| Signal | GPT-5.2-Codex | Delta | Grok Code Fast 1 |
|---|---|---|---|
Capabilities | 100 | +17 | |
Pricing | 14 | +13 | |
Context window size | 89 | +3 | |
Recency | 100 | +4 | |
Output Capacity | 85 | +18 | |
| Overall Result | 5 wins | of 5 | 0 wins |
30
days ranked higher
0
days
0
days ranked higher
OpenAI
xAI
Grok Code Fast 1 saves you $780.00/month
That's $9360.00/year compared to GPT-5.2-Codex at your current usage level of 100K calls/month.
| Metric | GPT-5.2-Codex | Grok Code Fast 1 | Winner |
|---|---|---|---|
| Overall Score | 96 | 84 | GPT-5.2-Codex |
| Rank | #9 | #60 | GPT-5.2-Codex |
| Quality Rank | #9 | #60 | GPT-5.2-Codex |
| Adoption Rank | #9 | #60 | GPT-5.2-Codex |
| Parameters | -- | -- | -- |
| Context Window | 400K | 256K | GPT-5.2-Codex |
| Pricing | $1.75/$14.00/M | $0.20/$1.50/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 83 | GPT-5.2-Codex |
| Pricing | 14 | 2 | GPT-5.2-Codex |
| Context window size | 89 | 86 | GPT-5.2-Codex |
| Recency | 100 | 96 | GPT-5.2-Codex |
| Output Capacity | 85 | 67 | GPT-5.2-Codex |
Our composite score (0–100) combines six weighted signals: benchmark performance (25%), pricing efficiency (25%), context window size (15%), model recency (15%), output capacity (10%), and capability versatility (10%). Here's what the scores mean for these two models:
Scores 96/100 (rank #9), placing it in the top 97% of all 290 models tracked.
Scores 84/100 (rank #60), placing it in the top 80% of all 290 models tracked.
GPT-5.2-Codex has a 12-point advantage, which typically translates to noticeably better performance on complex reasoning, code generation, and multi-step tasks.
Grok Code Fast 1 offers 89% better value per quality point. At 1M tokens/day, you'd spend $25.50/month with Grok Code Fast 1 vs $236.25/month with GPT-5.2-Codex — a $210.75 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Higher benchmark score (0/100) indicates stronger performance on coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Faster response time (speed score 0/100) is critical for user-facing chat. Grok Code Fast 1 also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (400K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($1.50/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (96/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input — can analyze screenshots, diagrams, photos, and scanned documents directly
GPT-5.2-Codex clearly outperforms Grok Code Fast 1 with a significant 11.599999999999994-point lead. For most general use cases, GPT-5.2-Codex is the stronger choice. However, Grok Code Fast 1 may still excel in niche scenarios.
Best for Quality
GPT-5.2-Codex
Marginally better benchmark scores; both are excellent
Best for Cost
Grok Code Fast 1
89% lower pricing; better value at scale
Best for Reliability
GPT-5.2-Codex
Higher uptime and faster response speeds
Best for Prototyping
GPT-5.2-Codex
Stronger community support and better developer experience
Best for Production
GPT-5.2-Codex
Wider enterprise adoption and proven at scale
by OpenAI
| Capability | GPT-5.2-Codex | Grok Code Fast 1 |
|---|---|---|
| Vision (Image Input)differs | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
OpenAI
xAI
Grok Code Fast 1 saves you $17.79/month
That's 89% cheaper than GPT-5.2-Codex at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | GPT-5.2-Codex | Grok Code Fast 1 |
|---|---|---|
| Context Window | 400K | 256K |
| Max Output Tokens | 128,000 | 10,000 |
| Open Source | No | No |
| Created | Jan 14, 2026 | Aug 26, 2025 |
GPT-5.2-Codex scores 96/100 (rank #9) compared to Grok Code Fast 1's 84/100 (rank #60), giving it a 12-point advantage. GPT-5.2-Codex is the stronger overall choice, though Grok Code Fast 1 may excel in specific areas like cost efficiency.
GPT-5.2-Codex is ranked #9 and Grok Code Fast 1 is ranked #60 out of 290+ AI models. Rankings use a composite score combining benchmark performance (25%), pricing (25%), context window (15%), recency (15%), output capacity (10%), and versatility (10%). Scores update hourly.
Grok Code Fast 1 is cheaper at $1.50/M output tokens vs GPT-5.2-Codex's $14.00/M output tokens — 9.3x more expensive. Input token pricing: GPT-5.2-Codex at $1.75/M vs Grok Code Fast 1 at $0.20/M.
GPT-5.2-Codex has a larger context window of 400,000 tokens compared to Grok Code Fast 1's 256,000 tokens. A larger context window means the model can process longer documents and conversations.