OpenAI
·Released on Nov 13, 2025GPT-5.1 API Benchmarks, Pricing & Provider Data
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LLM
GPT-5.1 benchmark, API pricing, and provider data cover undefined API provider} other undefined API providers}}, with prices starting at $0.0014/request. GPT-5.1 free API options are available from undefined provider} other undefined providers}}. The page also shows measured API speed and first-token latency.
OpenAI GPT-5.1 is a GPT-5 series model focused on improved reasoning depth, tool use, and reliable long-form generation for production AI applications.
Quality
#32of 112
66.0
LMSpeed score
Speed
142char/s
2.78 s
Cost
#123of 186
$0.0014/ 1M · 8:1 in:out
$0.0002 in · $0.0012 out
Category Performance
Observed-capability estimates with uncertainty reported separately from independent benchmark families.
- Coverage
- 7 / 8
- Methodology
- V3.0
#1Reasoning53.8RatedGlobal rank #243/4 Measured dimensions
80% interval: 45.2–62.5
abstract logicPrior only
scientific causal47
critpt · critpt / gpqa · gpqa / hle · hle
multistep constraints58.4
mmlu_pro · mmlu_pro
evidence verification56
lcr · lcr
#2Instruction following53.6Provisional1/4 Measured dimensions
80% interval: 37.6–69.6
constraint followingPrior only
structured outputPrior only
novel instruction generalization53.6
ifbench · aa_if_bench
long multiturn instructionPrior only
#3Math53.4Provisional1/4 Measured dimensions
80% interval: 37.3–69.4
foundational mathPrior only
competition mathPrior only
proof frontier53.4
frontiermath · frontier_math_v2_tier4 / frontiermath · frontier_math_v2_tiers13
applied tool mathPrior only
#4Knowledge51.4Provisional1/4 Measured dimensions
80% interval: 37.4–65.4
broad knowledge51.4
aa_omniscience · aa_omniscience_index / benchlm_category_knowledge · benchlm_category_knowledge
professional knowledgePrior only
factualityPrior only
retrieval open bookPrior only
#5Coding49.6Estimated2/4 Measured dimensions
80% interval: 38.4–60.7
code generation49.5
livecodebench · livecodebench / scicode · aa_sci_code
repository engineering49.7
vibecode · vibe_code_bench
debugging testingPrior only
tooling qualityPrior only
#6Multimodal48.8Provisional1/4 Measured dimensions
80% interval: 32.4–65.1
perception ocrPrior only
document spatialPrior only
visual reasoning48.8
benchlm_category_multimodal · benchlm_category_multimodal_grounded
video actionPrior only
#7Agents47.3Estimated3/4 Measured dimensions
80% interval: 38.1–56.6
planning46
deep_planning · gert_labs
tool use49.5
tau · tau2_bench
environment execution46.6
gdpval_aa · benchlm_agentic_gdpval_aa
recovery reliabilityPrior only
No data:Multilingual
Specifications
Input and output token limits for this model, plus how it ranks on long-context understanding.
INPUT
400Ktokens
≈ 480 pages of text
OUTPUT
128Ktokens
8K128K1M4M
400K
Features
Rankings
Excels at
It's decent at
Falls behind in
Detailed scores
Updated: Sep 13, 2026Overall
undefined metric} other undefined metrics}}
Overall score66.0#32 / 112
Overall
undefined metric} other undefined metrics}}
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Pricing
undefined metric} other undefined metrics}}
Input price$1.25/M#123 / 186Output price$10.00/M#142 / 186
Pricing
undefined metric} other undefined metrics}}
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Agents
V3.0undefined metric} other undefined metrics}} · Estimated
Score47.380% interval38.1–56.63/4 Measured dimensionsAA Agentic Index21.6#45 / 70Τ²-bench results81.9#53 / 82
Agents
V3.0undefined metric} other undefined metrics}} · Estimated
Dimensions and evidence
Planning & decomposition46
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
deep_planning · gert_labs · z -0.52 · q 1.00
Tool use49.5
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
tau · tau2_bench · z -0.17 · q 1.00
Environment & long-horizon execution46.6
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
gdpval_aa · benchlm_agentic_gdpval_aa · z -0.59 · q 1.00
Recovery & completion reliabilityPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Coding
V3.0undefined metric} other undefined metrics}} · Estimated
Score49.680% interval38.4–60.72/4 Measured dimensionsLiveCodeBench86.8%#4 / 115AA-SciCode43.3#60 / 113
