Coding
Directional only- DeepSeek V3
- 38.9
- Grok Code Fast 1
- 70.8
- Weighted basis
- 2 vs 1 rows
- Reading
- Directional only
Model comparison
DeepSeek V3 vs Grok Code Fast 1
Updated July 30, 2026. Public scores include evidence status and uncertainty. They are not guarantees for a specific workload.
DeepSeek V3 has the higher public score estimate, 44.15 versus 37.75, but the 90% score intervals overlap. Treat that as a lead, not a settled winner.
1 results are shared. Category rows based on different benchmark sets are marked directional and do not name a winner.
Which one for your work
Recommendations appear only when a shared evidence basis or an explicit operating constraint supports the call. Secondary and unsupported use cases stay disclosed below the initial list.
Long documents
Prompts that approach the documented context limit
Grok Code Fast 1
Grok Code Fast 1 has the larger documented context window.
Confidence: documented
Chat turn cost
1K fresh input + 500 output tokens
DeepSeek V3
DeepSeek V3 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Show secondary and unsupported calls
Repository review cost
50K fresh input + 3K output tokens
Grok Code Fast 1
Grok Code Fast 1 has the lower estimated token cost for this stated workload. Costs use the listed standard API rates.
Confidence: listed-rates
Coding work
Code generation, repair, and software-engineering tasks
Not enough matched evidence
The category averages use different weighted benchmark sets, so they are directional rather than like-for-like.
Confidence: limited
Agentic work
Tool use, computer use, and multi-step task completion
Not enough matched evidence
No shared weighted benchmark basis supports a winner.
Confidence: limited
Cache-heavy agent loop cost
200K cached + 20K fresh input + 10K output tokens
Not enough matched evidence
The page does not recommend a cost winner because at least one model cannot fit the stated workload in one request. DeepSeek V3 does not fit this workload in one request. Grok Code Fast 1 has no published cached-input rate, so cached tokens use its listed input rate.
Confidence: rate-fallback
What is actually comparable
Shared results can support a head-to-head reading. Results present for only one model describe coverage, not superiority.
5 DeepSeek V3 only
1 Shared
- Shared results
- 1
- DeepSeek V3 only
- 5
- Grok Code Fast 1 only
- 0
- Like-for-like categories
- 0 / 8
1 category uses different evidence sets. Those rows remain visible for coverage context but do not name a winner.
Category results, on a stated basis
Each row states whether both averages use the same weighted benchmark set. Directional and not-comparable rows remain visible, but they never receive a winner in this template.
Agentic
Not comparable- DeepSeek V3
- Not measured
- Grok Code Fast 1
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Reasoning
Not comparable- DeepSeek V3
- Not measured
- Grok Code Fast 1
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Knowledge
Not comparable- DeepSeek V3
- 72.7
- Grok Code Fast 1
- Not measured
- Weighted basis
- 2 vs 0 rows
- Reading
- Not comparable
Math
Not comparable- DeepSeek V3
- 1.7
- Grok Code Fast 1
- Not measured
- Weighted basis
- 1 vs 0 rows
- Reading
- Not comparable
Multilingual
Not comparable- DeepSeek V3
- Not measured
- Grok Code Fast 1
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Multimodal
Not comparable- DeepSeek V3
- Not measured
- Grok Code Fast 1
- Not measured
- Weighted basis
- 0 vs 0 rows
- Reading
- Not comparable
Instruction following
Not comparable- DeepSeek V3
- 86.1
- Grok Code Fast 1
- Not measured
- Weighted basis
- 1 vs 0 rows
- Reading
- Not comparable
| Category | DeepSeek V3 | Grok Code Fast 1 | Weighted basis | Reading |
|---|---|---|---|---|
| Coding | 38.9 | 70.8 | Directional only2 vs 1 rows | Directional only |
| Agentic | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Reasoning | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Knowledge | 72.7 | Not measured | Not comparable2 vs 0 rows | Not comparable |
| Math | 1.7 | Not measured | Not comparable1 vs 0 rows | Not comparable |
| Multilingual | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Multimodal | Not measured | Not measured | Not comparable0 vs 0 rows | Not comparable |
| Instruction following | 86.1 | Not measured | Not comparable1 vs 0 rows | Not comparable |
Shape of the matched evidence
Only shared public evidence is shown. Sparse evidence stays a ruled list rather than being closed into a radar shape.
Too few matched category axes support a radar. The ruled list below shows only shared benchmark results; positions use each benchmark’s normalized display scale when available.
SWE-bench Verified
Coding
DeepSeek V3: 42%Grok Code Fast 1: 70.8%Normalized gap 28.8DeepSeek V3 source Grok Code Fast 1 source
What each workload costs
Three fixed token mixes turn per-token rates into comparable decisions. Each scenario states context fit and whether cached input had to fall back to the published list-input rate.
