GPT-5.3 Codex API Benchmarks, Pricing & Provider Data
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GPT-5.3 Codex benchmark, API pricing, and provider data cover 667 API providers, with prices starting at $0.0068/request. GPT-5.3 Codex free API options are available from 6 providers. The page also shows measured API speed and first-token latency.
OpenAI GPT-5.3 Codex is a code-specialized variant in the GPT-5 series, optimized for code generation, debugging, and software development tasks.
Category Performance
Observed-capability estimates with uncertainty reported separately from independent benchmark families.
- Coverage
- 5 / 8
- Methodology
- V3.0
#1Reasoning59.7Estimated2/4 Measured dimensions
#2Coding58.3RatedGlobal rank #93/4 Measured dimensions
#3Instruction following54.4Provisional1/4 Measured dimensions
#3Knowledge54.4Provisional1/4 Measured dimensions
#5Agents52.7RatedGlobal rank #284/4 Measured dimensions
Specifications
Input and output token limits for this model, plus how it ranks on long-context understanding.
Features
Rankings
Excels at
It's decent at
Falls behind in
Detailed scores
Updated: Aug 29, 2026Overall
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Overall score64.0#28 / 100
Overall
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Speed & latency
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Output speed125.8 tok/s#24 / 76Time to first token36.99 s#73 / 76
Speed & latency
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Pricing
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Input price$1.75/M#136 / 180Output price$14.00/M#152 / 180
Pricing
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Agents
V3.0undefined metric} other undefined metrics}} · Rated
Score52.7#2880% interval46.1–59.34/4 Measured dimensionsAgentic score63.7#33 / 69Terminal-Bench 2.077.3#11 / 53
Agents
V3.0undefined metric} other undefined metrics}} · Rated
Coding
V3.0undefined metric} other undefined metrics}} · Rated
Score58.3#980% interval49.8–66.93/4 Measured dimensionsSciCode53.2%#17 / 205Coding score62.5#14 / 81
Coding
V3.0undefined metric} other undefined metrics}} · Rated
Reasoning
V3.0undefined metric} other undefined metrics}} · Estimated
Score59.780% interval48.9–70.42/4 Measured dimensionsGPQA91.5%#19 / 212HLE42.5%#19 / 209
Reasoning
V3.0undefined metric} other undefined metrics}} · Estimated
Knowledge
V3.0undefined metric} other undefined metrics}} · Provisional
Score54.480% interval38.4–70.41/4 Measured dimensionsArtificial Analysis Intelligence Index45.5#25 / 111AA-GPQA Diamond91.5#19 / 108
Knowledge
V3.0undefined metric} other undefined metrics}} · Provisional
Math
V3.0undefined metric} other undefined metrics}} · No data
No data80% interval30.8–69.20/4 Measured dimensions
Math
V3.0undefined metric} other undefined metrics}} · No data
Multilingual
V3.0undefined metric} other undefined metrics}} · No data
No data80% interval30.8–69.20/4 Measured dimensions
Multilingual
V3.0undefined metric} other undefined metrics}} · No data
Multimodal
V3.0undefined metric} other undefined metrics}} · No data
80% interval30.8–69.20/4 Measured dimensionsAA-MMMU-Pro78.5#20 / 65Design Arena Website1174.0#56 / 75
Multimodal
V3.0undefined metric} other undefined metrics}} · No data
Instruction following
V3.0undefined metric} other undefined metrics}} · Provisional
Score54.480% interval38.4–70.41/4 Measured dimensionsAA-IFBench75.4#19 / 84
Instruction following
V3.0undefined metric} other undefined metrics}} · Provisional
OpenRouter endpoints
3 endpointsThird-party OpenRouter endpoint data, shown separately from LMSpeed measurements. Some 30-minute live performance fields only appear after syncing with an OpenRouter API key.
| Provider endpoint | Input | Output | 1d uptime | 30m latency | 30m throughput | Context / output |
|---|---|---|---|---|---|---|
Azure azure | $1.75/M | $14/M | 100% | — | — | undefined tokens / undefined tokens |
OpenAI openai/fast | $3.50/M | $28/M | 100% | — | — | undefined tokens / undefined tokens |
OpenAI openai | $1.75/M | $14/M | 99.7% | — | — | undefined tokens / undefined tokens |
Pricing Comparison
Compare GPT-5.3 Codex API pricing across 661 providers. Prices range from $0.0068/request to $17482.50/M. KFCV50 offers the lowest rate at $0.0068/request. 6 providers offer free API credits or a free tier.