Coding
V3.0undefined metric} other undefined metrics}} · Estimated
Dimensions and evidence
Code generation49.5
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
livecodebench · livecodebench · z 0.03 · q 1.00
scicode · aa_sci_code · z 0.00 · q 1.00
Repository engineering49.7
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
vibecode · vibe_code_bench · z -0.02 · q 1.00
Debugging & testingPrior only
Tool-assisted development & qualityPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
LiveCodeBenchV3 evidence
LMSpeed rank#4
Score86.8%
Sourceartificialanalysis.ai
UpdatedSep 13, 2026
Confidence4
Reasoning
V3.0undefined metric} other undefined metrics}} · Rated
Score53.8#2480% interval45.2–62.53/4 Measured dimensionsMMLU-Pro80.1%#62 / 129GPQA87.3%#52 / 218
Reasoning
V3.0undefined metric} other undefined metrics}} · Rated
Dimensions and evidence
Abstract logicPrior only
Scientific & causal reasoning47
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
critpt · critpt · z 0.18 · q 1.00
gpqa · gpqa · z -0.63 · q 1.00
hle · hle · z -0.73 · q 1.00
Multi-step constraints58.4
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
mmlu_pro · mmlu_pro · z 0.92 · q 1.00
Evidence integration & verification56
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
lcr · lcr · z 0.45 · q 1.00
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
MMLU-ProV3 evidence
LMSpeed rank#62
Score80.1%
Sourceartificialanalysis.ai
UpdatedSep 13, 2026
Confidence4
Knowledge
V3.0undefined metric} other undefined metrics}} · Provisional
Score51.480% interval37.4–65.41/4 Measured dimensionsArtificial Analysis Intelligence Index24.7#67 / 117AA-GPQA Diamond87.3#48 / 113
Knowledge
V3.0undefined metric} other undefined metrics}} · Provisional
Dimensions and evidence
Broad knowledge51.4
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
aa_omniscience · aa_omniscience_index · z 0.30 · q 1.00
benchlm_category_knowledge · benchlm_category_knowledge · z -0.36 · q 1.00
Professional knowledgePrior only
FactualityPrior only
Retrieval & open-book usePrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Artificial Analysis Intelligence IndexV3 evidence
LMSpeed rank#67
Score24.7
Sourcebenchlm.ai
UpdatedSep 13, 2026
Confidence2
AA-Omniscience IndexV3 evidence
LMSpeed rank#29
Score5.4
Sourcebenchlm.ai
UpdatedSep 13, 2026
Confidence2
AA-Omniscience Hallucination Rate
LMSpeed rank#74
Score51.9
Sourcebenchlm.ai
UpdatedSep 13, 2026
Confidence2
Math
V3.0undefined metric} other undefined metrics}} · Provisional
Score53.480% interval37.3–69.41/4 Measured dimensionsMath score49.2#37 / 63FrontierMath v2 (Tiers 1-3)31.0#19 / 47
Math
V3.0undefined metric} other undefined metrics}} · Provisional
Dimensions and evidence
Foundational mathPrior only
Competition mathPrior only
Advanced proofs53.4
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
frontiermath · frontier_math_v2_tier4 · z 0.40 · q 1.00
frontiermath · frontier_math_v2_tiers13 · z 0.21 · q 1.00
Applied & tool-assisted mathPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
FrontierMath v2 (Tiers 1-3)V3 evidence
LMSpeed rank#19
Score31.0
Sourcebenchlm.ai
UpdatedSep 13, 2026
Confidence2
FrontierMath v2 (Tier 4)V3 evidence
LMSpeed rank#17
Score12.5
Sourcebenchlm.ai
UpdatedSep 13, 2026
Confidence2
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
Dimensions and evidence
Cross-language understandingPrior only
Multilingual generationPrior only
Reasoning transferPrior only
Low-resource robustnessPrior only
Multimodal
V3.0undefined metric} other undefined metrics}} · Provisional
Score48.880% interval32.4–65.11/4 Measured dimensionsAA-MMMU-Pro75.5#30 / 68Design Arena Website1199.0#51 / 78
Multimodal
V3.0undefined metric} other undefined metrics}} · Provisional
Dimensions and evidence
Perception & OCRPrior only
Document & spatial understandingPrior only
Visual reasoning48.8
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
benchlm_category_multimodal · benchlm_category_multimodal_grounded · z 0.12 · q 1.00
Video & grounded actionPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
Multimodal Grounded scoreV3 evidence
LMSpeed rank#25
Score71.2
Sourcebenchlm.ai
UpdatedSep 13, 2026
Confidence2
Instruction following
