Head-to-Head Model Comparison

o3-deep-research vs Llama 5

Benchmarks, API Token Pricing, Context Window & Speed Comparison

Reviewed by the GetInfoUs research teamLast reviewed: October 2026Editorial policy
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OpenAIMetareasoningopen-source

Compare o3-deep-research by OpenAI against Llama 5 by Meta across real-world coding, reasoning, token economics, and latency.

Head-to-Head Comparison

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OpenAI

o3-deep-research

Agentic Researcher

An agentic model for long-running research, synthesis and cited report generation.

Intelligence Index55 / 100
Input Token:

$10.00 / 1M

Output Token:

$40.00 / 1M

Context Window:

200K tokens

SWE-bench Verified:

55%

Meta

Llama 5

Recursive Self-Improvement

Meta's flagship open model featuring native agent training, recursive self-improvement, and 5M token context.

Intelligence Index94 / 100
Input Token:

$0.00 / 1M

Output Token:

$0.00 / 1M

Context Window:

5M tokens

SWE-bench Verified:

74%

Key Differences at a Glance

  • Llama 5 is 1.0x cheaper for API usage (input + output tokens combined).
  • Llama 5 has a larger context window (5M vs 200K tokens).
  • Llama 5 is faster at 65 tok/s vs 45 tok/s.
  • Llama 5 leads on SWE-bench coding (74.0% vs 55.0%).
Need definitions for token pricing, context, or benchmarks?Explore AI Glossary →
Featureo3-deep-researchLlama 5
Intelligence Index
Composite reasoning & knowledge score (0-100)
5594
Provider
OpenAIMeta
Input Price
Cost per million input tokens
$10.00 / 1M$0.00 / 1M
Output Price
Cost per million output tokens
$40.00 / 1M$0.00 / 1M
Blended Price
Weighted 7:2:1 cache:input:output per 1M
$7.75 / 1M$0.00 / 1M
Context Window
Maximum input + output tokens
200K tokens~300 A4 pages of text5M tokens~7,500 A4 pages of text
Max Output Tokens
Per single request
100K128K
Throughput Speed
Tokens generated per second
45 tok/s65 tok/s
SWE-bench Verified
Real-world software engineering
55%74%
GPQA Diamond
Graduate-level reasoning
74.5%84%
Cached Input Price
Prompt caching discount per 1M tokens
$2.50 / 1M$0.00 / 1M

Who Wins Where?

At-a-glance decision framework
Coding
Llama 5
+19.0% SWE-bench lead
Cost
Llama 5
1.0x cheaper monthly runtime
Speed
Llama 5
+44% faster generation
Context
Llama 5
5M tokens window

Empirical Head-to-Head Benchmark Scores

Official evaluation metrics verified by independent third-party research labs.

o3-deep-researchLlama 5
SWE-bench Verified (Autonomous Coding)

Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.

55%vs74%
GPQA Diamond (Doctorate-Level Science & Math)

Challenging questions created by domain experts to test complex PhD-level reasoning.

74.5%vs84%
MMLU-Pro (Multi-task Language Understanding)

Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.

85.5%vs87%
LMSYS Chatbot Arena Elo

Crowdsourced human preference evaluation based on blind, head-to-head model battles.

1336ptsvs1485pts
Humanity's Last Exam (Frontier Expert Knowledge)

Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.

13.2%vsN/A
Terminal-Bench (Agentic Coding & Terminal Use)

Autonomous multi-step tasks executed inside a real command-line terminal environment.

41%vsN/A
SciCode (Scientific Computing)

Research-grade coding problems drawn from real scientific and numerical workloads.

43%vsN/A
LiveCodeBench (Competitive Coding)

Contamination-free competitive programming problems collected continuously over time.

68%vs68%
AIME (Advanced Math Competition)

American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.

87.5%vs88%
Long-Context Reasoning

Accuracy when reasoning over very large inputs that fill the model context window.

82%vsN/A
Generation Speed (Throughput)

Tokens emitted per second during active generation streaming.

45 tok/s vs65 tok/s

Latency & Response Time

Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.

Time to First Token (TTFT)Lower is better
o3-deep-research3.40s
Llama 50.85s
Est. End-to-End Response (500 tokens)TTFT + generation time
o3-deep-research14.51s
Llama 58.54s

Real-Time Interactive Token Cost Simulator

Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.

100K / day
10K500K1M
30K / day
5K150K300K
50% cached
0% (Cold)50%90% (Warm)
o3-deep-research Monthly API Bill
$54.75 / month
$10/1M in · $40/1M out
Llama 5 Monthly API Bill
$0.00 / month
$0/1M in · $0/1M out
Llama 5 saves approximately $54.75 / month (100%) under this workload.1.0x Savings

o3-deep-research · Strengths & Key Advantages

  • Runs autonomous multi-step research with citations
  • Synthesises large evidence sets into structured reports
  • Deep integration with web search and file retrieval
  • Produces well-structured, fully cited research reports
Considerations & Trade-offs
  • Slow and expensive per run
  • Overkill for anything that is not a genuine research task

Llama 5 · Strengths & Key Advantages

  • 5 Million token context with native multi-audio/video understanding
  • Recursive self-improvement training loop
  • Completely open weights with enterprise commercial license
Considerations & Trade-offs
  • Complex MoE serving requirements
  • 4B tokenizer changes require updating legacy fine-tuning harnesses

Token Use & Task Economics

Estimated cost and token consumption to complete one representative agentic task.