Chat turn
1K fresh input + 500 output tokens
- DeepSeek V3
- $0.00082
- Fits in one request
- Grok Code Fast 1
- $0.00095
- Fits in one request
DeepSeek V3 has the lower modeled cost
Costs use the listed standard API rates.
Repository review
50K fresh input + 3K output tokens
- DeepSeek V3
- $0.0168
- Fits in one request
- Grok Code Fast 1
- $0.0145
- Fits in one request
Grok Code Fast 1 has the lower modeled cost
Costs use the listed standard API rates.
Cache-heavy agent loop
200K cached + 20K fresh input + 10K output tokens
- DeepSeek V3
- $0.0304
- Does not fit in one request
- Grok Code Fast 1
- $0.059
- Fits in one request
- Cached input priced at the published list-input rate
DeepSeek V3 does not fit this workload in one request. Grok Code Fast 1 has no published cached-input rate, so cached tokens use its listed input rate.
Specification differences
Sourced differences are shown directly. Missing facts stay explicit instead of being inferred from a model name or family.
SpecificationDeepSeek V3Grok Code Fast 1
Context window
Maximum documented context; output-token limits may be lower.
DeepSeek V3
128K
Grok Code Fast 1
256K
API model ID
DeepSeek V3
Not sourced
Grok Code Fast 1
Not sourced
Cached-input rate
A missing cached-input rate falls back to the listed input rate only in the stated workload estimate.
DeepSeek V3
$0.07 per 1M cached input tokens
Grok Code Fast 1
Not published
Documented inputs
DeepSeek V3
Not sourced
Grok Code Fast 1
Not sourced
Documented outputs
DeepSeek V3
Not sourced
Grok Code Fast 1
Not sourced
Provider availability
DeepSeek V3
Not sourced
Grok Code Fast 1
Not sourced
Reasoning profile
DeepSeek V3
Non-Reasoning
Grok Code Fast 1
Non-Reasoning
Weight access
DeepSeek V3
Open Weight
Grok Code Fast 1
Proprietary
License
DeepSeek V3
Open Weight
Grok Code Fast 1
Proprietary
Release date
DeepSeek V3
2024-12-26
Grok Code Fast 1
2025-08-28
If you already use one of these models
- Deployment change
- The models list different providers, so authentication, endpoint behavior, limits, and feature support may change.
- Quality signal
- DeepSeek V3 has the higher public score estimate, 44.15 versus 37.75, but the 90% score intervals overlap.
- Workload cost
- Repository review: $0.0168 vs $0.0145. Cache-heavy agent loop: $0.0304 vs $0.059.
- Context tradeoff
- Grok Code Fast 1 has the larger documented window (256K).
Run the same representative tasks against both endpoints before changing production traffic.
Self-host vs API cost
Estimates at 50,000 req/day · 1000 tokens/req average.
DeepSeek V3
API / mo$1,028
Self-host / mo$18,221
Break-even1.2B/day
Grok Code Fast 1
API / mo$1,275
Self-host / moNot listed
Break-even—
Proprietary model — self-hosting not applicable.
Benchmark evidence
The full public result ledger is available for audit without forcing a wide desktop table onto a phone.
Frequently asked questions
Which is better, DeepSeek V3 or Grok Code Fast 1?
DeepSeek V3 has the higher public score estimate, 44.15 versus 37.75, but the 90% score intervals overlap. The higher estimate is not a decisive winner because the uncertainty ranges overlap.
Which is better for coding, DeepSeek V3 or Grok Code Fast 1?
The current coding averages use different weighted benchmark sets, so BenchLM does not name a winner from them. Read the shared benchmark rows directly and test the models on the same task set.
Which is better for agentic tasks, DeepSeek V3 or Grok Code Fast 1?
The published evidence does not provide a shared weighted agentic tasks basis for both models, so BenchLM does not name a agentic tasks winner.
Which costs less, DeepSeek V3 or Grok Code Fast 1?
For the stated presets, chat costs $0.00082 on DeepSeek V3 and $0.00095 on Grok Code Fast 1; repository review costs $0.0168 and $0.0145; the cache-heavy agent loop costs $0.0304 and $0.059. DeepSeek V3 does not fit this workload in one request. Grok Code Fast 1 has no published cached-input rate, so cached tokens use its listed input rate.
Which has the larger context window, DeepSeek V3 or Grok Code Fast 1?
Grok Code Fast 1 has the larger documented context window: 256K, compared with 128K.
Related comparisons
Last updated July 30, 2026
Watch DeepSeek V3 vs Grok Code Fast 1
One weekly email when material rank, price, or benchmark evidence changes make this matchup worth revisiting.
Read a sample issueJoin 2,000+ readers.