V3.0undefined metric} other undefined metrics}} · Provisional
Score53.680% interval37.6–69.61/4 Measured dimensionsAA-IFBench72.9#26 / 84Instruction Following score89.3#20 / 52
Instruction following
V3.0undefined metric} other undefined metrics}} · Provisional
Dimensions and evidence
Constraint followingPrior only
Structured outputPrior only
Novel-instruction generalization53.6
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
ifbench · aa_if_bench · z 0.19 · q 1.00
Multi-turn & long instructionsPrior only
Benchmark
LMSpeed rank
Score
Source
Updated
Confidence
OpenRouter endpoints
5 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 |
|---|---|---|---|---|---|---|
OpenAI openai/fast | $2.50/M | $20/M | 100% | — | — | undefined tokens / undefined tokens |
Azure azure | $1.25/M | $10/M | 100.0% | — | — | undefined tokens / undefined tokens |
OpenAI openai | $1.25/M | $10/M | 100.0% | — | — | undefined tokens / undefined tokens |
OpenAI openai/flex | $0.625/M | $5/M | 100.0% | — | — | undefined tokens / undefined tokens |
Azure azure/swedencentral | $1.38/M | $11/M | — | — | — | undefined tokens / undefined tokens |
Pricing Comparison
Compare GPT-5.1 API pricing across 714 providers. Prices range from $0.0014/request to $75.00/M. Yun API offers the lowest rate at $0.0014/request. 12 providers offer free API credits or a free tier.
| Provider | Health | Model Variant | Group | Input ($/M) | Output ($/M) | Speed (t/s) | First token | Audit |
|---|---|---|---|---|---|---|---|---|
L1 100% | gpt-5.1 | Codex-Gpt-1 | -99%$0.014/M Cache read$0.0014/M | -99%$0.109/M | 95.9 t/s | 1.86 s | — | |
L1 100% | gpt-5.1-2025-11-13 | Azure-Gpt-1 | -99%$0.016/M Cache read$0.0016/M | -99%$0.131/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | Azure-Gpt-2 | -97%$0.038/M Cache read$0.0038/M | -97%$0.305/M | — | — | — | |
L1 100% | gpt-5.1-chat | Azure-Gpt-4 | -93%$0.082/M Cache read$0.0082/M | -93%$0.654/M | — | — | — | |
L1 100% | gpt-5.1-all | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1 | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1 | default | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-chat | default | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | default | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1 | default | $0.014/request | - | — | — | — | |
L1 100% | gpt-5.1-high | CodeX_05_token | $0.0068/request | - | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat-2025-11-13 | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-low | CodeX_05_token | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-medium | CodeX_05_token | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-all | default | -86%$0.171/M Cache read$0.017/M | -86%$1.37/M | — | — | — |
Showing 20 model IDs of 198.
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Frequently Asked Questions
- What benchmark data does GPT-5.1 include?
- LMSpeed shows GPT-5.1 benchmark context, API price, output speed, first-token latency, and provider data across 726 providers when those signals are available.
- What is the GPT-5.1 API price?
- GPT-5.1 has pricing from undefined provider} other undefined providers}}, ranging from $0.0014/request to $75.00/M. Yun API has the lowest listed price.
- What does the GPT-5.1 API pricing table include?
- The GPT-5.1 API pricing table compares 726 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-5.1 API pricing?
- Yun API currently has the lowest listed GPT-5.1 price at $0.0014/request across undefined provider} other undefined providers}}.
- Can I compare GPT-5.1 API price and speed together?
- Yes. LMSpeed shows GPT-5.1 API price, output speed, first-token latency, and provider health on the same page so you can compare cost and performance together.
- Is GPT-5.1 API free?
- Yes, GPT-5.1 free API options are available through 12 providerundefined other undefined} on LMSpeed, including 兔子API, 兔子API, 兔子API, 兔子API, 兔子API. These providers offer free API credits or a free tier with no per-token charges.
- Where can I get GPT-5.1 free API access?
- LMSpeed currently lists 12 free API providerundefined other undefined} for GPT-5.1: 兔子API, 兔子API, 兔子API, 兔子API, 兔子API. Check each provider row before using it because free tier limits can change.