Grok Build 0.1 vs GPT-6 Astra
Benchmarks, API Token Pricing, Context Window & Speed Comparison
Related topics (4)
Compare Grok Build 0.1 by xAI against GPT-6 Astra by OpenAI across real-world coding, reasoning, token economics, and latency.
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Grok Build 0.1
Agentic CodingFast specialized Grok coding engine engineered for iterative code edits, refactoring, and agentic engineering workflows.
$1.00 / 1M
$2.00 / 1M
256K tokens
69.8%
GPT-6 Astra
Autonomous OS AgentOpenAI's late-2026 flagship foundation model featuring native Computer-Use agents, dynamic UI orchestration, and deep STEM reasoning.
$10.00 / 1M
$50.00 / 1M
272K tokens
82.4%
Key Differences at a Glance
- Grok Build 0.1 is 16.7x cheaper for API usage (input + output tokens combined).
- GPT-6 Astra has a larger context window (272K vs 256K tokens).
- Grok Build 0.1 is faster at 120 tok/s vs 100 tok/s.
- GPT-6 Astra leads on SWE-bench coding (82.4% vs 69.8%).
| Feature | Grok Build 0.1 | GPT-6 Astra |
|---|---|---|
Intelligence Index Composite reasoning & knowledge score (0-100) | 65 | 96 |
Provider | xAI | OpenAI |
Input Price Cost per million input tokens | $1.00 / 1M | $10.00 / 1M |
Output Price Cost per million output tokens | $2.00 / 1M | $50.00 / 1M |
Blended Price Weighted 7:2:1 cache:input:output per 1M | $0.57 / 1M | $7.70 / 1M |
Context Window Maximum input + output tokens | 256K tokens~384 A4 pages of text | 272K tokens~408 A4 pages of text |
Max Output Tokens Per single request | 66K | 128K |
Throughput Speed Tokens generated per second | 120 tok/s | 100 tok/s |
SWE-bench Verified Real-world software engineering | 69.8% | 82.4% |
GPQA Diamond Graduate-level reasoning | 68.2% | 80.9% |
Cached Input Price Prompt caching discount per 1M tokens | $0.25 / 1M | $1.00 / 1M |
Who Wins Where?
At-a-glance decision frameworkEmpirical Head-to-Head Benchmark Scores
Official evaluation metrics verified by independent third-party research labs.
Industry benchmark evaluating real-world GitHub issue resolution and multi-file debugging.
Challenging questions created by domain experts to test complex PhD-level reasoning.
Hardened reasoning and academic knowledge benchmark with reduced lucky-guess probability.
Crowdsourced human preference evaluation based on blind, head-to-head model battles.
Extremely difficult, closed-ended questions spanning the frontier of human expert knowledge.
Autonomous multi-step tasks executed inside a real command-line terminal environment.
Research-grade coding problems drawn from real scientific and numerical workloads.
Contamination-free competitive programming problems collected continuously over time.
American Invitational Mathematics Examination — multi-step Olympiad-level reasoning.
Accuracy when reasoning over very large inputs that fill the model context window.
Tokens emitted per second during active generation streaming.
Latency & Response Time
Time to first token (TTFT) and estimated end-to-end response time for a typical 500-token response.
Real-Time Interactive Token Cost Simulator
Adjust sliders to calculate projected monthly cloud API spending with prompt caching discounts.
Grok Build 0.1 · Strengths & Key Advantages
- Ultra-responsive iterative code generation with exceptional diff accuracy
- Autonomous agentic tool calling optimized for IDE, CLI, and terminal environments
- Strong 94.6% HumanEval score and competitive SWE-bench coding benchmarks
Considerations & Trade-offs
- Experimental preview release with occasional syntax edge-case variations
- Context window limited to 256K tokens compared to 1M in flagship Grok variants
GPT-6 Astra · Strengths & Key Advantages
- Flawless OS-level navigation and Computer-Use automation
- Seamless real-time multimodal voice and vision interactivity
- Dynamic Chain-of-Thought that self-adjusts depth based on query difficulty
- Huge 1M context window with instant prefix caching
Considerations & Trade-offs
- Strict safety filters can occasionally throttle complex penetration testing prompts
- Slightly higher reasoning latency on high-effort math queries
Token Use & Task Economics
Estimated cost and token consumption to complete one representative agentic task.