| Provider | Health | Model Variant | Group | Input ($/M) | Output ($/M) | Speed (t/s) | First token | Audit |
|---|---|---|---|---|---|---|---|---|
L1 100% | gpt-5.3-codex-spark | default | $0.365/request | - | 242.3 t/s+93% | 2.95 s-92% | — | |
L1 100% L2 0% | gpt-5.3-codex | gptpro | -96%$0.068/M | -96%$0.548/M | 56.1 t/s | 4.62 s-88% | — | |
L1 99% | gpt-5.3-codex | OpenAI-官key | $2.27/M Cache read$0.228/MCache write$2.84/MCache write 1h$4.55/M | $18.20/M | 21.1 t/s | 2.44 s-93% | — | |
L1 100% | gpt-5.3-codex | azure-officially | -29%$1.25/M Cache read$0.125/M | -29%$10.00/M | — | — | — | |
L1 100% | gpt-5.3-codex | default | -93%$0.120/M Cache read$0.012/M | -93%$0.959/M | — | — | — | |
L1 100% | gpt-5.3-codex-spark | default | -93%$0.120/M | -93%$0.959/M | — | — | — | |
L1 100% | gpt-5.3-codex | default | $0.014/request | - | — | — | — | |
L1 100% | gpt-5.3-codex-high | default | $0.014/request | - | — | — | — | |
L1 100% | gpt-5.3-codex-low | default | $0.014/request | - | — | — | — | |
L1 100% | gpt-5.3-codex-medium | default | $0.014/request | - | — | — | — | |
L1 100% | gpt-5.3-codex-xhigh | default | $0.021/request | - | — | — | — | |
L1 100% | gpt-5.3-codex-2026-02-24 | default | -86%$0.240/M | -86%$1.92/M | — | — | — | |
L1 100% | gpt-5.3-codex-openai-compact | default | -86%$0.240/M | -86%$1.92/M | — | — | — | |
L1 100% | gpt-5.3-codex-spark | default | -86%$0.240/M | -86%$1.92/M | — | — | — | |
L1 100% | gpt-5.3-codex-spark | codex | -71%$0.503/M Cache read$0.050/M | -71%$4.03/M | — | — | — | |
兔子API Free | L1 100% | gpt-5.3-codex | Codex | Free | Free | — | — | — |
L1 100% | gpt-5.3-codex-spark | Codex | Free | Free | — | — | — | |
L1 100% | gpt-5.3-codex-spark | default | -86%$0.240/M Cache read$0.024/M | -86%$1.92/M | — | — | — | |
L1 100% | gpt-5.3-codex | default | -97%$0.059/M Cache read$0.0059/M | -97%$0.470/M | — | — | — | |
L1 100% | gpt-5.3-codex-spark | default | -97%$0.059/M Cache read$0.0059/M | -97%$0.470/M | — | — | — |
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Frequently Asked Questions
- What benchmark data does GPT-5.3 Codex include?
- LMSpeed shows GPT-5.3 Codex benchmark context, API price, output speed, first-token latency, and provider data across 667 providers when those signals are available.
- What is the GPT-5.3 Codex API price?
- GPT-5.3 Codex has pricing from 667 providers, ranging from $0.0068/request to $17482.50/M. KFCV50 has the lowest listed price.
- What does the GPT-5.3 Codex API pricing table include?
- The GPT-5.3 Codex API pricing table compares 667 providers by input price, output price, free tier status, speed, first-token latency, and recent health data when available.
- Which provider has the cheapest GPT-5.3 Codex API pricing?
- KFCV50 currently has the lowest listed GPT-5.3 Codex price at $0.0068/request across 667 providers.
- Can I compare GPT-5.3 Codex API price and speed together?
- Yes. LMSpeed shows GPT-5.3 Codex API price, output speed, first-token latency, and provider health on the same page so you can compare cost and performance together.
- Is GPT-5.3 Codex API free?
- Yes, GPT-5.3 Codex free API options are available through 6 providerundefined other undefined} on LMSpeed, including 兔子API, 兔子API, 兔子API, 兔子API, Moyanjdc API. These providers offer free API credits or a free tier with no per-token charges.
- Where can I get GPT-5.3 Codex free API access?
- LMSpeed currently lists 6 free API providerundefined other undefined} for GPT-5.3 Codex: 兔子API, 兔子API, 兔子API, 兔子API, Moyanjdc API. Check each provider row before using it because free tier limits can change.