling | Yes | Yes |
| Reasoning | N/A | Yes |
| Prompt caching | N/A | Yes |
| Computer use | N/A | N/A |
| Provider | Novita AI | OpenAI Responses |
Questions people ask
Is deepseek-r1 better than gpt-5.3-codex?
gpt-5.3-codex outperforms deepseek-r1 on 5 of 5 shared benchmarks. See the benchmark comparison above for specifics: deepseek-r1 and gpt-5.3-codex have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper, deepseek-r1 or gpt-5.3-codex?
deepseek-r1 is cheaper. deepseek-r1 costs $4.00/$4.00 per 1M input/output tokens, while gpt-5.3-codex costs $1.75/$14.00.
Can I use deepseek-r1 and gpt-5.3-codex through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch between "novita/deepseek/deepseek-r1" and "openai-responses/gpt-5.3-codex", no other code changes needed.
What are the context windows?
deepseek-r1 supports up to 64K tokens of context. gpt-5.3-codex supports up to 400K tokens. Longer context means you can feed larger documents or codebases in a single prompt, though quality often degrades past 128K for most models.
Switch between deepseek-r1 and gpt-5.3-codex with one line of code
Requesty provides a single OpenAI-compatible API for 600+ models. Change the model parameter, not your code.