Metrico3-deep-researchLlama 5
Cost per Task
Estimated USD to finish one task
$7.28$0.00
Output Tokens / Task
Tokens generated per task
90K40K
Reasoning Tokens / Task
Thinking tokens burned per task
42K20K

Technical Specifications

Architecture, release timeline, capabilities, and modalities.

Featureo3-deep-researchLlama 5
Official API Model ID (SDK)o3-deep-researchmeta-llama/Llama-5
API ProtocolOpenAI Responses API & Chat Completions v1OpenAI-Compatible REST / vLLM / SGLang / HuggingFace TGI
Release Date2025-062026-04
Knowledge CutoffJune 2024January 2026
ArchitectureAgentic reasoning transformer with web and file toolsMixture-of-Experts with recursive self-improvement (~600B total, 40-80B active)
ParametersConfidential600B+ total (~40-80B active)
Enterprise Rate Limits (RPM / TPM)10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPMUnlimited (Hardware-bound on self-hosted GPU) / 10,000 RPM Cloud · Unlimited local throughput / 10M+ TPM Managed Cloud
Long-Context Tier (>128K/200K)Flat rate ($10/1M in) across full 200K windowFree across full context window (only KV-cache VRAM scales)
Prompt Cache Policy & TTLAutomatic prefix caching at $2.5/1M (no extra cache-write fee)Automatic prefix KV-caching in vLLM / SGLang (0 cost)
Computer Use / GUI AgentSupported (Screen coordinate grounding, browser & desktop GUI action loops)Supported (Screen coordinate grounding, browser & desktop GUI action loops)
MCP & Parallel Tool CallingNative MCP Client/Server ready · Parallel function calling · 100% Strict JSON SchemaNative MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema
Web Search Grounding & SandboxNative Web Search tool + Hosted Code Interpreter & File Search RAGSupported via external Tavily/Exa Search & E2B/Docker Sandbox tools
Official Fine-Tuning SupportSupervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT)Full Weights SFT, LoRA, QLoRA, DPO & GRPO RL (Unsloth / Axolotl / Llama-Factory)
Multimodal Token BillingText BPE (~4 chars/token) · Vision (~258–765 tokens per image tile)Text BPE (~4 chars/token) · Vision (~258–765 tokens per image tile) · Audio (~25–32 tokens/sec) · Video (~258–300 tokens/sec)
Quantization & Min GPU VRAMCloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API)BF16 / FP16, FP8 Dynamic, INT4 AWQ / GPTQ, GGUF (Q4_K_M / Q8_0) · 372 GB VRAM (4-bit Quantized) · 1290 GB VRAM (Native BF16)
Safety & Frontier ClassificationOpenAI Preparedness Framework Audited & System Card PublishedOpen-Weights System Card + Customizable Guardrail Layer (Llama Guard / ShieldGemma)
Enterprise Compliance (ZDR/HIPAA/SOC2)SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier100% Air-Gapped On-Premises / Private VPC · Full HIPAA, GDPR & SOC2 Control
Input Modalitiestext, visiontext, vision, video, audio
Output Modalitiestexttext

o3-deep-research vs Llama 5: Quick Answers

Which is more intelligent, o3-deep-research or Llama 5?

Llama 5 is more intelligent. It scores 94 compared with 55 on the composite Intelligence Index.

Which model is faster?

Llama 5 is faster, generating 65 tokens per second compared with 45 tokens per second.

Which model is cheaper to run?

Llama 5 is cheaper at $0.00 per 1M tokens blended, compared with $7.75 (7:2:1 cache:input:output ratio).

Which model has lower latency?

Llama 5 has lower latency, with a time to first token of 0.85s compared with 3.40s.

Which model has a larger context window?

Llama 5 has a larger context window, supporting 5M tokens compared with 200K tokens.

Verdict

Choose o3-deep-research for automated literature review, market research and cited report drafting, or choose Llama 5 for autonomous open-source multi-agent systems, deep software refactoring, and frontier research.

Frequently asked questions

Which is cheaper: o3-deep-research or Llama 5?+

o3-deep-research costs $10/1M input and $40/1M output tokens, while Llama 5 costs $0/1M input and $0/1M output tokens.

Which model has a larger context window: o3-deep-research or Llama 5?+

o3-deep-research supports 200K tokens whereas Llama 5 supports 5M tokens.

AI Terminology & Guide
Explore Glossary →

Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.

Benchmark scores, token prices, and rate limits evolve rapidly as AI labs release model updates. Always verify current specifications and pricing on the official provider documentation.

Sources: OpenAI & Meta Official Documentation