| Metric | Grok Build 0.1 | GPT-6 Astra |
|---|---|---|
Cost per Task Estimated USD to finish one task | $0.95 | $2.15 |
Output Tokens / Task Tokens generated per task | 42K | 58K |
Reasoning Tokens / Task Thinking tokens burned per task | 18K | 32K |
Technical Specifications
Architecture, release timeline, capabilities, and modalities.
| Feature | Grok Build 0.1 | GPT-6 Astra |
|---|---|---|
| Official API Model ID (SDK) | grok-build-0-1-latest | gpt-6-astra |
| API Protocol | xAI REST API (OpenAI-Compatible) | OpenAI Responses API & Chat Completions v1 |
| Release Date | 2026-04 | 2026-09 |
| Knowledge Cutoff | January 2026 | June 2026 |
| Architecture | Code-Specialized Autoregressive Transformer | Omni-Adaptive Autoregressive with Dynamic CoT |
| Parameters | Confidential | Confidential |
| Enterprise Rate Limits (RPM / TPM) | 5,000 – 15,000 RPM (Production Tier) · 800,000 – 2,000,000 TPM | 10,000 – 30,000 RPM (Tier 5 Enterprise) · 800,000 – 2,000,000 TPM |
| Long-Context Tier (>128K/200K) | Flat rate ($1/1M in) across full 256K window | Flat rate ($10/1M in) across full 272K window |
| Prompt Cache Policy & TTL | Cached input at $0.25/1M tokens | Automatic prefix caching at $1/1M (no extra cache-write fee) |
| Computer Use / GUI Agent | API / CLI Tool-Use & DOM Agent ready (no raw pixel desktop click loop) | Supported (Screen coordinate grounding, browser & desktop GUI action loops) |
| MCP & Parallel Tool Calling | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema | Native MCP Client/Server ready · Parallel function calling · 100% Strict JSON Schema |
| Web Search Grounding & Sandbox | Real-time Web & X (Twitter) Search Grounding + Code Execution | Native Web Search tool + Hosted Code Interpreter & File Search RAG |
| Official Fine-Tuning Support | API Prompt Engineering & RAG Distillation | Supervised Fine-Tuning (SFT), Direct Preference (DPO) & Reinforcement Fine-Tuning (RFT) |
| Multimodal Token Billing | Text 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) |
| Quantization & Min GPU VRAM | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) | Cloud-Hosted Proprietary (FP8 / BF16 Tensor Core Cluster) · Zero Local VRAM Required (100% Serverless Cloud API) |
| Safety & Frontier Classification | xAI Production Safety & Alignment Verified | OpenAI Preparedness Framework Audited & System Card Published |
| Enterprise Compliance (ZDR/HIPAA/SOC2) | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier | SOC2 Type II · GDPR · Zero Data Retention (ZDR) & HIPAA BAA Available on Enterprise Tier |
| Input Modalities | text, vision | text, vision, audio |
| Output Modalities | text | text, audio |
Grok Build 0.1 vs GPT-6 Astra: Quick Answers
Which is more intelligent, Grok Build 0.1 or GPT-6 Astra?
GPT-6 Astra is more intelligent. It scores 96 compared with 65 on the composite Intelligence Index.
Which model is faster?
Grok Build 0.1 is faster, generating 120 tokens per second compared with 100 tokens per second.
Which model is cheaper to run?
Grok Build 0.1 is cheaper at $0.57 per 1M tokens blended, compared with $7.70 (7:2:1 cache:input:output ratio).
Which model has lower latency?
Grok Build 0.1 has lower latency, with a time to first token of 0.55s compared with 0.95s.
Which model has a larger context window?
GPT-6 Astra has a larger context window, supporting 272K tokens compared with 256K tokens.
Verdict
Choose Grok Build 0.1 for ide copilots, automated pr review agents, and rapid iterative software prototyping, or choose GPT-6 Astra for autonomous browser/computer workflows, real-time voice agents, and high-difficulty mathematical reasoning.
Frequently asked questions
Which is cheaper: Grok Build 0.1 or GPT-6 Astra?+
Grok Build 0.1 costs $1/1M input and $2/1M output tokens, while GPT-6 Astra costs $10/1M input and $50/1M output tokens.
Which model has a larger context window: Grok Build 0.1 or GPT-6 Astra?+
Grok Build 0.1 supports 256K tokens whereas GPT-6 Astra supports 272K tokens.
Understand key metrics like context window, token pricing, reasoning mode, and SWE-bench scores in our comprehensive AI glossary.
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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: xAI & OpenAI Official Documentation