Gemini 3.8 Flash
Gemini 3.8 Flash is Google's most intelligent Flash model with significant gains from 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.
Cost / 1M tokens
Medium usage$0.825
input
$0.083
cached input
$4.13
output
Context Window
1M
Up to 66K max output
Modalities
text, image, video, file, audio → text
Gemini tokenizer
Quickstart & API
google/gemini-3.8-flashBest for & Strengths
Key Strengths
Recommended Workloads in ChatOSS
- Software engineering
- Coding agents
- Large repositories
Verified Evaluations
Benchmarks & Frontier Comparison
How Gemini 3.8 Flash compares against leading open-weight and proprietary frontier models across independent agentic coding and reasoning suites.
| Benchmark (Metric) | Gemini 3.8 Flash | DeepSeek V4.1 Flash | GLM 5.3 | Kimi K3.1 Pro | Claude Opus 5.5 |
|---|---|---|---|---|---|
| Agentic & Software Engineering | |||||
| ChatOSS Agentic Coding Index (%) | 50.5% | 63.2% | 58.3% | 65% | 74.1% |
| SWE-Bench Verified (%) | 80% | 91.5% | 95.4% | 94.8% | 97% |
| DeepSWE v1.1 (Pass@1 %) | 73.8% | 77% | 69% | 73.5% | 74.2% |
| Vibe Code Bench v1.1 (%) | 78.65% | 87.7% | 78.1% | 88.4% | 90.3% |
| Terminal-Bench 4.0 (%) | 13.13% | 42.3% | 42% | 46.2% | 65.2% |
| Code Migration (%) | 36.55% | 45.6% | 44.2% | 52% | 66.7% |
| Intelligence & Token Economics | |||||
| Artificial Analysis Intelligence Index (0–100) | 40.9 | 39.5 | 44.8 | 55.1 | 57.6 |
| Input Price (/ 1M tokens) | $0.825 | $0.15 | $1.40 | $2.00 | $4.00 |
| Output Price (/ 1M tokens) | $4.13 | $0.60 | $4.40 | $10.00 | $20.00 |
ChatOSS Agentic Coding Index
ChatOSS Benchmark Audit · 4-benchmark composite mean
SWE-Bench Verified
BenchLM (Vals AI) · Terminus 2
DeepSWE v1.1
DeepSWE / Official Audit · Mini-SWE-Agent
Vibe Code Bench v1.1
Vals.ai · OpenHands
Terminal-Bench 4.0
Vals.ai / Artificial Analysis · Terminus 2
Terminal-Bench 2.1
Vals.ai · Terminus 2
Code Migration
Vals.ai · Vals evaluation harness
Artificial Analysis Intelligence Index
Artificial Analysis
Design Arena: ANDROIDNATIVE
Design Arena · Rank #31 (33.4% win)
Design Arena: BLENDER3D
Design Arena · Rank #5 (54.3% win)
Design Arena: FULLSTACK
Design Arena · Rank #11 (48.1% win)
Design Arena: GODOTGAMEDEV
Design Arena · Rank #5 (53% win)
Active Provider Endpoints (7)
Upstream inference providers serving Gemini 3.8 Flash, with per-provider pricing, context limits, quantization, and 24-hour uptime.
| Provider | Input / 1M | Output / 1M | Cache Read / 1M | Context | Max Output | Quantization | Uptime (24h) |
|---|---|---|---|---|---|---|---|
Google AI Studio google-ai-studio/flex | $0.375 | $1.88 | $0.037 | 1M | 66K | — | 100.0% |
Google google-vertex/global/flex | $0.375 | $1.88 | $0.037 | 1M | 66K | — | 53.8% |
Google AI Studio google-ai-studio | $0.75 | $3.75 | $0.075 | 1M | 66K | — | 100.0% |
Google google-vertex/global | $0.75 | $3.75 | $0.075 | 1M | 66K | — | 98.6% |
Google google-vertex/us | $0.825 | $4.13 | $0.083 | 1M | 66K | — | 92.4% |
Google AI Studio google-ai-studio/priority | $1.35 | $6.75 | $0.135 | 1M | 66K | — | 99.9% |
Google google-vertex/global/priority | $1.35 | $6.75 | $0.135 | 1M | 66K | — | 99.3% |
Supported API Parameters
Parameters accepted by this model when called through ChatOSS or OpenRouter.
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